Patent US3861740A successfully refreshed from Google Patents.
US3861740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saddle position adjusting device for a vehicle such as bicycle
Assignee: Showa Manufacturing Co Ltd
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Filing: 1973-08-20
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Granted: 1975-01-21
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Expires: 1993-08-20
Abstract
Abstract A saddle position adjusting device for a vehicle such as a bicycle comprising means for releasably locking an oil cylinder. The device can be operated when the body-weight of the rider is applied or not applied on the saddle to adjust the height of the saddle.
Inventors
- 👤 Yasutomo Tajima
- 👤 Tsutomu Yasuda
- 👤 Genichi Seki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:18
CPC Classifications
B; B62; B62K; B62K19/00; B62K19/30; B62K19/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
133 words
A saddle position adjusting device for a vehicle, comprising an oil cylinder carrying a saddle at one end and having oil and gas under high-pressure contained therein, the oil cylinder being mounted in frame means of said vehicle by means whereby said cylinder is slidable in the axial direction but not rotatable with respect to said frame means; means including a piston arranged in said cylinder for communicating the oil between the spacEs above and below said piston; means for locking the oil cylinder at a desired position, said locking means including a piston rod of which the lower end is fixed to the frame means; and means for releasing the lock of the oil cylinder, said releasing means being constructed and arranged to permit operation by a rider while on said vehicle.
Claim 2
Dependent Claim
133 words
A saddle position adjusting device for a vehicle, comprising an oil cylinder carrying a saddle at one end and having oil and gas under high-pressure contained therein, the oil cylinder being mounted in frame means of said vehicle by means whereby said cylinder is slidable in the axial direction but not rotatable with respect to said frame means; means including a piston arranged in said cylinder for communicating the oil between the spacEs above and below said piston; means for locking the oil cylinder at a desired position, said locking means including a piston rod of which the lower end is fixed to the frame means; and means for releasing the lock of the oil cylinder, said releasing means being constructed and arranged to permit operation by a rider while on said vehicle.
Claim 3
Dependent Claim
56 words
A saddle position adjusting device according to claim 1, wherein said locking means is a valve which normally closes the oil communicating means by the action of a spring; and said releasing means is a slidable rod which is slidably inserted in the piston rod whereby the top end thereof is in opposition to the valve.
Claim 4
Dependent Claim
71 words
A saddle position adjusting device according to claim 2, wherein the frame means is fixed around the oil cylinder; a cylindrical body is slidably mounted in the upper portion of the frame means; a projection formed on the inner wall surface of said cylindrical body projects into an axial groove formed in the frame means whereby the oil cylinder is axially slidable but not rotatable with respect to the frame means.
Claim 5
Dependent Claim
31 words
A saddle position adjusting device according to claim 2, wherein a free piston is arranged in the upper portion of the oil cylinder to separate the high-pressure gas from the oil.
Claim 6
Dependent Claim
110 words
A saddle position adjusting device according to claim 1, wherein said locking means includes a plurality of annular grooves formed in the outer wall surface of the oil cylinder and a plurality of steel balls arranged whereby said balls engage said annular grooves and recesses formed in the inner wall surface of the cylindrical body which is mounted in the upper portion of the frame means; and said releasing means is a rotatable ring having in its inner wall surface a plurality of recesses for receiving steel balls, the rotatable ring being rotatably mounted around the cylindrical body and biased in the circumferential direction by the action of a spring.
Claim 7
Dependent Claim
64 words
A saddle position adjusting device according to claim 5, wherein the oil cylinder is formed whereby its outer surface has a polygonal cross-section and the cylindrical body is formed in such a manner that its inner surface has a polygonal cross section corresponding to the outer surface of the oil cylinder, whereby the oil cylinder is not rotatable with respect to the cylindrical body.
Claim 8
Dependent Claim
31 words
A saddle position adjusting device according to claim 5, wherein the frame means is fixed to the cylindrical body with a bolt arranged outside the frame pipe at its upper end.
Claim 9
Dependent Claim
29 words
A saddle position adjusting device according to claim 5, wherein the rotatable ring is moved axially by two snap rings arranged around the upper portion of the cylindrical body.
Claim 10
Dependent Claim
114 words
A saddle position adjusting device according to claim 1, wherein said locking means includes a plurality of annular grooves formed in the outer wall surface of the oil cylinder and a plurality of steel balls arranged whereby said balls engage said annular grooves and recesses formed in the inner wall surface of the cylindrical body mounted in the upper portion of the frame means; and said releasing means is a rotatable ring having in its inner wall surface annular grooves for receiving steel balls, the rotatable ring being mounted around the cylindrical body whereby said cylinder is slidable in the axial direction and biased in the axial direction by the action of a spring.
Claim 11
Dependent Claim
52 words
A saddle position adjusting device according to claim 9, wherein an annular groove is formed in the outer wall surface of the slidable ring; and a projection for engagement with the annular groove is formed on a looped lever at its center position, the looped lever being pivoted at its one end.
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) | 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 |