US20080310910A1 - Scaffold securement device - Google Patents
Scaffold securement device Download PDFInfo
- Publication number
- US20080310910A1 US20080310910A1 US12/157,409 US15740908A US2008310910A1 US 20080310910 A1 US20080310910 A1 US 20080310910A1 US 15740908 A US15740908 A US 15740908A US 2008310910 A1 US2008310910 A1 US 2008310910A1
- Authority
- US
- United States
- Prior art keywords
- scaffolding
- pin
- trusses
- sleeve
- locking
- 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.)
- Abandoned
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
- E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
- E04G7/303—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect
- E04G7/305—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect without tying means for connecting the bars or members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/18—Scaffolds primarily resting on the ground adjustable in height
- E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
- E04G1/30—Ladder scaffolds
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
- E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
- E04G7/303—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect
- E04G7/304—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect with tying means for connecting the bars or members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
- E04G2001/242—Scaffolds movable on wheels or tracks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/30—Laterally related members connected by latch means, e.g., scaffold connectors
Definitions
- This invention relates primarily to scaffolding, and more specifically pertains to means for securement of the end frames of scaffolding to its temporarily elevated platform(s) to allow workers to perform various tasks at a convenient elevation that cannot ordinarily be reached from the ground.
- scaffolding has been around for many years, and primarily to make it convenient for a worker to operate at higher levels, such as elevated upon a wall, or upon a ceiling, and have ample room for movement, upon the scaffolding platform, which cannot otherwise be attained by simply working on these types of projects high up upon a ladder.
- Prior art devices show horizontal members generally known as the truss, which are secured to a ladder like structure, generally known as the end frame, for use for securement of scaffolding elevated in place.
- Scaffolding is used mainly to provide a temporary elevated platform for workers to perform various task, that can not be reached from the ground. Because most scaffolding is temporary, it must be able to be erected, and dismantled, with little effort, but not to compromise the safety, structural integrity, and the usage of such structures at elevated levels.
- Most scaffolds incorporating horizontal and vertical members are temporarily fastened together, utilizing a spring loaded pin, as can be seen in FIG. 1 , that normally attaches the horizontal trust member in place. The pin engages into prefabricated holes provided upon the vertical end frames, and thereby, temporary lock the two components together.
- the pin is designed to be locked in place by a hook mechanism, being lodged against a metal bracket, after it has been fully engaged into the end frame, but such structure has also proved to be unreliable due to the fact that the locking mechanism also relies exclusively on springs, as can be noted, which can easily break and cause failure to the structure of the scaffolding, much to the detriment of any workers upon the same, or any workers that may be moving the scaffolding, from one workplace to another.
- springs as can be noted, which can easily break and cause failure to the structure of the scaffolding, much to the detriment of any workers upon the same, or any workers that may be moving the scaffolding, from one workplace to another.
- a further concern with this prior art locking pin method is that the rear spring that is used to force the pin in place, should it fail or break, such spring normally is used to apply back pressure, thereby locking the pin firmly against the bracket, which could actually push the pin rearwardly, and forcing it to become disengaged.
- a worker is required to adjust the platform height with no assistance from others.
- a worker may stand in front of and face an end frame, while reaching both arms around the end frame and placing both of his or her thumbs within the handles, and thereby grasping the gussets with the remaining fore fingers, slippage of the hands or the thumbs can disengage one or both of the shown latch pins, allowing both trusses, with its platform or walk board, to freely move vertically upon the end frame, which can move with some speed, to the detriment of the worker. The worker tries to repeat this process at the opposite end, until the platform becomes level.
- the current invention consist of a scaffolding assembly having two ladder like vertical structures, commonly referred to as end frames, where the end frames are made up of two vertical columns, and rungs expanding transversely therebetween, to form a scaffolding platform supporting structure.
- the platform also generally referred to as a walk board, can be fixed in place through the use of attachment means.
- Truss means is fastened to the end frames, but can be locked into position by means of detent pins, to assure that the end frames remain in place for supporting their walk board, during sustained usage. But, by removing the locking detent pins, grasping the handles provided locking device, and pushing the handles towards its associated gusset, this allows the user to relocate the position of the truss and its walk board, during adjustment.
- the principal object of this invention is to provide scaffolding, capable of being adjusted, a unique handle means that assures to the worker that while adjustment is being performed, there is little chance for support or inadvertent shifting of the walk board and supporting trusses during usage.
- Another object of this invention is to provide a very stable like scaffolding assembly that incorporates safety means which assures permanent locking of the walk board and its trusses to the end frames, and which cannot be disengaged, inadvertently, due to their affixing through the usage of detent safety pins.
- Another object of this invention is to provide a scaffolding assembly that can be quickly and easily assembled, and readily utilized by a single worker, assured of maximum safety.
- FIG. 1 a shows prior art trusses and end frames held by an L shaped latching pin
- FIG. 1 b shows another latching pin mechanism for holding a scaffolding truss to its end frame
- FIG. 2 shows the use of a locking nut for holding scaffolding components to the end frames
- FIG. 3 shows a prior art style of locking and securing device, generally in the manner as shown therein;
- FIG. 4 shows the scaffolding assembly of the current invention, with a combination of its locking device, affixed by detent pins, protected by gussets, for use for locking a walk-board and its trusses to the end frames of the shown scaffoldings;
- FIG. 5 shows a close up view of the locking device with its detent or latch pin in place
- FIG. 6 shows the locking device with a safety lock secured to prevent inadvertent disengagement of the device
- FIG. 7 shows the locking device with its detent pin in place, in full view.
- FIG. 4 a scaffold assembly consisting of two ladder like vertical structures 1 commonly referred to as end frames.
- the end frames are made up of two vertical columns 2 with rungs 3 secured horizontally between the vertical column 2 . It is common for the vertical column 2 to have holes 4 spaced evenly along one or both sides allowing the horizontal member 5 to be secured to the end frames 1 at various vertical locations.
- the horizontal member 5 is commonly referred to as a truss and the main function of the truss 5 is to connect both end frames 1 together and provide support for the walk board 6 .
- the truss 5 is fastened to the end frames 1 by a spring loaded locking device 7 and actuated by removing detent pin 8 , grasping handle 9 , and pulling it towards gusset 10 , therefore releasing truss 5 from end frame 1 allowing the user to relocate the position of the truss and walk board. See also FIG. 5 .
- each truss moving locking device 7 includes the gussets 10 , at the lower end of which engages with a U or box channel 18 , and which engages at its upper end with the truss 5 , as can be noted.
- the pin 12 is pulled rearwardly, it frees the channel member 18 to shift vertically upon their associated vertical columns 2 of the end frames 1 .
- the arcuate supports 19 that hold all of the operative components of the handles 9 , the outer casing 11 of the pin 12 , and the arcuate member 19 is secured, at its two ends, with channels 18 , as can be readily seen.
- the preferred method to adjust to height position of trusses 5 and walk board 6 simultaneously is to remove all detent pins 8 from the trusses 5 .
- While standing in front of and facing end frame 1 wrap both arms around end frames 1 and place thumbs in the center of both handles 9 and more specifically in grooves 15 , shown in FIG. 5 .
- thumbs placed in grooves 15 and the remaining fingers wrapped around gussets 10 the worker is able to disengage both trusses 5 simultaneously from the end frame 1 , with the walk board 6 attached, by compressing or closing his/her first and moving the trusses and walk board assembly vertically to a new location on the end frame.
- the worker may release the tension being placed on the handles 9 allowing springs 14 to push pins 12 into the holes 4 located on column 2 .
- pins 12 are inserted through the holes 4 the trusses are locked and secure.
- the worker will repeat the same steps at the opposite end of the scaffold, making the trusses 5 and walk board 6 level. Inserting detent pins 8 through casings 11 and pins 12 , ensures pins 12 can not become accidentally disengaged causing the truss to become separated with columns 2 and end frames 1 .
- FIG. 5 shows a larger view of the truss 5 with locking device 7 attached.
- the preferred method to disengage and remove the truss 5 from column 2 is to remove detent pin 8 , which passes through the outer casing 11 and through a hole 13 located in locking pin 12 , used to secure the pin 12 in place and prevent it from becoming disengaged from column 2 .
- detent pin 8 By grasping the handle 9 with the fingers, while wrapping the thumb around gusset 10 and-pulling the handle towards gusset 10 by closing ones first, will cause the pin to become disengaged from column 2 allowing the truss to be removed or relocated vertically on the end frame 1 .
- a padlock 16 has replaced detent pin 8 as an alternative method to secure lock pin 12 into hole 4 found on column 2 .
- FIG. 7 shows the complete locking device held into position by its latch pin which prevents unauthorized removal of locking device once it has been fixed into position for holding the trusses, and a supported platform or walk board to their associated end frames.
Abstract
A locking device, spring loaded, for use for holding scaffolding trusses and their walk board secured to the end frames for the scaffold assembly, a locking device incorporating a pin for locking the scaffolding sleeve to its associated end frame, the pin having integrally formed a closed handle at its inward end, opposite from where the pin locks into the end frame, and there being a slot for accommodating a detent pin or the locking device that prevents its inadvertent disengagement while the scaffold assembly is being used or moved.
Description
- This provisional application claims priority to the non-provisional application having Ser. No. 60/934,187, filed on Jun. 12, 2007 which claims priority to the continuation-in-part patent application having Ser. No. 10/884,350, filed Jul. 2, 2004, which claims priority to the continuation application having Ser. No. 10/103,242, which was filed on Mar. 22, 2002, which is a continuation of the application having Ser. No. 09/729,618, filed on Dec. 4, 2000; which is now U.S. Pat. No. 6,533,067, which application is a non-provisional application filed upon the provisional application having Ser. No. 60/169,217, filed on Dec. 6, 1999, which is now U.S. Pat. No. 6,533,067, all said applications owned by a common entity.
- This invention relates primarily to scaffolding, and more specifically pertains to means for securement of the end frames of scaffolding to its temporarily elevated platform(s) to allow workers to perform various tasks at a convenient elevation that cannot ordinarily be reached from the ground.
- Generally, scaffolding has been around for many years, and primarily to make it convenient for a worker to operate at higher levels, such as elevated upon a wall, or upon a ceiling, and have ample room for movement, upon the scaffolding platform, which cannot otherwise be attained by simply working on these types of projects high up upon a ladder.
- Prior art devices, as can be seen in
FIG. 1 , show horizontal members generally known as the truss, which are secured to a ladder like structure, generally known as the end frame, for use for securement of scaffolding elevated in place. Scaffolding is used mainly to provide a temporary elevated platform for workers to perform various task, that can not be reached from the ground. Because most scaffolding is temporary, it must be able to be erected, and dismantled, with little effort, but not to compromise the safety, structural integrity, and the usage of such structures at elevated levels. Most scaffolds incorporating horizontal and vertical members are temporarily fastened together, utilizing a spring loaded pin, as can be seen inFIG. 1 , that normally attaches the horizontal trust member in place. The pin engages into prefabricated holes provided upon the vertical end frames, and thereby, temporary lock the two components together. - Most spring loaded pins simply rely upon the pressure generated by the spring to hold the pin securely in place, as can be noted in
FIG. 1 . It is common, on these types of scaffolds, for the pin to become disengaged by either someone accidentally pulling outward on the handle, such as the L-shaped configuration as noted, as normally found upon the ends of such pins, or by the pin becoming entangled or caught on a fixed object, as the scaffolding is being moved, or by a worker walking by the scaffolding and which inadvertently catches the handle, or its pin, on his or her clothing, the tool pouch, or by any other item that the worker may be carrying, during usage. Or, the spring of the holding pin itself can simply break. Because scaffolds are manufactured to be assembled and disassembled with facility, the tolerance is found between the truss and the end frame connections can be extreme, causing excessive lateral shifting or movement between the two, after repeated usage. This movement between the members may be heightened by the workers activities, while working aboard the scaffolding. Over time, such repeated movements can force the pin to become disengaged, causing the scaffolding to collapse, sometimes with disastrous results. - Despite the improvements as shown in earlier patents, such as U.S. Pat. No. 5,390,761, which discloses the use of a threaded nut to secure a pin in place, such as can be noted in the prior art disclosed in
FIG. 2 , such structure has proven to ineffective because it is difficult to visually confirm that its lock nut is secure and tight, or that the threads upon the pin become worn, damaged, or stripped, or become so covered with foreign matter such as plaster, concrete, construction glue, etc., so as to become rather unusable, and inefficient. Other precautions to overcome these problems can be seen in U.S. Pat. No. 6,823,965, generally as shown as prior art inFIG. 3 herein. In this embodiment, the pin is designed to be locked in place by a hook mechanism, being lodged against a metal bracket, after it has been fully engaged into the end frame, but such structure has also proved to be unreliable due to the fact that the locking mechanism also relies exclusively on springs, as can be noted, which can easily break and cause failure to the structure of the scaffolding, much to the detriment of any workers upon the same, or any workers that may be moving the scaffolding, from one workplace to another. A further concern with this prior art locking pin method is that the rear spring that is used to force the pin in place, should it fail or break, such spring normally is used to apply back pressure, thereby locking the pin firmly against the bracket, which could actually push the pin rearwardly, and forcing it to become disengaged. - Often a worker is required to adjust the platform height with no assistance from others. Thus, while a worker may stand in front of and face an end frame, while reaching both arms around the end frame and placing both of his or her thumbs within the handles, and thereby grasping the gussets with the remaining fore fingers, slippage of the hands or the thumbs can disengage one or both of the shown latch pins, allowing both trusses, with its platform or walk board, to freely move vertically upon the end frame, which can move with some speed, to the detriment of the worker. The worker tries to repeat this process at the opposite end, until the platform becomes level. The problem, though, with current methods is that the worker's hands must be positioned in the center of the shown handles, in order to distribute equal pressure and easily disengage the attaching latch pins. If the worker positions his thumbs in handles slightly off center, the pins may become bound up and fail to disengage, which prevents the scaffolding from being adjusted, or if disengagement occurs, and the scaffolding has excessive weight upon it, it could quickly descend, which could be hazardous to the worker standing just adjacent the end frames for the scaffolding under adjustment.
- The current invention consist of a scaffolding assembly having two ladder like vertical structures, commonly referred to as end frames, where the end frames are made up of two vertical columns, and rungs expanding transversely therebetween, to form a scaffolding platform supporting structure. The platform, also generally referred to as a walk board, can be fixed in place through the use of attachment means. Truss means is fastened to the end frames, but can be locked into position by means of detent pins, to assure that the end frames remain in place for supporting their walk board, during sustained usage. But, by removing the locking detent pins, grasping the handles provided locking device, and pushing the handles towards its associated gusset, this allows the user to relocate the position of the truss and its walk board, during adjustment. It is the convenience of the shown handles that allows the worker to place their thumbs into the center of the handles, which cannot easily be disengaged therefrom during manipulation, and can remain fixed in position, as the walk board and trusses are being elevated or lowered, during adjustment of the scaffold assembly.
- It is, therefore, the principal object of this invention is to provide scaffolding, capable of being adjusted, a unique handle means that assures to the worker that while adjustment is being performed, there is little chance for support or inadvertent shifting of the walk board and supporting trusses during usage.
- Another object of this invention is to provide a very stable like scaffolding assembly that incorporates safety means which assures permanent locking of the walk board and its trusses to the end frames, and which cannot be disengaged, inadvertently, due to their affixing through the usage of detent safety pins.
- Another object of this invention is to provide a scaffolding assembly that can be quickly and easily assembled, and readily utilized by a single worker, assured of maximum safety.
- These and other objects may become more apparent to those skilled in the art upon review of the summary of the invention as provided herein, and upon undertaking a study of the description of its preferred embodiment, in view of the drawings.
- In referring to the drawings,
FIG. 1 a shows prior art trusses and end frames held by an L shaped latching pin; -
FIG. 1 b shows another latching pin mechanism for holding a scaffolding truss to its end frame; -
FIG. 2 shows the use of a locking nut for holding scaffolding components to the end frames; -
FIG. 3 shows a prior art style of locking and securing device, generally in the manner as shown therein; -
FIG. 4 shows the scaffolding assembly of the current invention, with a combination of its locking device, affixed by detent pins, protected by gussets, for use for locking a walk-board and its trusses to the end frames of the shown scaffoldings; -
FIG. 5 shows a close up view of the locking device with its detent or latch pin in place; -
FIG. 6 shows the locking device with a safety lock secured to prevent inadvertent disengagement of the device; and -
FIG. 7 shows the locking device with its detent pin in place, in full view. - In
FIG. 4 is shown a scaffold assembly consisting of two ladder likevertical structures 1 commonly referred to as end frames. The end frames are made up of twovertical columns 2 withrungs 3 secured horizontally between thevertical column 2. It is common for thevertical column 2 to haveholes 4 spaced evenly along one or both sides allowing thehorizontal member 5 to be secured to theend frames 1 at various vertical locations. Thehorizontal member 5 is commonly referred to as a truss and the main function of thetruss 5 is to connect bothend frames 1 together and provide support for the walk board 6. Thetruss 5 is fastened to theend frames 1 by a spring loadedlocking device 7 and actuated by removingdetent pin 8, graspinghandle 9, and pulling it towardsgusset 10, therefore releasingtruss 5 fromend frame 1 allowing the user to relocate the position of the truss and walk board. See alsoFIG. 5 . - The structure of each truss moving
locking device 7 includes thegussets 10, at the lower end of which engages with a U orbox channel 18, and which engages at its upper end with thetruss 5, as can be noted. Thus, when thepin 12 is pulled rearwardly, it frees thechannel member 18 to shift vertically upon their associatedvertical columns 2 of theend frames 1. Also noted are thearcuate supports 19 that hold all of the operative components of thehandles 9, theouter casing 11 of thepin 12, and thearcuate member 19 is secured, at its two ends, withchannels 18, as can be readily seen. - As shown in
FIG. 4 the preferred method to adjust to height position oftrusses 5 and walk board 6 simultaneously, is to remove alldetent pins 8 from thetrusses 5. While standing in front of and facingend frame 1, wrap both arms aroundend frames 1 and place thumbs in the center of bothhandles 9 and more specifically ingrooves 15, shown inFIG. 5 . With thumbs placed ingrooves 15 and the remaining fingers wrapped aroundgussets 10, the worker is able to disengage bothtrusses 5 simultaneously from theend frame 1, with the walk board 6 attached, by compressing or closing his/her first and moving the trusses and walk board assembly vertically to a new location on the end frame. After the desired height location is achieved, the worker may release the tension being placed on thehandles 9 allowingsprings 14 to pushpins 12 into theholes 4 located oncolumn 2. When pins 12 are inserted through theholes 4 the trusses are locked and secure. The worker will repeat the same steps at the opposite end of the scaffold, making thetrusses 5 and walk board 6 level. Inserting detent pins 8 throughcasings 11 and pins 12, ensurespins 12 can not become accidentally disengaged causing the truss to become separated withcolumns 2 and end frames 1. -
FIG. 5 shows a larger view of thetruss 5 with lockingdevice 7 attached. The preferred method to disengage and remove thetruss 5 fromcolumn 2 is to removedetent pin 8, which passes through theouter casing 11 and through ahole 13 located in lockingpin 12, used to secure thepin 12 in place and prevent it from becoming disengaged fromcolumn 2. By grasping thehandle 9 with the fingers, while wrapping the thumb aroundgusset 10 and-pulling the handle towardsgusset 10 by closing ones first, will cause the pin to become disengaged fromcolumn 2 allowing the truss to be removed or relocated vertically on theend frame 1. After moving thetruss 5 vertically to the desired location oncolumn 2 one can release thehandle allowing spring 14 to pushpin 12 into thehole 4 located oncolumn 2. Whenpin 12 is inserted through thehole 4 thetruss 5 is locked and secure. Insertingdetent pin 8 throughcasing 11 andpin 12, ensurespin 12 can not become accidentally disengaged causing the truss to become separated withcolumn 2. - As shown in
FIG. 6 , apadlock 16 has replaceddetent pin 8 as an alternative method to securelock pin 12 intohole 4 found oncolumn 2. By insertingpadlocks 16 through thecasings 11 and pins 12 ensures that the scaffold is locked together and can not be disassembled without unlockingpadlocks 16, therefore adding additional safety and preventing the disassembly as to prevent theft. -
FIG. 7 shows the complete locking device held into position by its latch pin which prevents unauthorized removal of locking device once it has been fixed into position for holding the trusses, and a supported platform or walk board to their associated end frames. - Variations or modifications may be considered by those skilled in the art upon review of the invention as described herein. Such variations, within the spirit of this development, are intended to be encompassed within the scope of the invention as defined. The disclosure of the invention in the drawings is set forth for illustrative purposes only.
Claims (7)
1. A scaffolding securement device including trusses, said trusses supporting a walk board, sleeves connecting to each end of the trusses, end frames, each sleeve provided for sliding vertically upon the end frames, a locking device, the locking device incorporating a pin, one end of the pin capable of locating through the sleeve and the associated end frame, the opposite end of said pin having a handle, and a detent means provided for locking the end frame to the trusses, to prevent their inadvertent disconnection.
2. The scaffolding securement device of claim 1 wherein said detent means comprises a detent pin.
3. The scaffolding securement device of claim 1 wherein said detent means comprises a padlock.
4. The scaffolding securement device of claim 1 wherein a closed handle is integrally formed at the inner end of the detent means, and is capable of being grasped by a workers hand when adjusting the height of the walk board and its supporting trusses relative to the end frames.
5. The scaffolding securement devise of claim 1 and including a gusset interconnecting between each sleeve and a truss, a support structure provided within the gusset and connecting at each end with a sleeve, said support structure provided for holding the locking devise in place during its manipulation and when applied for locking a truss to its associated end frame.
6. The scaffolding securement devise of claim 5 and including a pair of vertical columns provided within each end frame, and the sleeve provided for sliding engagement upon each vertical column during its support of the trusses and a walk board.
7. The scaffolding securement devise of claim 1 and wherein said sleeve is a “U” shaped sleeve.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US12/157,409 US20080310910A1 (en) | 2007-06-12 | 2008-06-09 | Scaffold securement device |
US12/655,618 US20100111593A1 (en) | 1999-12-06 | 2010-01-04 | Scaffold securement device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US93418707P | 2007-06-12 | 2007-06-12 | |
US12/157,409 US20080310910A1 (en) | 2007-06-12 | 2008-06-09 | Scaffold securement device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/884,350 Continuation-In-Part US20040231917A1 (en) | 1999-12-06 | 2004-07-02 | Scaffold moving device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/655,618 Continuation US20100111593A1 (en) | 1999-12-06 | 2010-01-04 | Scaffold securement device |
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US20080310910A1 true US20080310910A1 (en) | 2008-12-18 |
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US12/157,409 Abandoned US20080310910A1 (en) | 1999-12-06 | 2008-06-09 | Scaffold securement device |
US12/655,618 Abandoned US20100111593A1 (en) | 1999-12-06 | 2010-01-04 | Scaffold securement device |
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US12/655,618 Abandoned US20100111593A1 (en) | 1999-12-06 | 2010-01-04 | Scaffold securement device |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US20110209945A1 (en) * | 2010-02-26 | 2011-09-01 | Werner Co. | Scaffold and method |
WO2012021984A1 (en) * | 2010-08-17 | 2012-02-23 | 9105-0732 Quebec Inc. | Base support for hoisting apparatus |
US20120211616A1 (en) * | 2011-02-23 | 2012-08-23 | Taylor Anthony Shane | Method and Apparatus of an Adjustable Scaffold Shelf |
US20180202230A1 (en) * | 2017-01-19 | 2018-07-19 | Direct Scaffold Supply, LP | Ladder Cage Latching Members and Methods of Use |
US20190226217A1 (en) * | 2018-01-24 | 2019-07-25 | Tricam Industries, Inc. | Work platform |
US10837230B1 (en) * | 2016-07-29 | 2020-11-17 | Johnny Curtis | Ladder hoop |
US20220235556A1 (en) * | 2021-01-28 | 2022-07-28 | Donnie Ray Rosier | Stair transport device |
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US20210062580A1 (en) * | 2019-08-30 | 2021-03-04 | Grady F. Smith | Stabilization of Multi-Purpose Scaffold |
CA3203583A1 (en) * | 2020-11-30 | 2022-06-02 | Grady Smith | Multi-function scaffold with reversible platform |
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US4262774A (en) * | 1979-11-26 | 1981-04-21 | Roman Chez | Adjustable scaffold |
US4793438A (en) * | 1986-09-16 | 1988-12-27 | Perry Eugene D | Scaffold latch means |
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US5931260A (en) * | 1998-08-26 | 1999-08-03 | Beauchamp; David | Scaffold assembly with slidable pin connection |
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US6533067B2 (en) * | 1999-12-06 | 2003-03-18 | Mark C. Chick | Scaffold moving device |
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US6863155B2 (en) * | 2002-10-15 | 2005-03-08 | Steven J. Wyse | Mobile scaffolding brake |
US7228936B2 (en) * | 2004-07-09 | 2007-06-12 | Wyse Steven J | Mobile scaffolding braking system |
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US3731758A (en) * | 1971-01-04 | 1973-05-08 | Hibma A | Scaffold drive and steering unit |
US3865203A (en) * | 1973-03-08 | 1975-02-11 | Hibma Anne Marie | Scaffold drive and steering unit |
US3930548A (en) * | 1975-02-03 | 1976-01-06 | Wallraff Richard J | Motorized scaffold attachment |
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US4088202A (en) * | 1976-08-25 | 1978-05-09 | Costello Clifford T | Scaffolding cart |
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US5390761A (en) * | 1993-09-21 | 1995-02-21 | Perry; Eugene D. | Latch for scaffolding |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110209945A1 (en) * | 2010-02-26 | 2011-09-01 | Werner Co. | Scaffold and method |
US9388588B2 (en) * | 2010-02-26 | 2016-07-12 | Werner Co. | Scaffold and method |
US9551160B2 (en) * | 2010-02-26 | 2017-01-24 | Werner Co. | Scaffold and method |
WO2012021984A1 (en) * | 2010-08-17 | 2012-02-23 | 9105-0732 Quebec Inc. | Base support for hoisting apparatus |
US20120211616A1 (en) * | 2011-02-23 | 2012-08-23 | Taylor Anthony Shane | Method and Apparatus of an Adjustable Scaffold Shelf |
US9290954B2 (en) * | 2011-02-23 | 2016-03-22 | Anthony Shane TAYLOR | Method and apparatus of an adjustable scaffold shelf |
US10837230B1 (en) * | 2016-07-29 | 2020-11-17 | Johnny Curtis | Ladder hoop |
US20180202230A1 (en) * | 2017-01-19 | 2018-07-19 | Direct Scaffold Supply, LP | Ladder Cage Latching Members and Methods of Use |
US11519224B2 (en) * | 2017-01-19 | 2022-12-06 | Direct Scaffold Supply, LP | Ladder cage latching members and methods of use |
US20190226217A1 (en) * | 2018-01-24 | 2019-07-25 | Tricam Industries, Inc. | Work platform |
US11629514B2 (en) | 2018-01-24 | 2023-04-18 | Tricam Industries, Inc. | Work platform |
US20220235556A1 (en) * | 2021-01-28 | 2022-07-28 | Donnie Ray Rosier | Stair transport device |
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Legal Events
Date | Code | Title | Description |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: CRAWLER, LLC,MISSOURI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CPIP, LLC;REEL/FRAME:024411/0590 Effective date: 20100507 |