US3746336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrist exerciser
Assignee: Individual
•
Filing: 1972-02-24
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Granted: 1973-07-17
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Expires: 1992-02-24
Abstract
Abstract An exerciser to be used for reinforcing wrist muscles, which comprises a pair of spaced grips to be grasped by left and right hands, a pair of rod members for connecting at the prescribed constant interspace and supporting the grips in a manner such that they can freely turn about their longitudinal axis, and springs for exerting resilient resistance and restoring force upon turning of the grips.
Inventors
- 👤 K Tanimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:32
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/02; A63B21/023; A63B21/0004; A63B21/00043; A63B23/00; A63B23/035; A63B23/12; A63B23/14; A63B21/00058; A63B21/00069; A63B21/04; A63B21/0407; A63B21/0421; A63B21/0428; A63B21/055
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
164 words
In a wrist reinforcing exerciser having a pair of grips to be grasped by left and right hands, means for connecting at the prescribed interspace and supporting said grips in a manner such that they can freelY turn about their longitudinal axis, and spring means for exerting resilient resistance and restoring force upon turning of the grip, said spring means being tension springs provided between the corresponding ends of the pair of grips and extensible upon turn of the grip, the improvement therein in which each of said grips has an anchoring block fixed thereto at least at one end thereof, each end of said tension springs is anchored to an extended portion of said anchoring block and said grip connecting and supporting means comprise a rectilinear portion and bent end portions, said bent end portions being received wtthin central bores in said anchoring blocks in a manner such that they can freely turn within said centr1l bores but not removable from the bores.
Claim 2
Dependent Claim
164 words
In a wrist reinforcing exerciser having a pair of grips to be grasped by left and right hands, means for connecting at the prescribed interspace and supporting said grips in a manner such that they can freelY turn about their longitudinal axis, and spring means for exerting resilient resistance and restoring force upon turning of the grip, said spring means being tension springs provided between the corresponding ends of the pair of grips and extensible upon turn of the grip, the improvement therein in which each of said grips has an anchoring block fixed thereto at least at one end thereof, each end of said tension springs is anchored to an extended portion of said anchoring block and said grip connecting and supporting means comprise a rectilinear portion and bent end portions, said bent end portions being received wtthin central bores in said anchoring blocks in a manner such that they can freely turn within said centr1l bores but not removable from the bores.
Claim 3
Dependent Claim
180 words
A wrist reinforcing exerciser comprising: a. a pair of grips to be grasped by left and right hands, each of said grips having at each end theeof an anchoring block, said block comprising a main body portion fixed to the associated grip end and provided with a central bore, and an extended portion laterally protruding from said main body toward another grip; b. a pair of rods for connecting at the prescribed interspace and supporting said grips, each of said rods comprising a rectilinear portion and bent end portions, each bend end portion being received within said central bore in said main body of said anchoring block in a manner such that each bent end portion can freely turn within said bore but not removable from the bore; and, c. a pair of tension springs positioned between corresponding ends of each of said grips and anchored at their ends to the respective extended portions of said anchoring block so that said springs can be extended upon turning of said grips and exert resilient resistance and restoring force to the grips.
Claim 4
Dependent Claim
180 words
A wrist reinforcing exerciser comprising: a. a pair of grips to be grasped by left and right hands, each of said grips having at each end theeof an anchoring block, said block comprising a main body portion fixed to the associated grip end and provided with a central bore, and an extended portion laterally protruding from said main body toward another grip; b. a pair of rods for connecting at the prescribed interspace and supporting said grips, each of said rods comprising a rectilinear portion and bent end portions, each bend end portion being received within said central bore in said main body of said anchoring block in a manner such that each bent end portion can freely turn within said bore but not removable from the bore; and, c. a pair of tension springs positioned between corresponding ends of each of said grips and anchored at their ends to the respective extended portions of said anchoring block so that said springs can be extended upon turning of said grips and exert resilient resistance and restoring force to the grips.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |