US3701285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gearing starter
Assignee: DBA SA
•
Filing: 1971-05-25
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Granted: 1972-10-31
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Expires: 1991-05-25
Abstract
Abstract Starter gearing of the positive shift type for an internal combustion engine in which the sleeve has short splines slightly shorter than the half of the length of the sleeve at the end of the latter opposite to the one connected to the free wheel. Adjacent the free wheel an inner cavity is provided in the sleeve the walls of which do not contact the splines when the starter drive assembly is in its released condition. With such an arrangement the engine vibrations cannot cause the advance of the pinion towards the flywheel.
Inventors
- 👤 Pierre Toulier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:47
CPC Classifications
F; F02; F02N; F02N15/00; F02N15/02; F02N15/04; F02N15/06; Y; Y10; Y10T; Y10T74/00; Y10T74/13
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A starter gearing of the positive shift type for an internal combustion engine, comprising a starter drive assembly having a sleeve member adapted to be splined on the shaft of a starter motor and connected to the driving portion of a unidirectional clutch, the driven portion of which is connected to a pinion adapted to mesh with the toothed wheel of the internal combustion engine when said starter drive assembly is moved towards said toothed wheel against spring return means, characterized in that the sleeve member comprises splines on its internal surface at its end portion opposite to the one connected to said clutch and an inner cavity adjacent said clutch having radial and axial dimensions larger than those of the splines of said shaft so that said cavity receives said shaft splines without contact therein when said starter drive assembly is retracted under the action of said spring return means.
Claim 2
Dependent Claim
151 words
A starter gearing of the positive shift type for an internal combustion engine, comprising a starter drive assembly having a sleeve member adapted to be splined on the shaft of a starter motor and connected to the driving portion of a unidirectional clutch, the driven portion of which is connected to a pinion adapted to mesh with the toothed wheel of the internal combustion engine when said starter drive assembly is moved towards said toothed wheel against spring return means, characterized in that the sleeve member comprises splines on its internal surface at its end portion opposite to the one connected to said clutch and an inner cavity adjacent said clutch having radial and axial dimensions larger than those of the splines of said shaft so that said cavity receives said shaft splines without contact therein when said starter drive assembly is retracted under the action of said spring return means.
Claim 3
Dependent Claim
14 words
A starter gearing according to claim 1, characterized in that said splines are helical.
Claim 4
Dependent Claim
31 words
A starter gearing according to claim 2, characterized in that the splines of said sleeve member and shaft are machined at their engaging ends with sloped surfaces favoring the penetration therebetween.
References Cited (Backward Citations)
US3280811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |