Patent US3861677A successfully refreshed from Google Patents.
US3861677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exercisers
Assignee: Individual
•
Filing: 1973-09-21
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Granted: 1975-01-21
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Expires: 1993-09-21
Abstract
Abstract An exerciser comprising a pair of arms pivotably connected to each other and a fluid pump connected to the arms. This pump comprises a cylinder pivotably connected to one arm and a rod pivotably connected to the other arm. This rod carries a piston projecting into the aforementioned cylinder. The closed end of the piston is provided with at least one stop cock constituting an aperture of restricted cross-sectional area. The exerciser also includes a fluid reservoir located within one of the arms and communicating with the aforesaid aperture.
Inventors
- 👤 N R Wheeldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:13
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/0004; A63B21/008; A63B21/0083; A63B21/40; A63B21/4041; A63B21/4047
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
An exerciser comprising a pair of arms pivotally connected at one end, and a fluid pump connected to the arms, said fluid pump comprising a cylinder pivotably connected to one arm and a rod bearing at its end a piston projecting into the cylinder, the rod being pivotably connected at its other end to the other of the said arms, the blind end of the piston being provided with at least one stop cock constituting an aperture of a restricted cross-sectional area, the stop cock being connected to a fluid reservoir containing fluid and positioned within one of said arms, whereby relative movement between the arms will serve to pump the fluid into, or out of said fluid reservoir through said stop cock constituting said aperture.
Claim 2
Dependent Claim
126 words
An exerciser comprising a pair of arms pivotally connected at one end, and a fluid pump connected to the arms, said fluid pump comprising a cylinder pivotably connected to one arm and a rod bearing at its end a piston projecting into the cylinder, the rod being pivotably connected at its other end to the other of the said arms, the blind end of the piston being provided with at least one stop cock constituting an aperture of a restricted cross-sectional area, the stop cock being connected to a fluid reservoir containing fluid and positioned within one of said arms, whereby relative movement between the arms will serve to pump the fluid into, or out of said fluid reservoir through said stop cock constituting said aperture.
Claim 3
Dependent Claim
22 words
An exerciser as claimed in claim 1 in which a aperture of restricted cross sectional area is of variable cross sectional area.
Claim 4
Dependent Claim
41 words
An exerciser as claimed in claim 1 in which the arm including the reservoir is tubular and the reservoir is defined by the internal wall of the arm and a spring loaded piston movable along the longitudinal axis of the arm.
Claim 5
Dependent Claim
14 words
An exerciser as claimed in claim 1 in which the fluid is an oil.
Claim 6
Dependent Claim
24 words
An exerciser as claimed in claim 1 in which a detachable foot stirrup is provided at the free end of one of the arms.
References Cited (Backward Citations)
US767008A
Cited
US2068578A
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US2132862A
Cited
US2543729A
Cited
US2529347A
Cited
US3638941A
Cited
US3756595A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |