CA1077988A - Cross-country ski exerciser - Google Patents
Cross-country ski exerciserInfo
- Publication number
- CA1077988A CA1077988A CA267,552A CA267552A CA1077988A CA 1077988 A CA1077988 A CA 1077988A CA 267552 A CA267552 A CA 267552A CA 1077988 A CA1077988 A CA 1077988A
- Authority
- CA
- Canada
- Prior art keywords
- frame
- ski
- flywheel
- drive rollers
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/18—Training appliances or apparatus for special sports for skiing
- A63B69/182—Training appliances or apparatus for special sports for skiing for cross-country-skiing
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/0002—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms
- A63B22/001—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms by simultaneously exercising arms and legs, e.g. diagonally in anti-phase
- A63B22/0012—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms by simultaneously exercising arms and legs, e.g. diagonally in anti-phase the exercises for arms and legs being functionally independent
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/20—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising
- A63B22/201—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising for moving a support element in reciprocating translation, i.e. for sliding back and forth on a guide track
- A63B22/203—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising for moving a support element in reciprocating translation, i.e. for sliding back and forth on a guide track in a horizontal plane
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/0025—Particular aspects relating to the orientation of movement paths of the limbs relative to the body; Relative relationship between the movements of the limbs
- A63B2022/0038—One foot moving independently from the other, i.e. there is no link between the movements of the feet
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/0025—Particular aspects relating to the orientation of movement paths of the limbs relative to the body; Relative relationship between the movements of the limbs
- A63B2022/0041—Particular aspects relating to the orientation of movement paths of the limbs relative to the body; Relative relationship between the movements of the limbs one hand moving independently from the other hand, i.e. there is no link between the movements of the hands
Abstract
ABSTRACT OF THE DISCLOSURE
A ski exerciser used for simulating the motions required in cross-country skiing on which a skier can practice and exercise under conditions substantially similar conditions to those encountered during cross-country skiing.
A ski exerciser used for simulating the motions required in cross-country skiing on which a skier can practice and exercise under conditions substantially similar conditions to those encountered during cross-country skiing.
Description
~ O 7~9 ~
The present invention relates to exercisers and simulators used for simulating the motions used during cross-country skiing.
In the prior art there are quite a large number of downhill skiing simulators or exercisers that are used by skiers during the off-season for get~ing in shape and also for practicing skiing techniques.
For example, United States Patent No. 3,711,089, Issued January, 1973 to Reinhard discloses a ski simulator that used a belt mounted over rollers, and in ~igure 5 through 9 of that patent, rollers which are not powered are shown.
However, the action is different from that shown in the present device.
The p~sent device does use a flywheel, and flywheels are shown in exercising devices, for example, in United States Patent No. 2,274,081, Issued June, 1941 to Mautin where a fly-wheel is used to store energy, and also in Patent No.
3,554,541, Issued January, 1971 to ~eaman, a flywheel is disclosed.
United States Patent No. 3,941,377, Issued March, 1976 to Lie also shows a simulator ski exerciser.
The present invention relates to a simulator device or exerciser that simulates the motions encountered in cross-country skiing and permits a skier to use the device for exer-cising under simulated cross-country skiing conditions. The device includes a framework that is large enough to accommodate a person wearing cross-country skis, and the skis in turn are supported on individual drive means that have one-way drive means so that they will free wheel in one direction and will ~07 79 ~ ~
drive an energy storage device when moved in the opposite direction. In the form disclosed the energy storage device comprises a flywheel that has a brake band engaging its sur-face to dissipate energy as heat. The one-way drive means comprise one-way clutches, as shown driving a shaft by motion of the skis. In cross-country skiing, as opposed to downhill skiing, the skis are used for propulsion over the ground, and resistance to rearward movement of each leg permits the skier to move the other ski forward. Thus, in the device shown, on the backward thrust of each leg an individual roller driven by that ski will drive the energy storage unit in accordance with the amount of force provided by the person using the exerciser.
Then, when that leg is moved forward, the roller will free wheel with little or no drag, just as is done when a cross-country skier moves a ski forward.
Restraint means are provided for restraining the movement of the skier relative to the frame so that the exer-ciser comprises an in-place exercising unit. In addition, for use with the exerciser, cross-country ski poles ha~ng rotatable discs or wheels at the lower end are used, and the discs are frictionally mounted to simulate, also, resistance of the snow encountered during skiing~
Sui~able supports are provided on the framework for stability, and if desired, a speedometer can be driven to indicate the speed with which the skier is moving. The energy absorbing device comprising a brake member and a flywheel in this form of the invention, can be adjusted to regulate the force required during operation so that different conditions can be simulated, such as, for example, simulating skiing on level, and simulating skiing going up a hill.
The device is manufactured out of standar~ existing mechanical components arranged in such a way that the simula-tion of cross-country skiing is accomplished easily, and fairly exactly. The restraint for the skier is shown as a forward restraint again~ which the skier leans, but it also can be a restraint such as a belt which was fastened to a wall or other support to the rear of the skier.
Reference is made to the drawings, wherein:
Figure 1 is a side elevational view of a cross-country simulator made according to the present invention;
Figure 2 is a top plan view of the device of Figure 1 taken as on line 2--2 of Figure l;
Figure 3 is an end view taken as on line 3--3 of Figure l;
Figure 4 is a sectional view taken as on line 4--4 in Figure l;
Figure 5 is a sectional view taken as on line 5--5 of Figure 2;
Figure 6 is a sectional view taken as on line 6--6 in Figure 2;
Figure 7 is a fragmentary side view of the lower portion of the ski pole illustrated in Figure l; and Figure 8 is a sectional view taken as on line 8--8 of Figure 7.
Referring to the drawings, the ski exerciser illus-trated generally at 10 includes a main frame 11. The frame 11 is made up of `iateral side members 12,12 which extend in a fore and aft direction, and are spaced apart a sufficient distance 1al77988 to approxima~e the space required for a normal skiing path for a cross-country skier. The frame members 12,12 are held to-gether with a front cross piece 13, and a rear cross piece 14.
A longitudinally extending central support assembly 15 may also be provided and the assembly 15 connects between the cross pieces 13 and 14.
There are lateral supports 12A on opposite sides of the frame to provide surfaces for supporting the ends of the ski poles used, as will be explained.
The center assembly 15 is made so that it leaves laterally spaced tracks on opposite sides thereof and be~-een the center member and the side frame members 12,12.
As shown, the front and rear supports 13 and 1~ are both recessed or notched, as perhaps best seen in Figure 3, and these recesses indicated in Figures 3 and 4 at 13A, 13B
and at 14A and 14B are used for rotatably mounting front idler rollers 16A and 16B, and rear idler rollers 17A and 17B.
These rollers 16 and 17 are idlers that may be covered with suitable elastomeric or soft plastic matffial that gives a reasonably high coefficient of friction, and re-duces noise of skis that might be run over them.
In approximately the center of the frame in a longitudinal direction, there is a cross shaft 20 rotatably mounted between the side members 12,12. The shaft 20 may be supported with respect to the center assembly 15, but is below the top plane thereof. This cross shaft 20 has a fly~heel member 21 drivably mounted thereon with a suitable key, and on opposite sides of the center member 15, there are drive roller assemblies 22A and 22B, respectively, mounted to the shaft 20.
The roller assemblies 22 are connected to the shaft 20 through one-way clutches which are illustrated only schematically at 23A amd 23B. The one-way clutches can be any desired type of on~e-way clutch which permits the rollers to drive the shaft 20, individually, but only when the rollers are driven in one direction. As shown, when the one-way clutches are installed so thatwhen the rollers are driven in a counter-clockwise direction as viewed in Figures 1, 5 and 6, the individual rollers 22A and 22B will tend to drive the shaft 20 in such counter-clockwise direction. However, when the rollers are moved in clockwise direction as viewed in these figures, the rollers will free wheel and not drive the shaft. Thus, the one-way clutches 23A and 23B provide free wheeling action when the rollers are moved clockwise. Other suitable one-way drive means can be utilized if desired, but the commercially available clutches make a convenient assembly.
The upper part of flywheel 21 extends upwardly through a provided opening 24 in the center support member 15, and it should be noted that the upper edges of the rollers 22A and 22B
are generally along the same plane as the corresponding rollers 16A and 17A, and 16B and 17B, respectivelyO This can be perhaps best seen in Figure 5. The rollers 22A and 22B may be covered with suitable noise reducing, high friction elastomeric material, or other suitable material.
The center support member 15 also is used for mounting an upright pedestal illustrated generally at 25~ The pedestal 25 comprises a box-like structure having upright side support members, and fore and aft members enclosing it. This pedestal is used to provide a restraint for the skier who is illustrated ~ o779~8 generally at 26. The skier restraint, in this form of the invention, is th~gh a vertically adjustable foam cushion pad 27 that is adjustably mounted to the rear wall of the upright membe:r 25 through the use of the slots in the walls of the up-right member and in a bracket 28 that is attached to the foam pad 27. Suitable adjustment screws 32 can be provided for adjusting the bracket 28 relative to the pedestal 25.
The pedestal 25 is hollow, as shown in Figure 6, and on the interior of the pedestal 25 a hand screw indicated at 33 is mounted at the top, and is threadably mounted through a nut 34 that is attached to the top of the pedestal. The hand screw in turn controls a cable 35 acting through a spring 36 which in turn is connected to another cable 37 that is attached to a leg 38A of a bell crank 38 that is pivotally mounted to a block 39 at the lower portion of the pedestal 25. The bell crank 38 has a sec~ leg 38B that has one end of a flexible brake band 42 pivotally connected thereto. The brake band 42 passes around the periphery of the flywheel 21, as shown perhaps best in Figure 6, and is anchored back at a fixed anchor point comprising an ear 43 that is attached to the pedestal 25 below the center member 15.
It can be seen that any force exerted through the spring 36 on the bell crank 38 will tend to tighten the flexible brake band 42 against the flywheel and tend to increase the friction drag on the flywheel.
Additionally, a gear unit indicated generally at 44, and of suitable design, can be mounted to be driven by a gear on the shaft 20 to drive a speedometer cable 45 which drives a speedometer-odometer indicator 46 calibrated to show speed of the movement of the skier, as well as the total simulated miles that have been skied.
When the exerciser is to be used, the skier 26 will put on a pair of cross-country s~is indicated at 46A and 46B.
Suitable bindings 47 will be used, and these will be the normal cross-country bindings. Also, the skier can use boots 48 of normal design. The skier will then place the skis in position so that ski 46A is resting on rollers 16A, 22A, and 17A, and ski 46B is resting on rollers 16B~ 17B and 22B.
The skier then will use a pair of ski poles for stability. These ski poles are illustrated generally at 50, and are supported by lateE~ supports 12A. The skier will rest against the foam block 27, or other suitable restraint that might be p~ovided, such as a belt anchored to the wall of a building in which the simulator can be used, and will just commencing moving his feet in much the same manner as is done in skiing. It can be seen that when the ski is thrust to the rear, for example, ski 46A, which has been moved rearwardly in Figure 1, the ski bottom will engage the surface of the roller 22A and because the roller will then tend to be driven in counter-clockwise direction, the one-way clutch 23~ will drive the shaft 20c This will tend to rotate flywheel 21, storing the energy that is expended by the rearward movement of the skier's leg, and any movement of course will be resisted by the friction between the brake band 42 and the outer surface of the flywheel. Then, the skier will move the opposite or left leg rearwardly, while the right leg is moved forwardly. The movement forwardly will cause the roller 22A to free wheel, much as is done during skiing operation, while the left leg will tend ~ o77988 to drive roller 22B in counter-clockwise direction thereby acting through the one-way clutch 23B to drive the shaft 20 further. The free wheeling action will require that the skier move the legs to rotate rollers 22 faster than shaft 20 before the rollers will drive the shaft.
The operation is merely continued, and the amount of force or energy expended tending to rotate the flywheel can be changed by adjusting the hand wheel 33 to increase the drag (or decrease the drag) of the brake band 42 through the operation of the bell crank 38.
When skiing cross-country, ski poles are used for stability and also for added thrust. In the present device, the simulation of the use of the ski poles is desired, and in the form shown, the ski poles 50 a~ ~ade in a special way. The ski poles have handles 52 of conventional design on the ski pole shafts 53, that are of the desired length for the user, and at the lower end of the shaft 53, a notched or toothed disc 54 is rotatably mounted onto a bolt 55 that passes through the shaft, and through a support disc 56, as well as through a friction disc 57. By tightening the bolt 55 through the use of a wing nut 55A, the amount of friction resisting rotation of the disc or wheel 54 can be changed. The disc 54 will be ad-justed so that the frict~nal force will simulate the resistance encountered in normal snow conditions, and can ~ changed if desired to closely approximate the forces encountered during cross-country skiing. The disc 5~ can be of any suitable material. The supports 12A are generally covered with carpeting to provide a suitable poling surface.
The platform 12A on each side of the frame can be eliminated if the ski poles are lengthened sufficiently so that they wi~l run on the floor 51.
The exerciser provides means for exercising both arms and legs, when used with the provided poles. Complete exercise is achieved, and because it closely simulates actual conditions cross-country racers can use it to stay in shape in period of no snow.
The flywheel can be eliminated if a suitable friction -device or other energy dissipation device is provided instead of the flywheel. ~or satisfactory operation there should be means to exert a desired amount of resistance for simulated skiing when the skis are moved in one direction.
_g_ .
The present invention relates to exercisers and simulators used for simulating the motions used during cross-country skiing.
In the prior art there are quite a large number of downhill skiing simulators or exercisers that are used by skiers during the off-season for get~ing in shape and also for practicing skiing techniques.
For example, United States Patent No. 3,711,089, Issued January, 1973 to Reinhard discloses a ski simulator that used a belt mounted over rollers, and in ~igure 5 through 9 of that patent, rollers which are not powered are shown.
However, the action is different from that shown in the present device.
The p~sent device does use a flywheel, and flywheels are shown in exercising devices, for example, in United States Patent No. 2,274,081, Issued June, 1941 to Mautin where a fly-wheel is used to store energy, and also in Patent No.
3,554,541, Issued January, 1971 to ~eaman, a flywheel is disclosed.
United States Patent No. 3,941,377, Issued March, 1976 to Lie also shows a simulator ski exerciser.
The present invention relates to a simulator device or exerciser that simulates the motions encountered in cross-country skiing and permits a skier to use the device for exer-cising under simulated cross-country skiing conditions. The device includes a framework that is large enough to accommodate a person wearing cross-country skis, and the skis in turn are supported on individual drive means that have one-way drive means so that they will free wheel in one direction and will ~07 79 ~ ~
drive an energy storage device when moved in the opposite direction. In the form disclosed the energy storage device comprises a flywheel that has a brake band engaging its sur-face to dissipate energy as heat. The one-way drive means comprise one-way clutches, as shown driving a shaft by motion of the skis. In cross-country skiing, as opposed to downhill skiing, the skis are used for propulsion over the ground, and resistance to rearward movement of each leg permits the skier to move the other ski forward. Thus, in the device shown, on the backward thrust of each leg an individual roller driven by that ski will drive the energy storage unit in accordance with the amount of force provided by the person using the exerciser.
Then, when that leg is moved forward, the roller will free wheel with little or no drag, just as is done when a cross-country skier moves a ski forward.
Restraint means are provided for restraining the movement of the skier relative to the frame so that the exer-ciser comprises an in-place exercising unit. In addition, for use with the exerciser, cross-country ski poles ha~ng rotatable discs or wheels at the lower end are used, and the discs are frictionally mounted to simulate, also, resistance of the snow encountered during skiing~
Sui~able supports are provided on the framework for stability, and if desired, a speedometer can be driven to indicate the speed with which the skier is moving. The energy absorbing device comprising a brake member and a flywheel in this form of the invention, can be adjusted to regulate the force required during operation so that different conditions can be simulated, such as, for example, simulating skiing on level, and simulating skiing going up a hill.
The device is manufactured out of standar~ existing mechanical components arranged in such a way that the simula-tion of cross-country skiing is accomplished easily, and fairly exactly. The restraint for the skier is shown as a forward restraint again~ which the skier leans, but it also can be a restraint such as a belt which was fastened to a wall or other support to the rear of the skier.
Reference is made to the drawings, wherein:
Figure 1 is a side elevational view of a cross-country simulator made according to the present invention;
Figure 2 is a top plan view of the device of Figure 1 taken as on line 2--2 of Figure l;
Figure 3 is an end view taken as on line 3--3 of Figure l;
Figure 4 is a sectional view taken as on line 4--4 in Figure l;
Figure 5 is a sectional view taken as on line 5--5 of Figure 2;
Figure 6 is a sectional view taken as on line 6--6 in Figure 2;
Figure 7 is a fragmentary side view of the lower portion of the ski pole illustrated in Figure l; and Figure 8 is a sectional view taken as on line 8--8 of Figure 7.
Referring to the drawings, the ski exerciser illus-trated generally at 10 includes a main frame 11. The frame 11 is made up of `iateral side members 12,12 which extend in a fore and aft direction, and are spaced apart a sufficient distance 1al77988 to approxima~e the space required for a normal skiing path for a cross-country skier. The frame members 12,12 are held to-gether with a front cross piece 13, and a rear cross piece 14.
A longitudinally extending central support assembly 15 may also be provided and the assembly 15 connects between the cross pieces 13 and 14.
There are lateral supports 12A on opposite sides of the frame to provide surfaces for supporting the ends of the ski poles used, as will be explained.
The center assembly 15 is made so that it leaves laterally spaced tracks on opposite sides thereof and be~-een the center member and the side frame members 12,12.
As shown, the front and rear supports 13 and 1~ are both recessed or notched, as perhaps best seen in Figure 3, and these recesses indicated in Figures 3 and 4 at 13A, 13B
and at 14A and 14B are used for rotatably mounting front idler rollers 16A and 16B, and rear idler rollers 17A and 17B.
These rollers 16 and 17 are idlers that may be covered with suitable elastomeric or soft plastic matffial that gives a reasonably high coefficient of friction, and re-duces noise of skis that might be run over them.
In approximately the center of the frame in a longitudinal direction, there is a cross shaft 20 rotatably mounted between the side members 12,12. The shaft 20 may be supported with respect to the center assembly 15, but is below the top plane thereof. This cross shaft 20 has a fly~heel member 21 drivably mounted thereon with a suitable key, and on opposite sides of the center member 15, there are drive roller assemblies 22A and 22B, respectively, mounted to the shaft 20.
The roller assemblies 22 are connected to the shaft 20 through one-way clutches which are illustrated only schematically at 23A amd 23B. The one-way clutches can be any desired type of on~e-way clutch which permits the rollers to drive the shaft 20, individually, but only when the rollers are driven in one direction. As shown, when the one-way clutches are installed so thatwhen the rollers are driven in a counter-clockwise direction as viewed in Figures 1, 5 and 6, the individual rollers 22A and 22B will tend to drive the shaft 20 in such counter-clockwise direction. However, when the rollers are moved in clockwise direction as viewed in these figures, the rollers will free wheel and not drive the shaft. Thus, the one-way clutches 23A and 23B provide free wheeling action when the rollers are moved clockwise. Other suitable one-way drive means can be utilized if desired, but the commercially available clutches make a convenient assembly.
The upper part of flywheel 21 extends upwardly through a provided opening 24 in the center support member 15, and it should be noted that the upper edges of the rollers 22A and 22B
are generally along the same plane as the corresponding rollers 16A and 17A, and 16B and 17B, respectivelyO This can be perhaps best seen in Figure 5. The rollers 22A and 22B may be covered with suitable noise reducing, high friction elastomeric material, or other suitable material.
The center support member 15 also is used for mounting an upright pedestal illustrated generally at 25~ The pedestal 25 comprises a box-like structure having upright side support members, and fore and aft members enclosing it. This pedestal is used to provide a restraint for the skier who is illustrated ~ o779~8 generally at 26. The skier restraint, in this form of the invention, is th~gh a vertically adjustable foam cushion pad 27 that is adjustably mounted to the rear wall of the upright membe:r 25 through the use of the slots in the walls of the up-right member and in a bracket 28 that is attached to the foam pad 27. Suitable adjustment screws 32 can be provided for adjusting the bracket 28 relative to the pedestal 25.
The pedestal 25 is hollow, as shown in Figure 6, and on the interior of the pedestal 25 a hand screw indicated at 33 is mounted at the top, and is threadably mounted through a nut 34 that is attached to the top of the pedestal. The hand screw in turn controls a cable 35 acting through a spring 36 which in turn is connected to another cable 37 that is attached to a leg 38A of a bell crank 38 that is pivotally mounted to a block 39 at the lower portion of the pedestal 25. The bell crank 38 has a sec~ leg 38B that has one end of a flexible brake band 42 pivotally connected thereto. The brake band 42 passes around the periphery of the flywheel 21, as shown perhaps best in Figure 6, and is anchored back at a fixed anchor point comprising an ear 43 that is attached to the pedestal 25 below the center member 15.
It can be seen that any force exerted through the spring 36 on the bell crank 38 will tend to tighten the flexible brake band 42 against the flywheel and tend to increase the friction drag on the flywheel.
Additionally, a gear unit indicated generally at 44, and of suitable design, can be mounted to be driven by a gear on the shaft 20 to drive a speedometer cable 45 which drives a speedometer-odometer indicator 46 calibrated to show speed of the movement of the skier, as well as the total simulated miles that have been skied.
When the exerciser is to be used, the skier 26 will put on a pair of cross-country s~is indicated at 46A and 46B.
Suitable bindings 47 will be used, and these will be the normal cross-country bindings. Also, the skier can use boots 48 of normal design. The skier will then place the skis in position so that ski 46A is resting on rollers 16A, 22A, and 17A, and ski 46B is resting on rollers 16B~ 17B and 22B.
The skier then will use a pair of ski poles for stability. These ski poles are illustrated generally at 50, and are supported by lateE~ supports 12A. The skier will rest against the foam block 27, or other suitable restraint that might be p~ovided, such as a belt anchored to the wall of a building in which the simulator can be used, and will just commencing moving his feet in much the same manner as is done in skiing. It can be seen that when the ski is thrust to the rear, for example, ski 46A, which has been moved rearwardly in Figure 1, the ski bottom will engage the surface of the roller 22A and because the roller will then tend to be driven in counter-clockwise direction, the one-way clutch 23~ will drive the shaft 20c This will tend to rotate flywheel 21, storing the energy that is expended by the rearward movement of the skier's leg, and any movement of course will be resisted by the friction between the brake band 42 and the outer surface of the flywheel. Then, the skier will move the opposite or left leg rearwardly, while the right leg is moved forwardly. The movement forwardly will cause the roller 22A to free wheel, much as is done during skiing operation, while the left leg will tend ~ o77988 to drive roller 22B in counter-clockwise direction thereby acting through the one-way clutch 23B to drive the shaft 20 further. The free wheeling action will require that the skier move the legs to rotate rollers 22 faster than shaft 20 before the rollers will drive the shaft.
The operation is merely continued, and the amount of force or energy expended tending to rotate the flywheel can be changed by adjusting the hand wheel 33 to increase the drag (or decrease the drag) of the brake band 42 through the operation of the bell crank 38.
When skiing cross-country, ski poles are used for stability and also for added thrust. In the present device, the simulation of the use of the ski poles is desired, and in the form shown, the ski poles 50 a~ ~ade in a special way. The ski poles have handles 52 of conventional design on the ski pole shafts 53, that are of the desired length for the user, and at the lower end of the shaft 53, a notched or toothed disc 54 is rotatably mounted onto a bolt 55 that passes through the shaft, and through a support disc 56, as well as through a friction disc 57. By tightening the bolt 55 through the use of a wing nut 55A, the amount of friction resisting rotation of the disc or wheel 54 can be changed. The disc 54 will be ad-justed so that the frict~nal force will simulate the resistance encountered in normal snow conditions, and can ~ changed if desired to closely approximate the forces encountered during cross-country skiing. The disc 5~ can be of any suitable material. The supports 12A are generally covered with carpeting to provide a suitable poling surface.
The platform 12A on each side of the frame can be eliminated if the ski poles are lengthened sufficiently so that they wi~l run on the floor 51.
The exerciser provides means for exercising both arms and legs, when used with the provided poles. Complete exercise is achieved, and because it closely simulates actual conditions cross-country racers can use it to stay in shape in period of no snow.
The flywheel can be eliminated if a suitable friction -device or other energy dissipation device is provided instead of the flywheel. ~or satisfactory operation there should be means to exert a desired amount of resistance for simulated skiing when the skis are moved in one direction.
_g_ .
Claims (13)
1. An exerciser device for simulating movement of cross-country skiing comprising a frame member having first and second ends, a support means on opposite sides of said frame positioned to form paths to individually support each one of a pair of elongated members such as skis for movement adjacent opposite longitudinal sides of said frame, one elongated member in each of a pair of movement paths, said support means in each path including a separate rotatable drive roller, each of said drive rollers being rotated upon movement of an elongated member engaging the respective drive roller, means forming a rotatable flywheel for storing energy developed by driving of said drive rollers r means to drivably connect the drive rollers in each path to said means forming a flywheel including one-way clutch means, said one-way clutch means being effective to disengage driving connection between each of said drive rollers and said means forming a fly-wheel when said drive rollers are rotated in one direction of rotation, and to effect driving connection between said drive rollers and the flywheel means when said drive rollers are rotated in the other direction at a speed greater than the speed necessary to overtake and drive said means forming a flywheel.
2. The combination of Claim 1 and means to restrain a person moving said ski means when in position on said frame.
3. The combination as specified in Claim 2 wherein said means to restrain comprises an upright pedestal mounted at the forward portions of said frame, and means to engage a portion of a skier's body to restrain forward movement.
4. The combination as specified in Claim 1 and friction brake means for frictionally restraining motion of said means forming a flywheel.
5. The combination as specified in Claim 1 wherein said frame includes generally horizontal support surfaces adjacent said means to support each of said ski means, said support surfaces being positioned to receive elongated pole members held by a skier using said frame, said pole members having rotatable wheels at the lower end thereof to engage said support surfaces.
6. The combination as specified in Claim 5 and friction drive means between said rotatable wheels and said pole members for adjusting the frictional force required to rotate said wheel members relative to said pole members.
7. The combination as specified in Claim 4 and means to adjust the frictional force said friction brake means exerts on said means forming a flywheel.
8. The combination as specified in Claim 7 wherein said means to adjust the frictional force comprises a bell crank member pivotally mounted to said frame, said bell crank member having a first arm, means to mount one end of said friction band on said first arm, means to mount the other end of said friction band to said frame, said bell crank having a second arm, and means to adjustably exert a resilient force on said second arm tending to pivot said bell crank means to tighten said friction band against said flywheel.
9. The combination as specified in Claim 8 and speedometer means drivably connected to said drive rollers.
10. The combination as specified in Claim 1 wherein said flywheel means forming a flywheel comprises a flywheel rotatably mounted on said frame, said flywheel and said drive rollers being mounted on a common shaft, said one-way clutch means drivably connecting said drive rollers to said common shaft when said drive rollers are turned in a first direction at a speed greater than the rotation of said shaft in that direction.
11. An exerciser device for simulating cross-country skiing comprising a frame member having first and second ends, a plurality of rollers on said frame positioned to individually support each of a pair of ski means along adjacent opposite sides of said frame, one ski means in each of a pair of first and second roller paths, at least one of said rollers in each of said roller paths comprising a drive roller, each of said drive rollers being rotated upon movement of a ski means engaging said drive roller, energy storage means rotatably mounted on said frame for storing energy developed by driving said drive rollers, means to drivably connect the drive rollers in each path to said energy storage means including one-way clutch means, said one-way clutch means being effective to disengage driving connection between each of said drive rollers and said energy storage means when the respective drive rollers are rotated in one direction of rotation, and to effect driving connection between the respective drive rollers and the energy storage means when said drive rollers are rotated in the other direction at a speed greater than the speed necessary to overtake the rotation of the energy storage means.
12. The combination of Claim 11 wherein said rollers of the energy storage means for each ski form a separated path from the rollers for the other ski, means on said frame forming a divider between said separated paths, an upright pedestal mounted on said divider means extending upwardly from said frame in a position ahead of the position assumed by a skier using said exerciser, and barrier means mounted on said pedestal and engaging portions of a body of a user adjacent the hip area of the user to restrain the user from forward movement only during use of said exerciser.
13. An exerciser for simulating cross-country skiing comprising a frame having first and second ends, support means on said frame and within the peripheral dimensions thereof for supporting a pair of ski-like members, said support means com-prising first and second freely rotatable roller means for each of said ski-like members rotatably mounted adjacent the first and second ends of said frame, respectively, said first and second roller means for each of said ski-like members being spaced apart in longitudinal direction but simultaneously engageable by ski-like members worn by a user of the exerciser, and separate drive roller means for each of said ski-like mem-bers at center portions of said frame and positioned between the respective first and second freely rotating rotatable roller means, said separate drive roller means for each of said ski-like members being substantially midway between the first and second freely rotating rotatable roller means for the respective skis, flywheel means rotatably mounted with respect to said frame for storing energy expended by an exerciser, one way clutch means drivably connecting each of said separate drive roller means to said flywheel means where-by movement of each of a pair of ski-like members supported on its respective roller means will cause the respective drive roller means to rotate said flywheel means in one direction and each of said drive roller means being free wheeling in the opposite direction of rotation from said one direction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/640,496 US4023795A (en) | 1975-12-15 | 1975-12-15 | Cross-country ski exerciser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1077988A true CA1077988A (en) | 1980-05-20 |
Family
ID=24568497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA267,552A Expired CA1077988A (en) | 1975-12-15 | 1976-12-09 | Cross-country ski exerciser |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4023795A (en) |
| CA (1) | CA1077988A (en) |
| DE (1) | DE2656893A1 (en) |
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- 1975-12-15 US US05/640,496 patent/US4023795A/en not_active Expired - Lifetime
-
1976
- 1976-12-09 CA CA267,552A patent/CA1077988A/en not_active Expired
- 1976-12-13 DE DE19762656893 patent/DE2656893A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| US4023795A (en) | 1977-05-17 |
| DE2656893A1 (en) | 1977-06-23 |
| DE2656893C2 (en) | 1989-03-02 |
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| Date | Code | Title | Description |
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| MKEX | Expiry |