Patent FR1374817A successfully refreshed from Google Patents.
US4509742A
Expired / Lapsed
US
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Exercise bicycle
Assignee: Schwinn Bicycle and Fitness LP
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Filing: 1983-06-06
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Granted: 1985-04-09
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Expires: 2003-06-06
Abstract
Abstract An exercise bicycle including a flywheel assembly mounted on the driveshaft of an hydraulic pump and a load resistance control mechanism for variably controlling the load resistance on the hydraulic pump. A pressure gauge means is also provided to measure the pressure between the load resistance control mechanism and the hydraulic pump so as to serve as an indicator of work rate input. Each of the handlebars of the exercise bicycle is separately pivotally secured to the frame of the exercise bicycle. A linkage means connects the handlebars to the driveshaft in such manner that the driveshaft may be driven by pivotal movement of the handlebars or rotation of foot pedals mounted to the flywheel assembly.
Inventors
- 👤 Charles F. Cones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:47
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/06; A63B22/0605; A63B22/0002; A63B22/001; A63B2022/0611; A63B2022/0623; A63B21/00; A63B21/008; A63B21/22; A63B21/225; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2164
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
132 words
An exercise bicycle, comprising: a frame; a positive displacement hydraulic pump mounted on said frame, said pump having a pair of inlet/outlet passages and a driveshaft for operating said pump; a pair of foot pedals connected to said driveshaft of said pump for rotating said driveshaft; a load resistance control means operatively connected to said pump for selectively controlling the load resistance on said hydraulic pump and automatically maintaining said load resistance constant at varying speeds of said driveshaft, said control means defining a valve body and valve seat in flow communication with said inlet/outlet passages; and a hydraulic pressure gauge means in fluid communication with said pump and said load resistance control means, said hydraulic pressure gauge means serving to indicate work rate input of an operator actuating said exercise bicycle.
Claim 2
Dependent Claim
132 words
An exercise bicycle, comprising: a frame; a positive displacement hydraulic pump mounted on said frame, said pump having a pair of inlet/outlet passages and a driveshaft for operating said pump; a pair of foot pedals connected to said driveshaft of said pump for rotating said driveshaft; a load resistance control means operatively connected to said pump for selectively controlling the load resistance on said hydraulic pump and automatically maintaining said load resistance constant at varying speeds of said driveshaft, said control means defining a valve body and valve seat in flow communication with said inlet/outlet passages; and a hydraulic pressure gauge means in fluid communication with said pump and said load resistance control means, said hydraulic pressure gauge means serving to indicate work rate input of an operator actuating said exercise bicycle.
Claim 3
Dependent Claim
30 words
The exercise bicycle of claim 1 wherein said load resistance control means includes a spring for adjustably biasing said valve seat in a normally closed position against said valve body.
Claim 4
Dependent Claim
16 words
The exercise bicycle of claim 2 wherein said hydraulic pump is a positive displacement gear pump.
Claim 5
Dependent Claim
38 words
The exercise bicycle of claim 2 and further comprising: a pair of flywheels mounted on said driveshaft on opposite sides of said pump and rotatable with said driveshaft, one of said pedals mounted on each of said flywheels.
Claim 6
Dependent Claim
55 words
The exercise bicycle of claim 1 wherein said frame includes a pair of handlebars separately pivotally secured to said frame, and said exercise bicycle further comprises: a linkage means between each of said pedals and said handlebars, said linkage means permitting said driveshaft to be rotated by pivotal movement of said handlebars in opposite directions.
Claim 7
Dependent Claim
53 words
The exercise bicycle of claim 5 and further comprising: a locking means for rigidly securing said linkage means to said frame thereby rigidly securing said handlebars wherein said linkage means is releasably connected between said pedals and said driveshaft and said frame includes locking means for rigidly securing said handlebars to said frame.
Claim 8
Dependent Claim
28 words
The exercise bicycle of claim 6 wherein the position of said pedals on said flywheels is adjustable in order to vary the diameter of rotation of said pedals.
Claim 9
Dependent Claim
113 words
An exercise bicycle, comprising: a frame including a pair of handlebars separately pivotally secured to said frame and operable in pivoting and stationary modes; a flywheel rotatably mounted on said frame; a pair of foot pedals actuable by an operator to rotate said flywheel; a load resistance control means operatively connected to said flywheel for variably controlling the load resistance on said flywheel; a linkage means releasably linking said flywheel and each of said handlebars, said linkage means for permitting said flywheel to be rotated by pivotal movement of said handlebars; and a locking means for rigidly securing said linkage means to said frame thereby rigidly securing said handlebars in said stationary mode.
Claim 10
Dependent Claim
113 words
An exercise bicycle, comprising: a frame including a pair of handlebars separately pivotally secured to said frame and operable in pivoting and stationary modes; a flywheel rotatably mounted on said frame; a pair of foot pedals actuable by an operator to rotate said flywheel; a load resistance control means operatively connected to said flywheel for variably controlling the load resistance on said flywheel; a linkage means releasably linking said flywheel and each of said handlebars, said linkage means for permitting said flywheel to be rotated by pivotal movement of said handlebars; and a locking means for rigidly securing said linkage means to said frame thereby rigidly securing said handlebars in said stationary mode.
Claim 11
Dependent Claim
18 words
The exercise bicycle of claim 8 wherein said foot pedals are connected to said flywheel and rotatable therewith.
Claim 12
Dependent Claim
47 words
The exercise bicycle of claim 9 and further comprising: a gauge means for indicating work rate input of said operator in operating said exercise bicycle by pivoting said handlebars and rotating said pedals, said gauge means operatively connected between said flywheel and said load resistance control means.
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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) | 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 |