US3211396A - One-way reel with viscous drag - Google Patents

One-way reel with viscous drag Download PDF

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US3211396A
US3211396A US327158A US32715863A US3211396A US 3211396 A US3211396 A US 3211396A US 327158 A US327158 A US 327158A US 32715863 A US32715863 A US 32715863A US 3211396 A US3211396 A US 3211396A
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chamber
reservoir
reel
fluid
secured
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US327158A
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Edward J Mcquillen
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J9/00—Moving targets, i.e. moving when fired at
    • F41J9/08—Airborne targets, e.g. drones, kites, balloons
    • F41J9/10—Airborne targets, e.g. drones, kites, balloons towed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D5/00—Aircraft transported by aircraft, e.g. for release or reberthing during flight
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package
    • B65H59/04—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package by devices acting on package or support
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/02—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades or like members braked by the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/68—Line-carrying missiles, e.g. for life-saving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/60—Damping means, shock absorbers
    • B65H2403/61—Rotation damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/22—Actuating means angular hydraulic

Definitions

  • the present invention relates to a reel assembly and more particular to an assembly wherein reel-out is controlled by viscous drag.
  • the general purpose of this invention is to provide a viscous braking system which permits minimum reel-out time of the tow target and insures a slow payout velocity at the termination of the payout which thereby precludes the failure of the tow cable prior to the target presentation.
  • the present invention obviates the deleterious condition arising from the change in fluid viscosity due to the heat generated during braking by providing a novel selfcirculating system.
  • An object of the present invention is the provision of a simple, compact, self-contained one-way reel assembly.
  • Another object is to provide a self-contained reel and brake assembly which has high initial payout velocity and low terminal payout velocity.
  • a further object of the invention is the provision of a reel assembly which require no external controls for the operation thereof and which when utilized in the field of towed targetry may be adjusted prior to the use thereof to accommodate various initial payout speeds and terminal payout velocities and varying size targets so that rupture of the tow cable is precluded at the termination of the payout of the tow line.
  • Still another object is to provide a one-way reel assembly and viscous braking mechanism therefor wherein the viscosity of the fluid utilized within the system is maintained over the wide temperature ranges which arise.
  • a pair of laterally spaced, parallel plates 24, which form the side plates of the reel unit 12 are coaxially disposed about the shaft 20 and are rigidly held in position by reason of the cooperation of fastening rings 25 and the shoulder 26 formed on the periphery of the shaft 20.
  • the surface 27 of the shaft 20 between parallel plates 24 provides the surface about which the tow line cable is wrapped. It should be noted at this point that the end of the tow line cable, not shown, is looped loosely and secured about the surface 27 so as to provide a sliding arrangement between the surface 27 and the end of the tow line cable.
  • a hub assembly generally noted at 30 comprising a portion of the viscous brake mechanism 13 includes a cylindrical portion 31 which is internally grooved at 32 and externally threaded at 33 for receiving bearing assembly 35.
  • the outer race 37 of the bearing assembly is held in position by reason of its abutment with the shoulder portion 38 of the internally grooved portion 32 together with the engagement with a restraining nut 36.
  • the inner race 39 is held in its fixed position by reason of the engagement thereof with a shoulder portion 40 formed on the shaft 20 and the engagement of a washer-fastening nut arrangement 41 threaded on another portion of the shaft 20.
  • Shaft 20 is thereby precluded from axial movement relative to the support unit 11 by reason of cooperation of fastening ring 21 and shoulder 22 of shaft 20, while bearing assembly 15 is free to slide axially for slight differences in manufacturing tolerances.
  • the hub assembly 30 further includes circular flange 45 terminating in laterally offset edge portions 46.
  • the hub assembly 30 is fixed to the base plate 16 of the support unit 11 by fastening means 47 which engages the base plate and the laterally offset edge portion 46.
  • a washer shaped plate 50 conforming to the outer confines of the hub assembly 30 is secured to the hub assembly 30 by reason of the mutual notched arrangement 51 and the fastening means 52.
  • the hub assembly 30 together with the washer shaped plate 50 provides a housing or fluid chamber indicated at 54 within which rotates a circular disk 55 which in turn is removably and fixedly secured to the rotating shaft 20.
  • Circular disk 55 is secured to shaft 20 by reason of the abutment of one side of the disk on a shoulder portion 57 formed about the periphery of the shaft 20 together with the washer nut arrangement 58 which threadably engages the shaft at the terminal portion thereof and abuts the other side of the circular disk 55 and urges the same into its abutting condition with the shoulder 57.
  • Reservoir assembly 60 including inlet 61 is welded or otherwise secured to the plate 50 and is substantially filled with a viscous fluid such as silicone oil or the like of predetermined viscosity.
  • a viscous fluid such as silicone oil or the like of predetermined viscosity.
  • ingress ports 65 are provided in the washer shaped plate 50 and additionally coaxial slot 66 and cross ports 67 are formed at the end of the shaft member, the cross ports being arranged to communicate with the interior of the housing 54.
  • egress openings 69 are additionally provided in the plate 50 at the outer extremity of the housing 54.
  • the shear area of circular disk 55, the spacing of the disk 55 from chamber sidewalls, and the viscosity of the fluid are calculated such that the viscous drag on the circular flat disk rotating within the housing will provide a predetermined slow terminal payout velocity of, for example, 25 feet per second in order to avoid high impact.
  • the location of the ingress and egress ports and the quantity of oil within the reservoir are additionally calculated to provide sufficient circulation and attendant absorption of the heat generated when the reel is in operation.
  • a fluid chamber substantially enclosing said circular disk member and including ingress and egress ports communicating exteriorly of said chamber
  • a reel including a hub journaled for rotation within said support means
  • said hub having at one end thereof a coaxial groove formed therein and radial ports communicating with said coaxial groove
  • a fluid chamber substantially enclosing said circular disk member and including ingress and egress ports communicating exteriorly of said chamber
  • said hub having at one end thereof a coaxial groove formed therein and radial ports communicating with said coaxial groove
  • a fluid chamber substantially enclosing said circular disk member and including ingress and egress ports communicating exteriorly of said chamber
  • a viscous braking mechanism for a one-way tow 5 line reel comprising:
  • a rotatable shaft member formed as a part of the reel and having one end extending beyond the confines thereof
  • said one end of said shaft having a coaxial groove formed therein and a plurality of radial ports having fluid communication with said coaxial groove
  • a fluid chamber substantially enclosing said circular disk member and providing a predetermined area between said disk member and said enclosing chamber
  • said chamber further including centrally located ingress ports having fluid communication with said reservoir and circumferentially located egress ports having fluid communication with said reservoir,
  • a self-contained tow line reel and viscous brake assembly for obtaining a predetermined terminal payout velocity comprising:
  • a fluid chamber substantially enclosing said circular disk member and providing a predetermined area between said disk member and said enclosing chamber
  • said chamber further including centrally located ingress ports having fluid communication with said reservoir and circumferentially located egress ports having fluid communication with said reservoir,

Description

INVENTOR.
EDWARD J. McQUlLLEN Oct. 12, 1965 J. M QUILLEN ONE-WAY REEL WITH VISCOUS DRAG Filed Nov. 29, 1963 will a. w w W S m a m a\\ w w m m w I! F r- Mr; H F F Iii in.
United States Patent 3,211,396 ONE-WAY REEL WITH VISCOUS DRAG Edward J. McQuillen, Huntingdon Valley, Pa., assignor to the United States of America as represented by the Secretary of the Navy Filed Nov. 29, 1963, Ser. No. 327,158 5 Claims. (Cl. 242156.2) (Granted under Title 35, US. Code (1952), see. 266) The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
The present invention relates to a reel assembly and more particular to an assembly wherein reel-out is controlled by viscous drag.
In the field of air-launched towed targetry, the development of an expendable and inexpensive target established a requirement for the subsequent development of a compact, inexpensive one-way reel.
The use of conventional reels obtained a high initial payout velocity but impact failure of the towline occurred when the tow cable was fully payed out. In order to insure a low payout speed, for example 25 feet per second, at the termination of the towline payout various braking systems have been suggested. These suggestions include mechanical or hydraulically applied brakes and centrifugal brakes each of which result in a complex, expensive assembly which additionally requires standby manual controls.
In contradistinction to the above systems the general purpose of this invention is to provide a viscous braking system which permits minimum reel-out time of the tow target and insures a slow payout velocity at the termination of the payout which thereby precludes the failure of the tow cable prior to the target presentation. In addition, the present invention obviates the deleterious condition arising from the change in fluid viscosity due to the heat generated during braking by providing a novel selfcirculating system.
An object of the present invention is the provision of a simple, compact, self-contained one-way reel assembly.
Another object is to provide a self-contained reel and brake assembly which has high initial payout velocity and low terminal payout velocity.
A further object of the invention is the provision of a reel assembly which require no external controls for the operation thereof and which when utilized in the field of towed targetry may be adjusted prior to the use thereof to accommodate various initial payout speeds and terminal payout velocities and varying size targets so that rupture of the tow cable is precluded at the termination of the payout of the tow line.
Still another object is to provide a one-way reel assembly and viscous braking mechanism therefor wherein the viscosity of the fluid utilized within the system is maintained over the wide temperature ranges which arise.
Other objects and features of the invention will become apparent to those skilled in the art as the disclosure is made in the following description of a preferred embodiment of the invention as illustrated in the accompanying 3,211,396 Patented Oct. 12, 1965 A pair of laterally spaced, parallel plates 24, which form the side plates of the reel unit 12 are coaxially disposed about the shaft 20 and are rigidly held in position by reason of the cooperation of fastening rings 25 and the shoulder 26 formed on the periphery of the shaft 20. The surface 27 of the shaft 20 between parallel plates 24 provides the surface about which the tow line cable is wrapped. It should be noted at this point that the end of the tow line cable, not shown, is looped loosely and secured about the surface 27 so as to provide a sliding arrangement between the surface 27 and the end of the tow line cable.
A hub assembly generally noted at 30 comprising a portion of the viscous brake mechanism 13 includes a cylindrical portion 31 which is internally grooved at 32 and externally threaded at 33 for receiving bearing assembly 35. The outer race 37 of the bearing assembly is held in position by reason of its abutment with the shoulder portion 38 of the internally grooved portion 32 together with the engagement with a restraining nut 36. The inner race 39 is held in its fixed position by reason of the engagement thereof with a shoulder portion 40 formed on the shaft 20 and the engagement of a washer-fastening nut arrangement 41 threaded on another portion of the shaft 20. Shaft 20 is thereby precluded from axial movement relative to the support unit 11 by reason of cooperation of fastening ring 21 and shoulder 22 of shaft 20, while bearing assembly 15 is free to slide axially for slight differences in manufacturing tolerances.
The hub assembly 30 further includes circular flange 45 terminating in laterally offset edge portions 46. The hub assembly 30 is fixed to the base plate 16 of the support unit 11 by fastening means 47 which engages the base plate and the laterally offset edge portion 46.
A washer shaped plate 50 conforming to the outer confines of the hub assembly 30 is secured to the hub assembly 30 by reason of the mutual notched arrangement 51 and the fastening means 52. The hub assembly 30 together with the washer shaped plate 50 provides a housing or fluid chamber indicated at 54 within which rotates a circular disk 55 which in turn is removably and fixedly secured to the rotating shaft 20. Circular disk 55 is secured to shaft 20 by reason of the abutment of one side of the disk on a shoulder portion 57 formed about the periphery of the shaft 20 together with the washer nut arrangement 58 which threadably engages the shaft at the terminal portion thereof and abuts the other side of the circular disk 55 and urges the same into its abutting condition with the shoulder 57.
Reservoir assembly 60 including inlet 61 is welded or otherwise secured to the plate 50 and is substantially filled with a viscous fluid such as silicone oil or the like of predetermined viscosity. In order to permit the fluid to gain entrance to the chamber 54, ingress ports 65 are provided in the washer shaped plate 50 and additionally coaxial slot 66 and cross ports 67 are formed at the end of the shaft member, the cross ports being arranged to communicate with the interior of the housing 54. To permit circulation and cooling of the fluid, egress openings 69 are additionally provided in the plate 50 at the outer extremity of the housing 54.
The shear area of circular disk 55, the spacing of the disk 55 from chamber sidewalls, and the viscosity of the fluid are calculated such that the viscous drag on the circular flat disk rotating within the housing will provide a predetermined slow terminal payout velocity of, for example, 25 feet per second in order to avoid high impact. The location of the ingress and egress ports and the quantity of oil within the reservoir are additionally calculated to provide sufficient circulation and attendant absorption of the heat generated when the reel is in operation.
Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.
What is claimed is:
1. In a one-way reel for use with expendable tow targets the combination comprising:
support means having a bearing assembly contained therein,
a shaft member having one end thereof secured for rotation within said bearing assembly,
a pair of spaced peripheral shoulders on said shaft member and a pair of circular side plates abutting and secured to said shoulders and about said shaft member forming a reel,
the other end of said shaft member also rotatably secured within said support and having a coaxial groove formed therein and radial ports communicating with said coaxial groove,
a circular disk member rigidly secured to said shaft member for rotation therewith,
a fluid chamber substantially enclosing said circular disk member and including ingress and egress ports communicating exteriorly of said chamber,
a reservoir secured to said chamber and filled with a viscous fluid,
said egress and ingress ports communicating with said reservoir,
and said coaxial groove and said radial ports having fluid communication with said reservoir and said chamber respectively.
2. In a one-way reel for use with expendable tow targets the combination comprising:
support means,
a reel including a hub journaled for rotation within said support means,
said hub having at one end thereof a coaxial groove formed therein and radial ports communicating with said coaxial groove,
a circular disk member rigidly secured to said one end of said hub for rotation therewith,
a fluid chamber substantially enclosing said circular disk member and including ingress and egress ports communicating exteriorly of said chamber,
a reservoir secured to said chamber and filled with a viscous fluid,
said egress and ingress ports communicating with said reservoir,
and said coaxial groove and said radial ports having fluid communication with said reservoir and said chamber respectively.
3. In a one-way reel for use with expendable tow targets the combination comprising:
a rotatable hub member subject to variations in applied torque,
said hub having at one end thereof a coaxial groove formed therein and radial ports communicating with said coaxial groove,
a circular disk member rigidly secured to said one end of said hub for rotation therewith,
a fluid chamber substantially enclosing said circular disk member and including ingress and egress ports communicating exteriorly of said chamber,
a reservoir secured to said chamber and filled with a viscous fluid,
said egress and ingress ports communicating with said reservoir,
and said coaxial groove and said radial ports having fluid communication with said reservoir and said chamber respectively.
4. A viscous braking mechanism for a one-way tow 5 line reel comprising:
a rotatable shaft member formed as a part of the reel and having one end extending beyond the confines thereof,
said one end of said shaft having a coaxial groove formed therein and a plurality of radial ports having fluid communication with said coaxial groove,
a circular disk member of predetermined surface area rigidly secured to said one end of said shaft for rotation therewith,
a fluid chamber substantially enclosing said circular disk member and providing a predetermined area between said disk member and said enclosing chamber,
a reservoir secured to the outside of said chamber and filled with a viscous fluid,
said chamber further including centrally located ingress ports having fluid communication with said reservoir and circumferentially located egress ports having fluid communication with said reservoir,
said radial ports of said shaft having fluid communication with said chamber,
and said coaxial groove having fluid communication with said reservoir.
5. A self-contained tow line reel and viscous brake assembly for obtaining a predetermined terminal payout velocity comprising:
support means having a bearing assembly contained therein,
a shaft member having one end thereof secured for rotation within said bearing assembly,
a pair of spaced peripheral shoulders on said shaft member and a pair of circular side plates abutting and secured to said shoulders and about said shaft member forming a reel,
the other end of said shaft having a coaxial groove formed therein and a plurality of radial ports having fluid communication with said coaxial groove,
a circular disk member of predetermined surface area rigidly secured to said one end of said shaft for rotation therewith,
a fluid chamber substantially enclosing said circular disk member and providing a predetermined area between said disk member and said enclosing chamber,
a reservoir secured to the outside of said chamber and filled with a viscous fluid,
said chamber further including centrally located ingress ports having fluid communication with said reservoir and circumferentially located egress ports having fluid communication with said reservoir,
said radial ports of said shaft having fluid communication with said chamber,
and said coaxial groove having fluid communication with said reservoir.
References Cited by the Examiner UNITED STATES PATENTS MERVIN STEIN, Primary Examiner.
STANLEY N. GILBREATH, Examiner.

Claims (1)

  1. 3. IN A ONE-WAY REEL FOR USE WITH EXPANDABLE TOW TARGETS THE COMBINATION COMPRISING: A ROTATABLE HUB MEMBER SUBJECT TO VARIATIONS IN APPLIED TORQUE. SAID HUB HAVING AT ONE END THEREOF A COAXIAL GROOVE FORMED THEREIN AND RADIAL PORTS COMMUNICATING WITH SAID COAXIAL GROOVE, A CIRCULAR DISK MEMBER RIGIDLY SECURED TO SAID ONE END OF SAID HUB FOR ROTATION THEREWITH, A FLUID CHAMBER SUBSTANTIALLY ENCLOSING SAID CIRCULAR DISK MEMBER AND INCLUDING INGRESS AND EGRESS PORTS COMMUNICATING EXTERIORLY OF SAID CHAMBER, A RESERVOIR SECURED TO SAID CHAMBER AND FILLED WITH A VISCOUS FLUID, SAID EGRESS AND INGRESS PORTS COMMUNICATING WITH SAID RESERVOIR, AND SAID COAXIAL GROOVE AND SAID RADIAL PORTS HAVING FLUID COMMUNICATION WITH SAID RESERVOIR AND SAID CHAMBER RESPECTIVELY.
US327158A 1963-11-29 1963-11-29 One-way reel with viscous drag Expired - Lifetime US3211396A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656583A (en) * 1969-09-02 1972-04-18 Air Prod & Chem Method and apparatus for producing a torque load on a shaft
US3865216A (en) * 1973-10-03 1975-02-11 Efdyn Corp Continuous rotary damper
US4173332A (en) * 1976-11-03 1979-11-06 Dulondel Jacques Rotary speed limiter device
US4446884A (en) * 1981-06-08 1984-05-08 Rader Jr Homer J Take-up reel with controlled rewind velocity
DE3605185A1 (en) * 1985-02-21 1986-08-21 Nifco Inc., Yokohama, Kanagawa ROTATING SHOCK ABSORBER
US4645199A (en) * 1985-01-25 1987-02-24 Bio-Dynamic Innovations, Inc. Exercise device
US4717133A (en) * 1984-07-13 1988-01-05 Unisearch Limited Leg holding and positioning device
WO1997046284A1 (en) * 1996-06-03 1997-12-11 Elite S.R.L. Braked roller device for cycling training
US6158684A (en) * 1998-02-09 2000-12-12 Ab Ph. Nedermann & Co. Reeling device for hoses and/or cables
US6799738B2 (en) * 1999-06-01 2004-10-05 Coxwells, Inc. Take-up reel with uni-directional speed governed retractor
US20050014611A1 (en) * 2001-08-09 2005-01-20 Michael Gearon Variable resistance device for an exercise machine
US20080164361A1 (en) * 2007-01-09 2008-07-10 Hannay Reels, Inc. Spring retractable reel having a pneumatic retraction governor
US20080183606A1 (en) * 2007-01-25 2008-07-31 Metavante Corporation Medical savings accounts with investment and loan-account access
US20110048877A1 (en) * 2009-08-28 2011-03-03 Ellergon Antriebstechnik Gesellschaft M.B.H Torsional vibration damper
US20150014111A1 (en) * 2013-07-15 2015-01-15 Nien Made Enterprise Co., Ltd. One-way resistance roll-up apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1467523A (en) * 1922-03-30 1923-09-11 Albert P Andlauer Reel
US1992911A (en) * 1932-03-26 1935-02-26 Parkersburg Rig & Reel Co Hydrodynamic brake for hoists and the like
US2607548A (en) * 1950-06-29 1952-08-19 Albert A Hollander Fishing reel
US2923549A (en) * 1955-10-31 1960-02-02 Del Mar Engineering Lab Inc Tow target launcher for use on airborne vehicles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1467523A (en) * 1922-03-30 1923-09-11 Albert P Andlauer Reel
US1992911A (en) * 1932-03-26 1935-02-26 Parkersburg Rig & Reel Co Hydrodynamic brake for hoists and the like
US2607548A (en) * 1950-06-29 1952-08-19 Albert A Hollander Fishing reel
US2923549A (en) * 1955-10-31 1960-02-02 Del Mar Engineering Lab Inc Tow target launcher for use on airborne vehicles

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656583A (en) * 1969-09-02 1972-04-18 Air Prod & Chem Method and apparatus for producing a torque load on a shaft
US3865216A (en) * 1973-10-03 1975-02-11 Efdyn Corp Continuous rotary damper
US4173332A (en) * 1976-11-03 1979-11-06 Dulondel Jacques Rotary speed limiter device
US4446884A (en) * 1981-06-08 1984-05-08 Rader Jr Homer J Take-up reel with controlled rewind velocity
US4717133A (en) * 1984-07-13 1988-01-05 Unisearch Limited Leg holding and positioning device
US4645199A (en) * 1985-01-25 1987-02-24 Bio-Dynamic Innovations, Inc. Exercise device
DE3605185A1 (en) * 1985-02-21 1986-08-21 Nifco Inc., Yokohama, Kanagawa ROTATING SHOCK ABSORBER
US4691811A (en) * 1985-02-21 1987-09-08 Nifco Inc. Rotary damper
WO1997046284A1 (en) * 1996-06-03 1997-12-11 Elite S.R.L. Braked roller device for cycling training
US6158684A (en) * 1998-02-09 2000-12-12 Ab Ph. Nedermann & Co. Reeling device for hoses and/or cables
US6799738B2 (en) * 1999-06-01 2004-10-05 Coxwells, Inc. Take-up reel with uni-directional speed governed retractor
US20050014611A1 (en) * 2001-08-09 2005-01-20 Michael Gearon Variable resistance device for an exercise machine
US7628739B2 (en) * 2001-08-09 2009-12-08 Michael Gearon Variable resistance device for an exercise machine
US20080164361A1 (en) * 2007-01-09 2008-07-10 Hannay Reels, Inc. Spring retractable reel having a pneumatic retraction governor
US7475841B2 (en) 2007-01-09 2009-01-13 Hannay Reels, Inc. Spring retractable reel having a pneumatic retraction governor
US20080183606A1 (en) * 2007-01-25 2008-07-31 Metavante Corporation Medical savings accounts with investment and loan-account access
US20110048877A1 (en) * 2009-08-28 2011-03-03 Ellergon Antriebstechnik Gesellschaft M.B.H Torsional vibration damper
US8627931B2 (en) * 2009-08-28 2014-01-14 Ellergon Antriebstechnik Torsional vibration damper
US20150014111A1 (en) * 2013-07-15 2015-01-15 Nien Made Enterprise Co., Ltd. One-way resistance roll-up apparatus

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