US3578122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grooved sintered metal synchromesh ring
Assignee: Automobiles Peugeot SA
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Filing: 1969-03-05
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Granted: 1971-05-11
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Expires: 1989-03-05
Abstract
Abstract Splined synchromesh ring of sintered metal for transmission mechanism wherein relatively narrow splines are disposed in the direction of the generatrices of the inner tapered surface, characterized in that said nonmachined splines are compressioncalibrated and arranged by groups, and that a relatively shallow depression is provided between two adjacent splines of the same group.
Inventors
- 👤 Roger Magnier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:45
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/08; F; F16; F16D; F16D23/00; F16D23/02; F16D23/025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A synchromesh ring of sintered, nonmachined material for transmissions and the like, said ring comprising a conically formed portion, a plurality of integral splines disposed along the generatrices of said conically formed portion, said splines being relatively narrow in width and arranged in groups of splines, and a shallow hollow formed between adjacent splines of each said group, the inner tapered surface of each said spline being formed through a finishing compression calibration operation.
Claim 2
Dependent Claim
74 words
A synchromesh ring of sintered, nonmachined material for transmissions and the like, said ring comprising a conically formed portion, a plurality of integral splines disposed along the generatrices of said conically formed portion, said splines being relatively narrow in width and arranged in groups of splines, and a shallow hollow formed between adjacent splines of each said group, the inner tapered surface of each said spline being formed through a finishing compression calibration operation.
Claim 3
Dependent Claim
53 words
A splined synchromesh ring of sintered metal for transmissions and the like comprising a plurality of relatively narrow, nonmachined splines disposed in the direction of the generatrices of an inner tapered surface, said splines being compression-calibrated and arranged in groups, and a relatively shallow depression provided between adjacent splines of the same group.
Claim 4
Dependent Claim
53 words
A splined synchromesh ring of sintered metal for transmissions and the like comprising a plurality of relatively narrow, nonmachined splines disposed in the direction of the generatrices of an inner tapered surface, said splines being compression-calibrated and arranged in groups, and a relatively shallow depression provided between adjacent splines of the same group.
Claim 5
Dependent Claim
50 words
A splined synchromesh ring according to claim 1, further comprising a groove of relatively considerable cross-sectional area provided between adjacent groups of splines to promote the rapid removal of any oil film when the tapered surfaces of the synchromesh ring and its companion sliding hub are in mutual, torque-transmitting engagement.
Claim 6
Dependent Claim
40 words
A splined synchromesh ring according to claim 1, wherein said splines are limited laterally by inclined faces of which the angle is consistent with the ring material in order to obtain sharp edges after the compression calibration of said splines.
Claim 7
Dependent Claim
40 words
A splined synchromesh ring according to claim 1, wherein the number of splines per group is varied as a function of the sizeability of the materials involved and also of the Grade of the lubricating oils utilized in the mechanism.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |