US3885789A - Exercising device - Google Patents

Exercising device Download PDF

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Publication number
US3885789A
US3885789A US481907A US48190774A US3885789A US 3885789 A US3885789 A US 3885789A US 481907 A US481907 A US 481907A US 48190774 A US48190774 A US 48190774A US 3885789 A US3885789 A US 3885789A
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US
United States
Prior art keywords
cord
housing
capstan
exercising device
rewind
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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 - Lifetime
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US481907A
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English (en)
Inventor
Michael E Deluty
Morton A Levine
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Individual
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Individual
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Filing date
Publication date
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Priority to US481907A priority Critical patent/US3885789A/en
Priority to US05/579,704 priority patent/US3995853A/en
Application granted granted Critical
Publication of US3885789A publication Critical patent/US3885789A/en
Priority to DE2526625A priority patent/DE2526625C2/de
Priority to GB26186/75A priority patent/GB1509601A/en
Priority to CA229,728A priority patent/CA1021368A/en
Priority to JP7507575A priority patent/JPS5738262B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/15—Arrangements for force transmissions
    • A63B21/151—Using flexible elements for reciprocating movements, e.g. ropes or chains
    • A63B21/153—Using flexible elements for reciprocating movements, e.g. ropes or chains wound-up and unwound during exercise, e.g. from a reel
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/00058—Mechanical means for varying the resistance
    • A63B21/00069—Setting or adjusting the resistance level; Compensating for a preload prior to use, e.g. changing length of resistance or adjusting a valve
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/012—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using frictional force-resisters
    • A63B21/018—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using frictional force-resisters including a rope or other flexible element moving relative to the surface of elements
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4041—Interfaces with the user related to strength training; Details thereof characterised by the movements of the interface
    • A63B21/4043—Free movement, i.e. the only restriction coming from the resistance

Definitions

  • ABSTRACT An exercising device having a housing which is attached to a stationary surface. A cord with a hand grip on its free end can be pulled out of the housing against the internal resistance of the exercising device. The amount of internal resistance can be varied by means of a control knob. An automatic rewind mechanism draws the cord back into the housing when the cord is released.
  • the device has, as a specific feature, a manually adjustable resisting force mechanism.
  • This mechanism includes the combination of a stationary capstan around which the cord is wrapped, and a variable force friction nip mechanism which (a) retards the cord as it is pulled out of the housing, and (b) maximizes the capstans frictional resistance by keeping the cord tightly wound around the capstan as the cord is being pulled out of the housing.
  • an exercising device which is a simple mechanism, which is inexpensive to construct, and which does not employ high resistance force friction brake shoes on the pull cord.
  • a further object of this invention is to provide an exercising device on which the operator can manually select a variety of specific pull cord resistance force levels.
  • a still further object of this invention is to provide an exercising device which the operator can utilize in a true exercising motion as if he were lifting a barbell or a dumbbell.
  • the exercising device of the preferred embodiment of this invention has a hollow housing in which a rotatably mounted retractor reel is spring-loaded in the rewind direction.
  • a flexible cord is attached to the retractor reel and extends out of the housing where his fitted with a hand grip. When little or no pulling force is exerted by the operator on the hand grip, the retractor reel rewinds the cord into the housing.
  • the first resisting mechanism is the retractor reel which continuously produces a small biasing force on the cord in the rewind direction.
  • the other two mechanisms resisting the outward pull .of the cord both operate to apply friction force to the cord as it is being pulled out (unwound) by the operator and both apply no friction force to the cord as it is being rewound by the retractor reel.
  • the friction nip mechanism has a spring-loaded support member and an opposed spring-loaded pivoted jamming arm which cooperate to form a nip through which the cord is led from the retractor reel.
  • the spring tension on the support member can be manually adjusted by the operator to vary the force applied by the nip on the cord in opposition to the exteriorly applied pulling force on the cords hand grip.
  • the cord After the cord passes from the retractor reel through the friction nip mechanism, it is led to and is passed at least one full turn around the capstan and then is led out of the housing.
  • the capstan can be locked in a stationary position to oppose the cords being pulled out of the housing, or it can be unlocked and allowed to free wheel as the cord is being pulled out of the housing. In either position, the capstan is allowed to free wheel in the rewind direction. Because the capstan is inoperative unless the cord around the capstan is pulled tightly in both directions, the friction nip mechanism has the function of exerting a drag on the cord on the rewind side of the capstan for two purposes. First, it acts in opposition to the outward pull on the cord. Second, it causes the capstan to frictionally resist the outward pull on the cord.
  • the retractor reel urges the cord in the rewind direction while the friction nip mechanism and the capstan apply no force on the cord as it rewinds.
  • the friction nip mechanism applies frictional force on the cord to resist its being pulled out of the housing by the operator.
  • the capstan can be locked into its operative stationary position to cooperate with the friction nip mechanism and the retractor reel to all three act upon the cord to resist its being pulled out of the housing by the operator.
  • FIG. 1 is a perspective view of the exercising device of the preferred embodiment of this invention showing an operator holding the hand grip and pulling the cord out of the housing.
  • FIG. 2 is a perspective view of the exercising device showing details of the housing exterior.
  • FIG. 3 is a perspective view of the exercising device of FIG. 2 showing the housing interior and the mechanisms mounted therein.
  • FIG. 4 is a detail view of the exercising device of FIG. 3 showing the housing interior and the mechanisms mounted therein, the mechanisms being partially cut away for purposes of clarity.
  • FIG. 1 shows a human operator performing a curling exercise with the exercising device 10 of this invention.
  • the curling exercise is usually performed with a barbell and it is the purpose of FIG. 1 to show one example of v how exercising device 10 can be substituted for a barbell in weight training.
  • the operator simply dials the. desired weight setting on the device and then uses the exercising device as if it were a barbell weighing the dialed amount. 1
  • Exercising device 10 is provided with a flexible pull cord 12, preferably made of nylon, and a detachable hand grip 14.
  • a flexible pull cord 12 preferably made of nylon
  • a detachable hand grip 14 can be attached to the end of cord 12 in order to meet the requirements of various exercise routines. Examples of different grips include double grips, bar grips, loop grips, grips to fit the operators head, and grips to fit the operators feet.
  • the exercising device of this invention is not limited to any specific type of grip attached to the end of pull. cord 12.
  • the exercising device In order to hold the exercising device 10 in a station- I ary position (which is usually preferred), the exercising device is provided with various fittings, such as interior stanchions 16 (see FIG. 3) over which the eye of a short length of line 18 can be looped. Line 18 can then be attached to a foot rest 20, or to a wall fitting, or to a ceiling fitting, or to other fixed supports. It will be understood that a wide variety of such fittings is contemplated and this invention is not limited to any specific type or location of fitting, or any specific type or location of line, or any specific type or location of foot rest or other fixed support.
  • the exercising device 10 has a hollow housing 22 which has a cord opening 24 through which pull cord 12 extends.
  • the outer end of cord 12 is fitted with hand grip l4 and the inner end of cord 12 is fixed to and is wrapped several times around retractor reel 26.
  • Retractor reel 26 is rotatably mounted in the housing and is spring-powered in the clockwise or rewind direction.
  • retractor reel 26 exerts a continuous rewind force on the cord of approximately 1 to 3 lbs.'Thus, whenever the operator releases hand grip 14, or exerts less than the retractor reel rewind force, cord 12 will be drawn into housing 22 through opening 24 and will be rewound on reel 26.
  • the size of hand grip l4 prevents the outer end of cord 12 from being drawn entirely into housing 22 through opening 24.
  • a manually adjustable variable resistance means is mounted within the housing between retractor reel 26 and housing cord opening 24.
  • this variable resistance means is more specifically identified as a friction nip means which includes a support member 28, which contacts one side of cord 12, and a pivoted jamming arm 30, which is biased by spring 32 against the other side of cord 12.
  • the purpose of the friction nip means is to apply frictional force against the cord as it is pulled in the unwind (outward) direction only. This frictional force must be overcome by the operator in order to pull the cord out of the housing. Furthermore, this frictional force is necessary to enable the capstan to operate effectively in its locked stationary position, as will be described subsequently.
  • Support member 28 can take various forms and, in the shown preferred embodiment, is a block having a rounded and grooved shoulder surface 34 which bears against and guides the cord 12 as the cord passes from retractor reel 26 through cord opening 24. Support member 28 also has a base portion 36 having guide surfaces on one exterior side which ride on mating guide surfaces which are provided on the adjacent interior wall of housing 22. By this arrangement, support member 28 can be reciprocated towards and away from cord 12 along a path which is perpendicular to the cord. Obviously, other types of guide means can be substituted for the shown mating guide surfaces.
  • Support member base portion 36 has a spring socket 38 formed therein.
  • a helical spring 40 is positioned in socket 38 and is retained therein by threaded shaft 42.
  • the shaft is carried by a smooth-bored shaft support block 44 which is formed on the interior wall of housing 22, and a control knob 46 is fixed on the exterior end of shaft 42.
  • a collar 48 is mounted on shaft 42 to prevent axial movement of the shaft while permitting the shaft to be rotated by the control knob.
  • a floating nut 50 is provided with internal threads which mesh with the external threads on shaft 42.
  • An indicating arrow 52 is fixed to floating nut 50 and extends through housing slot 54. Because the indicating arrow 52 is confined within slot 54, nut 50 cannot rotate when shaft 42 is rotated. Instead, when control knob 46 is rotated, shaft 42 is rotated, and nut 50 moves axially on shaft 42. This causes indicating arrow 52 to move along slot 54 and across weight dial 56 (as shown in FIG. 2).
  • the nip formed between support member 28 and jamming arm 30 exerts frictional force on the cord only during the outward (unwind) travel of the cord through the nip. This is because the jamming arm is positioned so that its free end is always pointed in the rewind direction and is therefore ineffective as a nip-forming component during the rewinding travel of the cord.
  • the cord can be alternately pulled out and rewound back numerous times without becoming jammed in the nip because a relatively loose fit exists between the guide surfaces on the support member 28 and the guide surfaces on the interior housing wall.
  • there is considerable support member lateral play which facilitates easy nip opening.
  • a second optional substantial cord resistance force is provided by the capstan which is generally indicated as 58.
  • the capstan has an inoperative mode in which it freewheels in both directions and an operative mode in which it is either entirely stationary or in which it is sta-.
  • Capstan 58 has a fixed central shaft 60 mounted in the housing parallel to the central shaft of retractor reel 26.
  • a flanged spool 62 is rotatably mounted on central shaft 60 and can revolve in either direction.
  • a guide roller 64 is provided near cord opening 24 to guide cord 12 around capstan 58 and out of opening 24.
  • capstan was assumed to have been in its inoperative mode in which it freewheeled in both directions and functioned simply as a guide roller like guide roller 64.
  • Capstan spool 62 is provided with four symmetrically spaced locking recesses 66 in its upper flat end surface.
  • a locking lever 68 is mounted in housing 22 and can be pivoted between an inoperative position which maintains spring-loaded locking pin 70 above the locking recesses 66, and an operative position which lowers locking pin '70 into one of the four locking recesses 66. Once the locking pin 70 is lowered into. any of the locking recesses 66, the capstan spool 62 cannot rotate about shaft 60.
  • a plurality of recesses 66' is provided simply for ease of locking. A greater or lesser number of recesses would also be satisfactory.
  • cord 12 It is preferred to wrap cord 12 two and one-half turns around spool 62. Then, if the friction nip applies 35 lbs. of force against the outward pull of the cord, the locked capstan will multiply the resistance force by a factor of approximately ten so that the operator must exert a force of approximately 350 lbs. on the hand grip in order to pull cord 12 out of the housing. Obviously, many factors will affect the exact multiplying ratio produced by the capstan. Examples of these factors include the diameter of the capstan, the capstan surface roughness, the diameter of the cord, the cord material, the number of turns on the capstan, and numerous others. However, regardless of the exact multiplying ratio, the capstan will produce a substantial resistance force opposing the passage of the cord out of the housing.
  • capstan cannot effectively provide frictional resistance against the cord unless the cord is held tightly against the spool from both directions. For this reason, capstan operation requires the resistance produced by the friction nip.
  • the small rewind force of retractor reel,26 is sufficient to draw the cord back into the housing because without an outward force on the cord, the cord simply slips on the stationary capstan spool.
  • the. capstan in its operative mode, could be provided with a ratcheting mechanism wherein the spool is fixed against rotation in the unwind or outward direction yet is permitted to freely rotate in the rewind or inward direction. Also, instead of a ratcheting mechanism, many types of clutch mechanisms could be substituted to accomplish the same purpose.
  • the upper figures are a multiple of ten times the lower figures (inoperative mode).
  • the arrow would read 35 lbs. on the lower dial figures and 350 lbs. on the upper dial figures.
  • other resistance force level indicating arrangements could be provided to perform the same function as the illustrated arrangement.
  • This invention features a great ease of adjustability whereby the operator can set the cord resistance force levels across a very wide range by locking or unlocking the capstan and by dialing the desired spring tension on the nip. It is the combination of these two cooperative features which gives the exercising device of the preferred embodiment of this invention the superior qualities which it possesses.
  • An exercising device comprising:
  • a housing having a hollow interior and a cord openb. a cord retractor reel mounted for rotation within said housing;
  • rewind means for continuously urging said retractor reel in the rewind direction
  • manually adjustable variable resistance friction nip means mounted within said housing between said cord retractor reeland said cord opening for applying frictional force to said cord, said friction nip means including a support member contacting one side of said cord, a pivoted jamming arm mounted on the other side of said cord, resilient means for continuously urging the free end of said pivoted jamming arm in the unwind direction against the other side of said cord to frictionally wedge said cord between said support member and said jamming arm as said cord is pulled out of said housing, said jamming arm pivoting in the rewind direction to unwedge said cord as said cord is retracted into said housing; said rewind means and said variable resistance friction nip means both cooperating to apply force to said cord to oppose an exteriorly applied manual force pulling said cord in the unwind direction, said friction nip means releasing force on said cord, and said rewind means retracting said cord in the rewind direction in the absence of an exteriorly applied manual force on said cord.
  • the exercising device of claim 1 further having means for resiliently urging said support member and said pivoted jamming arm towards each other along a path which is substantially perpendicular to said cord.
  • the exercising device of claim 1 further having means for permitting said support member to move within limits along a path which is substantially parallel to said cord.
  • the exercising device of claim 1 further having means for retaining the free end of said pivoted jamming arm on the rewind side of an imaginary line drawn perpendicular to said cord from the jamming arm pivot point.
  • An exercising device comprising:
  • rewind means for continuously urging said'retractor reel in the rewind direction
  • a capstan mounted within said housing, said capstan being fixed against rotationin the unwind direction in its operative mode;
  • manually adjustable variable resistance friction nip means mounted within said housing between said cord retractor reel and said capstan for applying frictional force to said cord, said friction nip means including a support member contacting one side of said cord, a pivoted jamming arm mounted on the other side of said cord, resilient means for continuously urging the free end of said pivoted jamming arm in the unwind direction against the other side of said cord to frictionally wedge said cord between said support member and said jamming arm as said cord is pulled out of said housing, said jamming arm pivoting in the rewind direction to unwedge said cord as said cord is retracted into said housing;
  • said rewind means, said capstan, and said variable resistance friction nip means all cooperating to apply force to said cord to oppose an exteriorly applied manual force pulling said cord in the unwind direction, said friction nip means releasing'force on said cord, and said rewind means retracting said cord in the rewind direction in the absence of an exteriorly applied manual force on said cord.
  • the exercising device of claim 6 further having means for resiliently urging said support member and said pivoted jamming arm towards each other along a path which is substantially perpendicular to said cord.
  • the exercising device of claim 6 further having means for permitting said support member to move within limits along a path which is substantially parallel to said cord.
  • the exercising device of claim 6 further having means for retaining the free end of said pivoted jamming arm on the rewind side of an imaginary line drawn perpendicular to said cord from the jamming arm pivot point.
  • said retaining means includes a stop mounted in said housing.
  • the exercising device of claim 6 further having manual locking means cooperating with said capstan for selectively locking said capstan against rotation in the unwind direction in the operative mode, and for selectively unlocking said capstan to permit free wheeling in both directions in the inoperative mode;
  • said manual locking means includes a ratcheting mechanism which is engaged in the operative mode.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Rehabilitation Tools (AREA)
US481907A 1974-06-21 1974-06-21 Exercising device Expired - Lifetime US3885789A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US481907A US3885789A (en) 1974-06-21 1974-06-21 Exercising device
US05/579,704 US3995853A (en) 1974-06-21 1975-05-21 Exercising device
DE2526625A DE2526625C2 (de) 1974-06-21 1975-06-14 Übungsvorrichtung für Zugübungen
GB26186/75A GB1509601A (en) 1974-06-21 1975-06-19 Exercising device
CA229,728A CA1021368A (en) 1974-06-21 1975-06-19 Exercising device
JP7507575A JPS5738262B2 (enrdf_load_stackoverflow) 1974-06-21 1975-06-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481907A US3885789A (en) 1974-06-21 1974-06-21 Exercising device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/579,704 Continuation-In-Part US3995853A (en) 1974-06-21 1975-05-21 Exercising device

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US3885789A true US3885789A (en) 1975-05-27

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US481907A Expired - Lifetime US3885789A (en) 1974-06-21 1974-06-21 Exercising device

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US (1) US3885789A (enrdf_load_stackoverflow)
JP (1) JPS5738262B2 (enrdf_load_stackoverflow)
CA (1) CA1021368A (enrdf_load_stackoverflow)
DE (1) DE2526625C2 (enrdf_load_stackoverflow)
GB (1) GB1509601A (enrdf_load_stackoverflow)

Cited By (44)

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US4027876A (en) * 1976-04-07 1977-06-07 Lyman Clarke Johnston Exercising apparatus
US4114875A (en) * 1977-03-29 1978-09-19 Deluty Michael E Friction type exercising device
US4174832A (en) * 1976-11-08 1979-11-20 Thompson Charles W Friction type exercise device
US4284272A (en) * 1978-02-10 1981-08-18 Tekron Licensing B.V. Exercise machines
US4294446A (en) * 1979-07-23 1981-10-13 Ronald E. Useldinger Friction type exercising device with improved friction setting indicator
WO1983002236A1 (en) * 1981-12-30 1983-07-07 Smith, Robert, S. Isometric and isotonic excerciser with variable resistance
US4811946A (en) * 1988-03-18 1989-03-14 Pelczar Stanley J Weight lifting apparatus
US4944511A (en) * 1989-01-23 1990-07-31 Paul S. Francis Adjustable resilient reel exerciser
US5101735A (en) * 1990-08-27 1992-04-07 Williams Matti I Constant tension apparatus and method with eccentric cam to regulate tension
US5109690A (en) * 1989-05-30 1992-05-05 Nippondenso Co., Ltd. Tension apparatus
US5316535A (en) * 1992-09-21 1994-05-31 Ray Bradbury Universal exercise apparatus
US5397288A (en) * 1994-04-14 1995-03-14 Sayre; Cotter W. Resilient exercise device having pair of handles and protective spine
US6063014A (en) * 1999-04-14 2000-05-16 Scoggins; H. Alton Portable exercise device
RU2178720C1 (ru) * 2000-07-31 2002-01-27 Кабардино-Балкарский государственный университет им. Х.М. Бербекова Устройство для тренировки спортсменов
US20040002410A1 (en) * 2002-06-28 2004-01-01 Steinbach John M. Versatile health care apparatus
US7087001B1 (en) 2002-12-24 2006-08-08 Ihli Stephen P Portable handheld exercise apparatus which can be attached to a multiplicity of body parts
US20090036276A1 (en) * 2006-02-28 2009-02-05 Andrew Robert Loach Exercise machine
US20090093350A1 (en) * 2007-10-04 2009-04-09 Henner Jahns Compact and light exercise machine providing variable resistance and variable range of motion
US7591763B1 (en) * 2008-03-07 2009-09-22 Gymflex Fitness, Llc Portable convertible multifunction exercise apparatus and method
US7621856B1 (en) * 2008-09-23 2009-11-24 Keith Gary S Reel mechanism
WO2012156516A2 (en) 2011-05-19 2012-11-22 Andrew Loach Hand-held exercise apparatus and resistance mechanism for exercise apparatus
WO2013004734A3 (de) * 2011-07-04 2013-04-11 Olaf Peters Übungsgerät
US8465401B1 (en) 2009-11-12 2013-06-18 Stephen P. Ihli Portable exercise apparatus and methods
US8523745B1 (en) * 2009-11-12 2013-09-03 Stephen P. Ihli Exercise methods and apparatus
US8556783B1 (en) * 2009-11-12 2013-10-15 Stephen P. Ihli Exercise resistance methods and apparatus
US8556785B1 (en) * 2009-11-12 2013-10-15 Stephen P. Ihli Golf exercise methods and apparatus
US20130296146A1 (en) * 2012-05-01 2013-11-07 Rogers Athletic Company Resistive pull exercise device
US8622879B1 (en) * 2009-11-12 2014-01-07 Stephen P. Ihli Exercise shoe methods and apparatus
ES2526246A1 (es) * 2013-07-02 2015-01-08 Gustavo David CABAGNA Máquina destinada a la musculación que ejerce una resistencia variable y puntual
US20150051056A1 (en) * 2011-12-22 2015-02-19 Harald Scheffer Restraint device, in particular for training purposes
US8998779B1 (en) 2013-03-05 2015-04-07 Stephen P. Ihli Exercise resistance apparatus
CN105056480A (zh) * 2011-07-13 2015-11-18 平衡体公司 健身锻炼设备
US20160346585A1 (en) * 2012-06-18 2016-12-01 Douglas John Habing Hybrid resistance system
CN108392374A (zh) * 2018-04-11 2018-08-14 刘春龙 一种适用于柔性康复手套的电机控制装置
US10343006B2 (en) 2016-06-23 2019-07-09 Spiraflex Inc. Exercise device and preloaded resistance pack
US10398919B2 (en) 2016-04-05 2019-09-03 Mark A. Krull Exercise methods and apparatus
US10512812B2 (en) 2017-04-03 2019-12-24 Mark A. Krull Exercise resistance methods and apparatus
US11141621B2 (en) * 2020-03-02 2021-10-12 T2 Fitness Products, Inc. Combined friction resistance and elastic resistance exercise device
US20210394010A1 (en) * 2018-11-28 2021-12-23 Danish Aerospace Company A/S Multifunctional exercise apparatus
US20220118305A1 (en) * 2020-10-20 2022-04-21 Shenzhen Osmartlink Technology Co., Ltd Smart wall pulley for fitness
US11491363B2 (en) * 2019-03-14 2022-11-08 Expectations, LLC Exercise methods and apparatus
CN116573502A (zh) * 2023-04-28 2023-08-11 上海寅生科技有限公司 一种集线器及健身器
US20230405383A1 (en) * 2022-05-20 2023-12-21 Joshua Young System and method of isometric exercise
US20240033558A1 (en) * 2021-01-21 2024-02-01 BGR Training Limited Exercise equipment

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JPS5630360Y2 (enrdf_load_stackoverflow) * 1977-04-22 1981-07-20
JPS5448769U (enrdf_load_stackoverflow) * 1977-09-09 1979-04-04
JPS5442221A (en) * 1977-09-09 1979-04-04 Takeo Nakayama Sporting implement
JPS5636519Y2 (enrdf_load_stackoverflow) * 1977-10-26 1981-08-28
DE3248665C1 (de) * 1982-12-30 1983-12-22 Dieter C.H. 8201 Hohenthann Brand Transportables Heim-Krafttrainingsgeraet und Zahnrad,insbesondere zur Verwendung in diesem
DE3603440A1 (de) * 1986-02-05 1986-09-18 Lemar Dr.med. 5880 Lüdenscheid Hamidi Uebungsgeraet zur schaffung der koerperlichen voraussetzungen im umgang mit dem laryngoskop
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US4027876A (en) * 1976-04-07 1977-06-07 Lyman Clarke Johnston Exercising apparatus
US4174832A (en) * 1976-11-08 1979-11-20 Thompson Charles W Friction type exercise device
US4114875A (en) * 1977-03-29 1978-09-19 Deluty Michael E Friction type exercising device
US4284272A (en) * 1978-02-10 1981-08-18 Tekron Licensing B.V. Exercise machines
US4294446A (en) * 1979-07-23 1981-10-13 Ronald E. Useldinger Friction type exercising device with improved friction setting indicator
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US4811946A (en) * 1988-03-18 1989-03-14 Pelczar Stanley J Weight lifting apparatus
US4944511A (en) * 1989-01-23 1990-07-31 Paul S. Francis Adjustable resilient reel exerciser
US5109690A (en) * 1989-05-30 1992-05-05 Nippondenso Co., Ltd. Tension apparatus
US5101735A (en) * 1990-08-27 1992-04-07 Williams Matti I Constant tension apparatus and method with eccentric cam to regulate tension
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US5397288A (en) * 1994-04-14 1995-03-14 Sayre; Cotter W. Resilient exercise device having pair of handles and protective spine
US6063014A (en) * 1999-04-14 2000-05-16 Scoggins; H. Alton Portable exercise device
RU2178720C1 (ru) * 2000-07-31 2002-01-27 Кабардино-Балкарский государственный университет им. Х.М. Бербекова Устройство для тренировки спортсменов
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US20090093350A1 (en) * 2007-10-04 2009-04-09 Henner Jahns Compact and light exercise machine providing variable resistance and variable range of motion
US8105214B2 (en) * 2007-10-04 2012-01-31 Henner Jahns Compact and light exercise machine providing variable resistance and variable range of motion
US7591763B1 (en) * 2008-03-07 2009-09-22 Gymflex Fitness, Llc Portable convertible multifunction exercise apparatus and method
US7621856B1 (en) * 2008-09-23 2009-11-24 Keith Gary S Reel mechanism
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US8556785B1 (en) * 2009-11-12 2013-10-15 Stephen P. Ihli Golf exercise methods and apparatus
US8622879B1 (en) * 2009-11-12 2014-01-07 Stephen P. Ihli Exercise shoe methods and apparatus
WO2012156516A2 (en) 2011-05-19 2012-11-22 Andrew Loach Hand-held exercise apparatus and resistance mechanism for exercise apparatus
US9731157B2 (en) * 2011-05-19 2017-08-15 Andrew Loach Hand-held exercise apparatus and resistance mechanism for exercise apparatus
US20140113779A1 (en) * 2011-05-19 2014-04-24 Andrew Loach Hand-held exercise apparatus and resistance mechanism for exercise apparatus
WO2013004734A3 (de) * 2011-07-04 2013-04-11 Olaf Peters Übungsgerät
CN105056480B (zh) * 2011-07-13 2017-07-25 平衡体公司 健身锻炼设备
CN105056480A (zh) * 2011-07-13 2015-11-18 平衡体公司 健身锻炼设备
US20150051056A1 (en) * 2011-12-22 2015-02-19 Harald Scheffer Restraint device, in particular for training purposes
US10046195B2 (en) * 2011-12-22 2018-08-14 Ergo-Fit Gmbh & Co. Kg Restraint device, in particular for training purposes
US9421413B2 (en) * 2012-05-01 2016-08-23 Rogers Athletic Company Resistive pull exercise device
US20130296146A1 (en) * 2012-05-01 2013-11-07 Rogers Athletic Company Resistive pull exercise device
US20160346585A1 (en) * 2012-06-18 2016-12-01 Douglas John Habing Hybrid resistance system
US10166425B2 (en) * 2012-06-18 2019-01-01 Douglas John Habing Hybrid resistance system
US8998779B1 (en) 2013-03-05 2015-04-07 Stephen P. Ihli Exercise resistance apparatus
ES2526246A1 (es) * 2013-07-02 2015-01-08 Gustavo David CABAGNA Máquina destinada a la musculación que ejerce una resistencia variable y puntual
US10398919B2 (en) 2016-04-05 2019-09-03 Mark A. Krull Exercise methods and apparatus
US10343006B2 (en) 2016-06-23 2019-07-09 Spiraflex Inc. Exercise device and preloaded resistance pack
US10512812B2 (en) 2017-04-03 2019-12-24 Mark A. Krull Exercise resistance methods and apparatus
CN108392374A (zh) * 2018-04-11 2018-08-14 刘春龙 一种适用于柔性康复手套的电机控制装置
US20210394010A1 (en) * 2018-11-28 2021-12-23 Danish Aerospace Company A/S Multifunctional exercise apparatus
US11724151B2 (en) * 2018-11-28 2023-08-15 Danish Aerospace Company A/S Multifunctional exercise apparatus
US11491363B2 (en) * 2019-03-14 2022-11-08 Expectations, LLC Exercise methods and apparatus
US11141621B2 (en) * 2020-03-02 2021-10-12 T2 Fitness Products, Inc. Combined friction resistance and elastic resistance exercise device
US20220118305A1 (en) * 2020-10-20 2022-04-21 Shenzhen Osmartlink Technology Co., Ltd Smart wall pulley for fitness
US20240033558A1 (en) * 2021-01-21 2024-02-01 BGR Training Limited Exercise equipment
US20230405383A1 (en) * 2022-05-20 2023-12-21 Joshua Young System and method of isometric exercise
US12268914B2 (en) * 2022-05-20 2025-04-08 Joshua Young System and method of isometric exercise
CN116573502A (zh) * 2023-04-28 2023-08-11 上海寅生科技有限公司 一种集线器及健身器

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DE2526625C2 (de) 1986-07-10
GB1509601A (en) 1978-05-04
CA1021368A (en) 1977-11-22
JPS5116131A (enrdf_load_stackoverflow) 1976-02-09
DE2526625A1 (de) 1976-01-15
JPS5738262B2 (enrdf_load_stackoverflow) 1982-08-14

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