US4423863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exercising device
Assignee: Individual
•
Filing: 1982-05-12
•
Granted: 1984-01-03
•
Expires: 2002-05-12
Abstract
Abstract A stationary bicycle characterized by a hand operated cranking mechanism for rotating the front wheel and a pedal operated cranking mechanism for rotating the rear wheel. Bearing against each wheel is a pressure roller whereby the drag on each wheel can be incrementally adjusted to suit the desire of the user, thereby assuring proper exercise of the leg and arm muscles.
Inventors
- 👤 Romulo A. Figueroa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:04
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/06; A63B22/0605; A63B22/0002; A63B22/0005; A63B22/001; A63B22/0012; A63B21/00; A63B21/012; A63B21/0125; A63B22/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
An exercising device comprising: a conventional bicycle frame, a front and rear wheel rotatively mounted at the front and rear ends of said frame, respectively, a base frame supporting said bicycle frame in such a manner that said wheels are elevated, pedal operated means for rotating said rear wheel, hand operated means for rotating said front wheel, and incrementally adjustable means for decreasing or increasing the frictional drag on each of said wheels to suit the needs of the exerciser.
Claim 2
Dependent Claim
80 words
An exercising device comprising: a conventional bicycle frame, a front and rear wheel rotatively mounted at the front and rear ends of said frame, respectively, a base frame supporting said bicycle frame in such a manner that said wheels are elevated, pedal operated means for rotating said rear wheel, hand operated means for rotating said front wheel, and incrementally adjustable means for decreasing or increasing the frictional drag on each of said wheels to suit the needs of the exerciser.
Claim 3
Dependent Claim
51 words
An exercising device as claimed in claim 1 wherein said means for rotating said rear wheel consists of a sprocket fixed to the rear wheel axle, a drive sprocket, a crank for rotating said drive sprocket, pedals for operating said crank, and a chain connecting said wheel sprocket and drive sprocket.
Claim 4
Dependent Claim
57 words
An exercising device as claimed in claim 1 wherein said hand operated means for rotating the front wheel comprises an upright post fixed to the front wheel fork, a drive sprocket mounted on top of said post, a hand crank for rotating said drive sprocket, and a chain connecting said drive sprocket to the front wheel sprocket.
Claim 5
Dependent Claim
68 words
An exercising device as in claim 1 wherein said incrementally adjustable means for increasing or decreasing the frictional drag on said wheels comprises a rigid extension and a pressure roller assembly consisting of a housing, a roller, and a screw bearing on said extension, said screw when rotated moves said housing causing the roller to engage the wheel to increase or decrease the frictional drag on the wheel.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |