US4509745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weight lifting device
Assignee: Individual
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Filing: 1982-06-18
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Granted: 1985-04-09
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Expires: 2002-06-18
Abstract
Abstract A weight lifting device includes a frame having a weight stack secured to the frame, a force applicator secured to the frame and connected to the weight stack by a hydraulic connector, so that a person, who applies a muscular force to the force applicator, activates the hydraulic connector moves the weight stack and exercises the muscles. The weight stack is connected through a hydraulic system to a force applicator which includes a fluid contained cylinder that has a reciprocating piston that is acted upon by a user to cause fluid to act on and lift a plurality of stacked weight.
Inventors
- 👤 Gregory S. Angsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:06
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/15; A63B21/158; A63B21/06; A63B2225/00; A63B2225/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
A weight lifting device comprising a frame, said frame having secured thereto, a variable weight stack, a force applicator means for moving said variable weight stack, a connecting means for operably connecting said force applicator means to said variable weight stack so that movement of said force applicator means causes movement of a selected portion of said variable stack, wherein: (a) said force applicator means is acted upon by a user during exercise of one or more groups of muscles; (b) said variable weight stack includes a first weight and a second weight, said second weight adjustable and removable attachable to said first weight, said first weight is operably and directly connected to said connecting means: (c) a hydraulic connector forming a part of the connecting means and comprises a hydraulic cylinder operatively connected to said weight stack; and (d) said connecting means including a hydraulic connecting means being connected at one end to said variable weight stack and at the other end to said force applicator means to thereby form a closed hydraulic circuit.
Claim 2
Dependent Claim
175 words
A weight lifting device comprising a frame, said frame having secured thereto, a variable weight stack, a force applicator means for moving said variable weight stack, a connecting means for operably connecting said force applicator means to said variable weight stack so that movement of said force applicator means causes movement of a selected portion of said variable stack, wherein: (a) said force applicator means is acted upon by a user during exercise of one or more groups of muscles; (b) said variable weight stack includes a first weight and a second weight, said second weight adjustable and removable attachable to said first weight, said first weight is operably and directly connected to said connecting means: (c) a hydraulic connector forming a part of the connecting means and comprises a hydraulic cylinder operatively connected to said weight stack; and (d) said connecting means including a hydraulic connecting means being connected at one end to said variable weight stack and at the other end to said force applicator means to thereby form a closed hydraulic circuit.
Claim 3
Dependent Claim
56 words
The weight lifting device of claim 1 wherein said force applicator means further includes a wheel and wherein said force applicator means has a pivot end and a wheel end, further wherein: (a) said pivot end is pivotally secured to a member of said frame; and (b) said wheel end is rotatably secured to said wheel.
Claim 4
Dependent Claim
145 words
The exercise device of claim 2 wherein said force applicator means further includes: (a) a hydraulic cylinder having hydraulic fluid therein; (b) said pivot end being at one end of said hydraulic cylinder; (c) an outlet adjacent said pivot end; (d) said connecting means connected to said outlet; (e) a force rod slideably mounted within said cylinder having a sealing means for separating a fluid chamber from a void chamber within said hydraulic cylinder and being secured at one end of said rod within said cylinder; (f) said wheel end being at the other end of said force rod and outside cylinder; (g) a fluid chamber being within said hydraulic cylinder and positioned between said sealing means and said outlet; and (h) a void chamber being between said sealing means and said wheel end, within said void cylinder is substantially free of said hydraulic fluid.
Claim 5
Dependent Claim
36 words
The weight lifting device of claim 3 wherein said connecting means is secured at the other end thereof to said weight stack to thereby transfer a force applied to said force applicator to said weight stack.
Claim 6
Dependent Claim
116 words
The exercise device of claim 4 wherein said device is used for exercising the frontal thighs or quadriceps of a user, said device further including; (a) a base; (b) a chair supportably secured to said base; (c) said variable weight stack being secured to said base; (d) a base pillar being secured at one end to said base, and having secured at the other end to said chair; (e) a seat and a back for said chair; (f) said other end of said base pillar being adjacent said for a applicator means; and (g) said pivot end of said cylinder being secured to said base pillar between said support pillar and the seat of said chair.
Claim 7
Dependent Claim
104 words
The weight lifting device of claim 5 wherein said force applicator comprises: (a) a force bar secured at one end to said wheel and said force bar being secured at the other end to a foot support; (b) said wheel being rotatably secured in a wheel notch in a front portion of said seat; (c) said wheel end of said for applicator means being secured rotatably to said wheel off-center of said wheel axis; (d) said wheel and said force bar being rotatably mounted with respect to an axle wheel having an axle; and (e) said axle being fixedly mounted within said wheel notch.
Claim 8
Dependent Claim
75 words
The weight lifting device of claim 6 wherein said force bar comprises: (a) a first force piece secured to one side of said wheel; (b) a second force piece secured to the other side of said wheel; (c) said first force piece and said second force piece being parallel and symmetrically positioned with respect to the wheel; and (d) a spacer between said first force piece and said second force piece at a foot support.
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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |