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US3845834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor cycle construction
Assignee: Individual
•
Filing: 1971-09-15
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Granted: 1974-11-05
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Expires: 1991-09-15
Abstract
Abstract The motor cycle has an opposed cylinder engine mounted on its frame with the engine cylinders extending along the frame at a substantial angle to the horizontal and with the rear cylinder at a higher level than the front cylinder. Advantageously the engine is mounted so that the crank shaft and gear box are positioned with the output shaft from the gear box adjacent to a suspension pivot for the driven wheel.
Inventors
- 👤 F Sheppard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:38
CPC Classifications
B; B62; B62M; B62M7/00; B62M7/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
206 words
In a motor cycle, the combination comprising a frame having laterally spaced frame members including laterally spaced and downwardly and rearwardly sloped upper longitudinal frame members and laterally spaced lower frame members sloped at a steeper angle than said upper longitudinal frame members and joined forwardly to the forward ends thereof, a saddle mounting at the upper rear part of the said frame, a fuel tank mounted on said laterally spaced upper frame members forwardly of said saddle mounting and having an upwardly recessed bottom wall straddling said upper frame members to present around them a downwardly and rearwardly sloped inverted channel shaped air deflecting duct, an air cooled opposed cylinder internal combustion engine mounted between parts of said frame below and forwardly of said saddle mounting, said engine having its cylinders extending lengthwise of the frame and at a substantial angle to the horizontal with the rear cylinder at a higher level than the front cylinder and at a position lower than and adjacent to the rearward end of said air deflecting duct whereby to receive therefrom a stream of cooling air during forward motion of the motor cycle, and with the front cylinder projecting downwardly and forwardly beyond the said sloped lower frame members.
Claim 2
Dependent Claim
206 words
In a motor cycle, the combination comprising a frame having laterally spaced frame members including laterally spaced and downwardly and rearwardly sloped upper longitudinal frame members and laterally spaced lower frame members sloped at a steeper angle than said upper longitudinal frame members and joined forwardly to the forward ends thereof, a saddle mounting at the upper rear part of the said frame, a fuel tank mounted on said laterally spaced upper frame members forwardly of said saddle mounting and having an upwardly recessed bottom wall straddling said upper frame members to present around them a downwardly and rearwardly sloped inverted channel shaped air deflecting duct, an air cooled opposed cylinder internal combustion engine mounted between parts of said frame below and forwardly of said saddle mounting, said engine having its cylinders extending lengthwise of the frame and at a substantial angle to the horizontal with the rear cylinder at a higher level than the front cylinder and at a position lower than and adjacent to the rearward end of said air deflecting duct whereby to receive therefrom a stream of cooling air during forward motion of the motor cycle, and with the front cylinder projecting downwardly and forwardly beyond the said sloped lower frame members.
Claim 3
Dependent Claim
113 words
A combination as claimed in claim 1 wherein the said frame comprises laterally spaced upstanding rear frame members connecting the rear ends of said lower frame members to the rear ends of said upper longitudinal frame members, gusset plates one at each side of the frame, fixed across the rear ends of said lower frame members and the lower end parts of said upstanding rear frame members, a single bracing member fixed to depend from converging forward parts of said lower frame members, and means anchoring the engine to the frame at three points, namely one on each of the gusset plates and the third at the lower part of said bracing member.
Claim 4
Dependent Claim
61 words
A combination as claimed in claim 2, comprising a gear box connected to the said engine and forming therewith an engine unit and means connecting said engine unit to the said gusset plates and bracing member with the engine unit positioned to extend through the space between the said laterally spaced lower frame members at a position behind the bracing member.
References Cited (Backward Citations)
No citation records indexed.
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 |