US3717338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrist exercising device
Assignee: Individual
•
Filing: 1972-04-17
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Granted: 1973-02-20
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Expires: 1992-04-17
Abstract
Abstract An exerciser for wrists or the like, of two hand grip units provided with adjacent friction surfaces compressed together by spring means, the pressure exerted thereby being adjustable by a threaded rod screwed in one of the units to which a spring is connected; the spring being also connected to an adjusting knob on the other unit whereby spring tension is adjusted by turning the knob to move the rod.
Inventors
- 👤 P Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:59
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/12; A63B23/14; A63B21/00; A63B21/012; A63B21/015
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
An exerciser comprising a pair of hand grip units each having fixedly secured adjacent one end thereof a disc provided with a friction surface engageable with the friction surface of the other unit for resisting turning of the units relative to each other when the surfaces are compressed together, one of said units having an internally screw threaded anchor fixed thereto and the other of said units having an adjusting knob rotatably mounted thereon adjacent the end thereof opposite its friction surface end, and means for maintaining said friction surfaces in engagement under pressure which can be adjusted comprising a threaded rod screwed in said anchor adjacent one end thereof and which is adjustable lengthwise upon turning of said rod in said anchor, a coil spring connected adjacent one end thereof to the opposite end of said rod, the opposite end of said spring being connected to said adjusting knob whereby the spring tension can be adjusted by turning the knob to move the rod.
Claim 2
Dependent Claim
165 words
An exerciser comprising a pair of hand grip units each having fixedly secured adjacent one end thereof a disc provided with a friction surface engageable with the friction surface of the other unit for resisting turning of the units relative to each other when the surfaces are compressed together, one of said units having an internally screw threaded anchor fixed thereto and the other of said units having an adjusting knob rotatably mounted thereon adjacent the end thereof opposite its friction surface end, and means for maintaining said friction surfaces in engagement under pressure which can be adjusted comprising a threaded rod screwed in said anchor adjacent one end thereof and which is adjustable lengthwise upon turning of said rod in said anchor, a coil spring connected adjacent one end thereof to the opposite end of said rod, the opposite end of said spring being connected to said adjusting knob whereby the spring tension can be adjusted by turning the knob to move the rod.
Claim 3
Dependent Claim
165 words
An exerciser comprising a pair of hand grip units each having fixedly secured adjacent one end thereof a disc provided with a friction surface engageable with the friction surface of the other unit for resisting turning of the units relative to each other when the surfaces are compressed together, one of said units having an internally screw threaded anchor fixed thereto and the other of said units having an adjusting knob rotatably mounted thereon adjacent the end thereof opposite its friction surface end, and means for maintaining said friction surfaces in engagement under pressure which can be adjusted comprising a threaded rod screwed in said anchor adjacent one end thereof and which is adjustable lengthwise upon turning of said rod in said anchor, a coil spring connected adjacent one end thereof to the opposite end of said rod, the opposite end of said spring being connected to said adjusting knob whereby the spring tension can be adjusted by turning the knob to move the rod.
Claim 4
Dependent Claim
165 words
An exerciser comprising a pair of hand grip units each having fixedly secured adjacent one end thereof a disc provided with a friction surface engageable with the friction surface of the other unit for resisting turning of the units relative to each other when the surfaces are compressed together, one of said units having an internally screw threaded anchor fixed thereto and the other of said units having an adjusting knob rotatably mounted thereon adjacent the end thereof opposite its friction surface end, and means for maintaining said friction surfaces in engagement under pressure which can be adjusted comprising a threaded rod screwed in said anchor adjacent one end thereof and which is adjustable lengthwise upon turning of said rod in said anchor, a coil spring connected adjacent one end thereof to the opposite end of said rod, the opposite end of said spring being connected to said adjusting knob whereby the spring tension can be adjusted by turning the knob to move the rod.
Claim 5
Dependent Claim
32 words
The exerciser of claim 1 wherein each of the hand grip units comprises a handle and each of the discs is of greater width than the handle to provide enlarged friction surfaces.
Claim 6
Dependent Claim
27 words
The exerciser of claim 1 wherein the coil spring has its ends detachably connected to the rod and knob to enable assembly or disassembly of the exerciser.
Claim 7
Dependent Claim
27 words
The exerciser of claim 3 wherein the ends of the springs are in the form of hooks detachably connected in eyes in the rod and the knob.
Claim 8
Dependent Claim
12 words
The exerciser of claim 1 wherein the friction surfaces are of leather.
Claim 9
Dependent Claim
26 words
The exerciser of claim 1 wherein each hand grip unit comprises a hollow plastic tube and each disc is of plastic material bonded to a tube.
Claim 10
Dependent Claim
26 words
The exerciser of claim 1 wherein at least one of the hand grip units comprises a hollow tube, and the spring is housed in the tube.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |