US3845663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle exerciser with work indicator structure
Assignee: Monark Crescent AB
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Filing: 1972-11-06
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Granted: 1974-11-05
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Expires: 1992-11-06
Abstract
Abstract A bicycle exerciser or ergometer has a flywheel which is driven by a pedal crank shaft and is influenced by variable brake power. The pedal crank shaft is also coupled to the input shaft of a variable gear including a setting member for adjusting the gear ratio, which setting member is coupled to a device sensing the brake power. The output shaft of the variable gear is coupled to an instrument which indicates and/or registers the instantaneous effect take-off from a pedaling person and/or the energy delivered by the pedaling person during a certain time. One embodiment of the variable gear comprises an input disc-shaped member, an output rotatable cylindrical member and a ball mounted therebetween on a movable pendulum arm and in frictional contact with both the disc-shaped member and the cylindrical member.
Inventors
- 👤 F Blomberg
- 👤 M Engerstam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:40
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/012; A63B21/015; A61; A61B; A61B5/00; A61B5/22; A61B5/221; A63B21/40; A63B21/4041; A63B21/4049; A63B22/00; A63B22/06; A63B22/0605
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
182 words
A bicycle exerciser or ergometer comprising an input discshaped member rotated by pedaling, an output rotatable cylindrical member, ball means disposed between and in frictional contact with said disc-shaped member and said cylindrical member, said cylindrical member being parallel to the surface of said disc-shaped member which is contacted by said ball means, means for braking the rotation of said disc-shaped member, means responsive to said braking means to move said ball means toward or away from the axis of rotation of said disc-shaped member while maintaining said ball means in frictional contact with said disc-shaped member and with said cylindrical member to rotate said cylindrical member, and means responsive to rotation of said cylindrical member to indicate the work performed to rotate said disc-shaped member against the operation of said braking means, said moving means comprising a pendulum arm mounted for vertical swinging movement about a horizontal axis, means responsive to said braking means to swing said pendulum arm, said pendulum arm having claws at the lower end thereof clasping said ball means but leaving said ball means free to rotate.
Claim 2
Dependent Claim
182 words
A bicycle exerciser or ergometer comprising an input discshaped member rotated by pedaling, an output rotatable cylindrical member, ball means disposed between and in frictional contact with said disc-shaped member and said cylindrical member, said cylindrical member being parallel to the surface of said disc-shaped member which is contacted by said ball means, means for braking the rotation of said disc-shaped member, means responsive to said braking means to move said ball means toward or away from the axis of rotation of said disc-shaped member while maintaining said ball means in frictional contact with said disc-shaped member and with said cylindrical member to rotate said cylindrical member, and means responsive to rotation of said cylindrical member to indicate the work performed to rotate said disc-shaped member against the operation of said braking means, said moving means comprising a pendulum arm mounted for vertical swinging movement about a horizontal axis, means responsive to said braking means to swing said pendulum arm, said pendulum arm having claws at the lower end thereof clasping said ball means but leaving said ball means free to rotate.
Claim 3
Dependent Claim
17 words
A bicycle exerciser or ergometer as claimed in claim 1, said ball means comprising a single ball.
Claim 4
Dependent Claim
30 words
A bicycle exerciser or ergometer as claimed in claim 1, said ball means resting by gravity in a trough defined by and between said disc-shaped member and said cylindrical member.
Claim 5
Dependent Claim
18 words
A bicycle exerciser or ergometer as claimed in claim 1, and a flywheel for rotating said disc-shaped member.
References Cited (Backward Citations)
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US2510973A
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US2602338A
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US3192772A
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US3511097A
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US3643943A
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |