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GB2397029A - Transmission for a motorised cycling exerciser - Google Patents

Transmission for a motorised cycling exerciser Download PDF

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Publication number
GB2397029A
GB2397029A GB0300429A GB0300429A GB2397029A GB 2397029 A GB2397029 A GB 2397029A GB 0300429 A GB0300429 A GB 0300429A GB 0300429 A GB0300429 A GB 0300429A GB 2397029 A GB2397029 A GB 2397029A
Authority
GB
United Kingdom
Prior art keywords
gear
shaft
insert
safety member
groove
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.)
Withdrawn
Application number
GB0300429A
Other versions
GB0300429D0 (en
Inventor
Chin-Tsun Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0300429A priority Critical patent/GB2397029A/en
Publication of GB0300429D0 publication Critical patent/GB0300429D0/en
Publication of GB2397029A publication Critical patent/GB2397029A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
    • A63B22/0694—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement without integral seat, e.g. portable mini ergometers being placed in front of a chair, on a table or on a bed
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
    • A61H1/02—Stretching or bending or torsioning apparatus for exercising
    • A61H1/0214—Stretching or bending or torsioning apparatus for exercising by rotating cycling movement
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
    • A63B22/0605—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers
    • 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
    • F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/04—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
    • F16D7/042—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with at least one part moving axially between engagement and disengagement
    • F16D7/044—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with at least one part moving axially between engagement and disengagement the axially moving part being coaxial with the rotation, e.g. a gear with face teeth
    • 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
    • F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/04—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
    • F16D7/042—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with at least one part moving axially between engagement and disengagement
    • F16D7/046—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with at least one part moving axially between engagement and disengagement with a plurality of axially moving parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H15/00—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains
    • A61H2015/0007—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis
    • A61H2015/0014—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis cylinder-like, i.e. rollers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0173—Means for preventing injuries
    • A61H2201/0176—By stopping operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2209/00—Devices for avoiding blood stagnation, e.g. Deep Vein Thrombosis [DVT] devices

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Cardiology (AREA)
  • Vascular Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Rehabilitation Tools (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

An electrical cycling exerciser includes a motor 3, two pedals 2 attached to a shaft 11, a gear 42 mounted to the shaft 11 and an overload clutch 43 to allow the pedals and shaft to slip relative to the gear 42 if the pedals are subject to a force exceeding a safe level. The overload clutch 43 may be received in the gear 42. The clutch 43 includes grooves 45 for locating elastic elements 5 and inserts 6. The gear 42 includes radial insertion grooves 422 for receiving the inserts 6. The inserts 6 are biassed into the insertion grooves 422 allowing the gear 42 and shaft 11 to turn jointly until excessive force is applied to the pedals and the inserts are forced against the biase out of the insertion grooves 422 causing the gear 42 to rotate relative to the shaft 11. The grooves 45 may be placed on the inside surface of the gear 11 (figure 6). The inserts 6 may move along the axil of the shaft (figure 9). The overload clutch may be mounted on shaft 52.

Description

Transmission Device for an Electric Cycling Exerciser
Backaround of the Invention
1. Field of the Invention
The present invention relates to a transmission device for an electric cycling exerciser.
2. Description of the Related Art
Besides poor blood circulation, the body of a person that has sat for hours would become stiff and the person would feel tired. An electric cycling exerciser is provided to exercise the user's legs while the user is sitting or lying down on the floor, thereby improving the blood circulation. Fig. 11 of the drawings illustrates a conventional electric cycling exerciser comprising a motor 1' having an output shaft 11', a gear 2' meshed with the output shaft 11' of the motor 1', and two pedals 3' operably connected to the gear 2'. When the motor 1' is turned on, the pedals 3' are turned. Nevertheless, such an electric cycling exerciser has the following drawbacks. First, when the user's foot has not yet firmly stepped on the respective pedal 3', the user's foot would fall and thus be injured by the turning pedal 3'. The injury is more serious if the foot is stuck, as the motor 1' keeps running. Secondly, if the user's foot steps on the respective pedal 3' with a greater force or drives the respective pedal 3' in a reverse direction, this would feed back to the motor 1' such that the motor 1' could not drive the gear 2' and the respective pedal 3' in a normal condition.
As a result, the temperature of the motor 1' would rise and thus cause damage to the motor 1'.
Summary of the Invention
An object of the present invention is to provide a transmission device for an electric cycling exerciser, the transmission device having a safety member to avoid injury to the user's foot.
In accordance with a first aspect of the invention, an electric cycling exerciser comprises: a housing; a shaft rotatably mounted to the housing; two pedals respectively operably attached to two ends of the shaft; a motor; and a gear rotatably mounted on the shaft and driven by the motor, the gear including a safety member rotatably mounted therein, the safety member being fixed to the shaft to turn therewith, one of the gear and the safety member including at least one groove for receiving an elastic element and an insert, the other of the gear and the safety member including at least one insertion groove for receiving the insert, the insert being biased by the elastic element into said at least one groove, thereby allowing joint rotation of the gear and the shaft; wherein when a user's foot is stuck between a respective pedal and the housing or the respective pedal is subject to a force greater than an engaging force between said at least one insertion groove and the insert, the insert is disengaged from said at least one insertion groove such that the shaft and the safety member are not turned while the gear is being turned.
In accordance with a second aspect of the invention, an electric cycling exerciser comprises: a housing; a first shaft rotatably mounted to the housing; a second shaft rotatably mounted to the housing; two pedals respectively operably attached to two ends of one of the first shaft and the second shaft; a motor; and a gear train including at least a first gear mounted to the first shaft and a second gear mounted to the second shaft, the first gear being meshed with the second gear, one of the first gear and the second gear being driven by the motor; one of the first gear and the second gear including a safety member rotatably mounted therein, the safety member being fixed to an associated one of the first shaft and the second shaft to turn therewith, one of said one of the first gear and the second gear and the safety member including at least one groove for receiving an elastic element and an insert, the other of said one of the first gear and the second gear and the safety member including at least one insertion groove for receiving the insert, the insert being biased by the elastic element into said at least one groove, thereby allowing joint rotation of said one of the first gear and the second gear and an associated one of the first shaft and the second shaft; wherein when a user's foot is stuck between a respective pedal and the housing or the respective pedal is subject to a force greater than an engaging force between said at least one insertion groove and the insert, the insert is disengaged from said at least one insertion groove such that the safety member and an associated one of the first shaft and the second shaft to which the pedals are mounted are not turned.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
Brief Description of the Drawings
Fig. 1 is an exploded perspective view of a cycling exerciser in accordance with the present invention.
Fig. 2 is a perspective view of the cycling exerciser in accordance with the present invention, wherein the housing of the cycling exerciser is shown in phantom lines to show interior of the cycling exerciser.
Fig. 3 is a sectional view of the cycling exerciser in accordance with the present invention.
Fig. 4 is another sectional view of the cycling exerciser in accordance with the present invention.
Fig. 5 is a sectional view similar to Fig. 4, wherein the inserts are disengaged from insertion grooves of the cycling exerciser.
Fig. 6 is a sectional view illustrating another embodiment of the cycling exerciser in accordance with the present invention.
Fig. 7 is a sectional view illustrating a further embodiment of the cycling exerciser in accordance with the present invention.
Fig. 8 is an exploded perspective view illustrating still another embodiment of the cycling exerciser in accordance with the present invention.
Fig. 9 is a sectional view of the cycling exerciser in Fig. 8.
Fig. 10 is a sectional view illustrating yet another embodiment of the cycling exerciser in accordance with the present invention.
Fig. 11 is a sectional view of a conventional electric cycling exerciser.
Detailed Description of the Preferred Embodiments
Referring to Figs. 1 through 3, an electric cycling exerciser in accordance with the present invention generally comprises a housing 1, a pair of pedals 2, a motor 3, and a gear train. A shaft 11 is rotatably mounted to the housing 1 and has two ends to which the pedals 2 are respectively attached through a crank (not labeled) to turn therewith. The motor 3 includes an output shaft 31 for driving the gear train. The output shaft 31 may be in the form of a worm or a threaded rod.
The gear train in this embodiment includes a first gear 41 meshed with the output shaft 31 and a second gear 42. The first gear 41 is rotatably mounted by a shaft 52 to a gear box 50 and includes a reduced portion 44 having a plurality of teeth on an outer periphery thereof. The second gear 42 is rotatably mounted on the shaft 11. The second gear 42 meshes with the reduced portion 44 of the first gear 41. The second gear 42 further includes a central hole 421 for receiving a wheel 43.
The second gear 42 further includes an insertion section. In this embodiment, the second gear 42 has two diametrically disposed insertion grooves 422 in an inner periphery defining the central hole 421 of the second gear 42. The wheel 43 includes a pair of diametrically disposed grooves 45 in an outer periphery thereof, each groove 45 receiving an elastic element 5 and an insert 6 therein. Each elastic element 5 has a first end attached to the wheel 43 and a second end attached to an associated insert 6.
Referring to Fig. 4, each insert 6 is biased by an associated elastic element into an associated insertion groove 422 of the second gear 42. Thus, the wheel 43 is turned together with the second gear 42. As a result, when the motor 3 is turned on, the pedals 2 are turned through transmission by the first gear 41, the second gear 42, and the wheel 43. The user's feet stepping on the pedals 2 are carried and thus exercised.
Referring to Figs. 2 and 5, when the user's foot slips from the respective pedal 2 into a gap "a" between the respective pedal 2 and the housing 1, the wheel 43 cannot turn but the second gear 42 keeps turning. Each insertion 6 is so configured that it is disengaged from the associated insertion groove 422 of the second gear 42 when the wheel 43 cannot turn. Thus, the user's foot would not be injured by the pedal 2 due to continuous running of the motor 3, and the second gear 42 turns idly. The wall defining the insertion groove 422 impinges the respective insert 6 and thus sounds to thereby warn the user. The operation of the motor 3 remains the same, eliminating the risk of damage by high temperature.
In a case that the user's foot exerts a force on the respective pedal 2 greater than the engaging force between the insert 6 and the respective insertion groove 422, the insert 6 is disengaged from the respective insertion groove 422. Again, the second gear 42 turns idly without turning the pedals 2, and damage to the motor 3 is avoided. Again, the wall defining the insertion groove 422 impinges the respective insert 6 and thus warns the user by sounds.
Fig. 6 illustrates another embodiment of the invention, wherein the second gear (now designated by 71) has a wheel 72 received therein. The elastic elements 5 and the inserts 6 are mounted in the second gear 71, and two insertion grooves 721 are defined in the wheel 72. Operation of this embodiment is identical to that of the first embodiment.
Fig. 7 illustrates a further embodiment of the invention, wherein the insertion grooves (now designated by 731) are defined in the first gear (now designated by 73), and a wheel 74 is mounted in the first gear 73. The wheel 74 is connected to the second gear (now designated by 75) to which the pedals 2 are operably attached. The elastic elements 5 and the insertions 6 are mounted in the wheel 74 to cooperate with the insertion grooves 731.
Operation of this embodiment is identical to that of the first embodiment.
Alternatively, the elastic elements 5 and the inserts 6 can be mounted in the first gear 73, and the insertion grooves can be defined in the wheel 74 without adversely affecting its function.
Figs. 8 and 9 illustrate still another embodiment of the invention, wherein the second gear (now designated by 76) has a pair of diametrically disposed insertion grooves 761 provided on a side of the second gear 76. A safety member 77 is securely mounted on the shaft 11 of the cycling exerciser to turn therewith. Two protrusions 771 are diametrically formed on the safety member 77. An elastic element 5 has a first end attached to a respective protrusion 771, and an insert 6 is attached to a second end of the elastic element 5. Operation of this embodiment is similar to that of the above embodiments.
Fig. 10 illustrates yet another embodiment of the invention, wherein the cycling exerciser includes only one gear 78 rotatably mounted on the shaft 11.
The gear 78 includes, e.g., two diametrically disposed insertion grooves 781.
A wheel 79 is mounted in the gear 78 and includes two grooves (not labeled) each receiving an elastic element 5 and an insert 6 therein. The wheel 79 is securely mounted on the shaft 11 to turn therewith. Operation of this embodiment is similar to the above embodiments. Alternatively, the elastic elements 5 and the inserts 6 can be mounted in the gear 78, and the insertion grooves can be defined in the wheel 79 without adversely affecting its function.
The wheels in Figs. 1-7 and Fig. 10 can be deemed as a safety member. The gear train in Figs. 1-9 can be replaced with other gear trains having more than two gears.
Although the invention has been explained in relation to its preferred embodiments, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the invention as hereinafter claimed.

Claims (8)

  1. What is claimed is: 1. An electric cycling exerciser comprising: a
    housing; a shaft rotatably mounted to the housing; two pedals respectively operably attached to two ends of the shaft; a motor; and a gear rotatably mounted on the shaft and driven by the motor, the gear including a safety member rotatably mounted therein, the safety member being fixed to the shaft to turn therewith, one of the gear and the safety member including at least one groove for receiving an elastic element and an insert, the other of the gear and the safety member including at least one insertion groove for receiving the insert, the insert being biased by the elastic element into said at least one groove, thereby allowing joint rotation of the gear and the shaft; wherein when a user's foot is stuck between a respective pedal and the housing or the respective pedal is subject to a force greater than an engaging force between said at least one insertion groove and the insert, the insert is disengaged from said at least one insertion groove such that the shaft and the safety member are not turned while the gear is being turned.
  2. 2. An electric cycling exerciser comprising: a housing; a first shaft rotatably mounted to the housing; a second shaft rotatably mounted to the housing; two pedals respectively operably attached to two ends of one of the first shaft and the second shaft; a motor; and a gear train including at least a first gear mounted to the first shaft and a second gear mounted to the second shaft, the first gear being meshed with the second gear, one of the first gear and the second gear being driven by the motor; one of the first gear and the second gear including a safety member rotatably mounted therein, the safety member being fixed to an associated one of the first shaft and the second shaft to turn therewith, one of said one of the first gear and the second gear and the safety member including at least one groove for receiving an elastic element and an insert, the other of said one of the first gear and the second gear and the safety member including at least one insertion groove for receiving the insert, the insert being biased by the elastic element into said at least one groove, thereby allowing joint rotation of said one of the first gear and the second gear and an associated one of the first shaft and the second shaft; wherein when a user's foot is stuck between a respective pedal and the housing or the respective pedal is subject to a force greater than an engaging force between said at least one insertion groove and the insert, the insert is disengaged from said at least one insertion groove such that the safety member and an associated one of the first shaft and the second shaft to which the pedals are mounted are not turned.
  3. 3. The electric cycling exerciser as claimed in claim 2, wherein the pedals are mounted on the second shaft.
  4. 4. The electric cycling exerciser as claimed in claim 3, wherein said safety member is mounted in the second gear, wherein said at least one groove for receiving the elastic element and the insert is defined in the safety member, and wherein said at least one insertion groove for releasably receiving the insert is defined in the second gear.
  5. 5. The electric cycling exerciser as claimed in claim 4, wherein the second gear includes a central hole for receiving the safety member, with said at least one groove being defined in an inner periphery defining the central hole of the second gear.
  6. 6. The electric cycling exerciser as claimed in claim 4, wherein said at least one insertion groove is formed on a side of the second gear.
  7. 7. The electric cycling exerciser as claimed in claim 3, wherein said safety member is defined in the second gear, wherein said at least one groove for receiving the elastic element and the insert is defined in the second gear, and wherein said at least one insertion groove for releasably receiving the insert is defined in the safety member.
  8. 8. The electric cycling exerciser as claimed in claim 3, wherein said safety member is defined in the first gear, wherein said at least one groove for receiving the elastic element and the insert is defined in the safety member, and wherein said at least one insertion groove for releasably receiving the insert is defined in the first gear.
GB0300429A 2003-01-09 2003-01-09 Transmission for a motorised cycling exerciser Withdrawn GB2397029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0300429A GB2397029A (en) 2003-01-09 2003-01-09 Transmission for a motorised cycling exerciser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0300429A GB2397029A (en) 2003-01-09 2003-01-09 Transmission for a motorised cycling exerciser

Publications (2)

Publication Number Publication Date
GB0300429D0 GB0300429D0 (en) 2003-02-12
GB2397029A true GB2397029A (en) 2004-07-14

Family

ID=9950853

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0300429A Withdrawn GB2397029A (en) 2003-01-09 2003-01-09 Transmission for a motorised cycling exerciser

Country Status (1)

Country Link
GB (1) GB2397029A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102068367A (en) * 2011-02-21 2011-05-25 华中科技大学 Lower limb multi-training mode rehabilitation robot
CN109602579A (en) * 2019-01-18 2019-04-12 宇环智能科技(徐州)有限公司 Four limbs electric rehabilitation training airplane

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113599774A (en) * 2021-09-10 2021-11-05 武义忠 Gynaecology and obstetrics is close indoor crotch exercise equipment in basin and application method thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537672A (en) * 1948-12-31 1951-01-09 David T James Overload release mechanism
US2616416A (en) * 1950-12-06 1952-11-04 John A Gillmeier Power actuated leg exercising device
US3503387A (en) * 1967-08-21 1970-03-31 Jack S Mcallister Physical therapy device
US3688522A (en) * 1969-12-29 1972-09-05 Hilti Ag Overload clutch permitting torque transmission during overload
US3754412A (en) * 1971-09-13 1973-08-28 Standard Register Co Slip clutch drive mechanism
US4587960A (en) * 1981-06-12 1986-05-13 Firma Neubauer GmbH, Mashinenbau Passive leg exercise apparatus
US4717146A (en) * 1983-09-27 1988-01-05 G O Giken Co., Ltd. Rotary health promoting exercise apparatus
US5170676A (en) * 1989-08-25 1992-12-15 General Motors Corporation Torque limiter
DE10122272A1 (en) * 2001-05-08 2002-11-14 Bosch Gmbh Robert Overload clutch for transferring restricted torque from a drive part to a driven part comprises a drive part provided with recesses for receiving springs and balls and having an assembly opening in an axial direction

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537672A (en) * 1948-12-31 1951-01-09 David T James Overload release mechanism
US2616416A (en) * 1950-12-06 1952-11-04 John A Gillmeier Power actuated leg exercising device
US3503387A (en) * 1967-08-21 1970-03-31 Jack S Mcallister Physical therapy device
US3688522A (en) * 1969-12-29 1972-09-05 Hilti Ag Overload clutch permitting torque transmission during overload
US3754412A (en) * 1971-09-13 1973-08-28 Standard Register Co Slip clutch drive mechanism
US4587960A (en) * 1981-06-12 1986-05-13 Firma Neubauer GmbH, Mashinenbau Passive leg exercise apparatus
US4717146A (en) * 1983-09-27 1988-01-05 G O Giken Co., Ltd. Rotary health promoting exercise apparatus
US5170676A (en) * 1989-08-25 1992-12-15 General Motors Corporation Torque limiter
DE10122272A1 (en) * 2001-05-08 2002-11-14 Bosch Gmbh Robert Overload clutch for transferring restricted torque from a drive part to a driven part comprises a drive part provided with recesses for receiving springs and balls and having an assembly opening in an axial direction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102068367A (en) * 2011-02-21 2011-05-25 华中科技大学 Lower limb multi-training mode rehabilitation robot
CN102068367B (en) * 2011-02-21 2013-05-22 华中科技大学 Lower limb multi-training mode rehabilitation robot
CN109602579A (en) * 2019-01-18 2019-04-12 宇环智能科技(徐州)有限公司 Four limbs electric rehabilitation training airplane

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