US4069882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snowmobile drive assembly
Assignee: First National Bank of Minneapolis
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Filing: 1976-12-17
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Granted: 1978-01-24
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Expires: 1996-12-17
Abstract
Abstract A snowmobile drive assembly includes an engine mounted on a frame by vibration isolation mounts and having an output shaft connected, by means of a flexible coupling, to a first shaft which is rotatably supported on the frame by a first pair of axially spaced bearings. A variable speed primary clutch is mounted on the first shaft between the first pair of bearings and is connected, via a drive belt, to a variable speed secondary clutch mounted on a second shaft disposed parallel to the first shaft and rotatably mounted on the frame by a second pair of bearings.
Inventors
- 👤 Ronald Keith Leonard
- 👤 John E. Hoffman, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:10
CPC Classifications
B; B62; B62M; B62M27/00; B62M27/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
A snowmobile drive assembly, comprising: a support frame; a prime mover having a drive shaft; vibration isolation mounts connecting the prime mover to the frame; first and second parallel shaft means; first and second bearing means respectively rotatably supporting the first and second shaft means on the frame with the first shaft means substantially axially aligned with the drive shaft; variable speed primary and secondary clutches respectively mounted on the first and second shaft means; a drive belt trained about and establishing a driving connection between the clutches; and flexible coupling means including torsional damping means connecting the drive shaft with the first shift means.
Claim 2
Dependent Claim
105 words
A snowmobile drive assembly, comprising: a support frame; a prime mover having a drive shaft; vibration isolation mounts connecting the prime mover to the frame; first and second parallel shaft means; first and second bearing means respectively rotatably supporting the first and second shaft means on the frame with the first shaft means substantially axially aligned with the drive shaft; variable speed primary and secondary clutches respectively mounted on the first and second shaft means; a drive belt trained about and establishing a driving connection between the clutches; and flexible coupling means including torsional damping means connecting the drive shaft with the first shift means.
Claim 3
Dependent Claim
128 words
In a snowmobile drive assembly including an engine mounted on a support frame by vibration isolation mounts and having a drive shaft drivingly connected to a variable speed primary clutch which is in turn drivingly connected, by means of a drive belt, to a variable speed secondary clutch mounted on an output shaft rotatably supported on the support frame in substantial parallel relationship to the drive shaft, the improvement comprising: said drive shaft including a first section emanating from the engine and a second section separate from the first section; said primary clutch being mounted entirely on the second section; bearing means rotatably supporting the second section on the frame; and flexible coupling means including torsional damping means connecting the first and second shaft sections to each other.
Claim 4
Dependent Claim
128 words
In a snowmobile drive assembly including an engine mounted on a support frame by vibration isolation mounts and having a drive shaft drivingly connected to a variable speed primary clutch which is in turn drivingly connected, by means of a drive belt, to a variable speed secondary clutch mounted on an output shaft rotatably supported on the support frame in substantial parallel relationship to the drive shaft, the improvement comprising: said drive shaft including a first section emanating from the engine and a second section separate from the first section; said primary clutch being mounted entirely on the second section; bearing means rotatably supporting the second section on the frame; and flexible coupling means including torsional damping means connecting the first and second shaft sections to each other.
References Cited (Backward Citations)
US3776354A
Cited
US4023635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |