Patent US3453960A successfully refreshed from Google Patents.
Patent US3741358A successfully refreshed from Google Patents.
US3741358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronizers
Assignee: Automobiles Peugeot SA
•
Filing: 1971-09-20
•
Granted: 1973-06-26
•
Expires: 1991-09-20
Abstract
Abstract A device for synchronizing the driving and driven elements of a change-speed transmission mechanism comprising a hub rigid with the driving shaft, an axially movable sliding member forming an outer ring, a synchromesh ring formed with a tapered friction surface which is rotatably rigid with said hub and adapted to be shifted angularly between two abutment surfaces of said hub and to move axially towards the conjugate tapered surface of a driven loose pinion as a consequence of the axial thrust exerted by said sliding member and of intermediate connecting members engaging on the one hand notches formed in said hub and on the other hand a common groove formed in said sliding member, said elements being radially retractable during the synchronization and consisting of balls adapted to be moved in a manner known per se by the sliding member towards an abutment surface formed on said synchromesh ring in a plane perpendicular to the axis of rotation of said ring.
Inventors
- 👤 R Magnier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:18
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/02; F16D23/04; F16D23/06; F16D2023/0618; F16D2023/0656; F16D2023/0662
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
170 words
Device for synchronizing the driving and driven elements of a change-speed transmission mechanism, which comprises a hub solid with the driving shaft, a sliding member movable axially on said hub, a snychromesh ring provided with a tapered friction surface and rotatably solid with said hub, adapted to be shifted angularly between two abutment surfaces of said hub and to move axially towards the conjugate tapered surface of a driven loose pinion under the influence of the axial thrust exerted on said sliding member and of intermediate connecting elements disposed in notches formed in said hub, said elements engaging a groove of said sliding member and being adapted to recede radially during the synchronization as a consequence of the thrust exerted by said sliding member against an antagonistic effort directed radially against said sliding member, wherein said connecting elements comprise balls which are moved axially by the sliding member towards an abutment surface formed on the synchromesh ring in a plane substantially perpendicular to the axis of rotation of said ring.
Claim 2
Dependent Claim
170 words
Device for synchronizing the driving and driven elements of a change-speed transmission mechanism, which comprises a hub solid with the driving shaft, a sliding member movable axially on said hub, a snychromesh ring provided with a tapered friction surface and rotatably solid with said hub, adapted to be shifted angularly between two abutment surfaces of said hub and to move axially towards the conjugate tapered surface of a driven loose pinion under the influence of the axial thrust exerted on said sliding member and of intermediate connecting elements disposed in notches formed in said hub, said elements engaging a groove of said sliding member and being adapted to recede radially during the synchronization as a consequence of the thrust exerted by said sliding member against an antagonistic effort directed radially against said sliding member, wherein said connecting elements comprise balls which are moved axially by the sliding member towards an abutment surface formed on the synchromesh ring in a plane substantially perpendicular to the axis of rotation of said ring.
Claim 3
Dependent Claim
25 words
Synchronization device according to claim 1, wherein the balls are urged towards the bottom of the groove of said sliding member by a spring force.
Claim 4
Dependent Claim
38 words
Synchronization device according to claim 2 wherein said balls are disposed between two parallel abutment surfaces formed on the registering back surfaces of synchromesh rings of a synchronizer comprising two loose pinions rotatably mounted about a common axis.
Claim 5
Dependent Claim
24 words
Synchronization device according to claim 1 wherein the balls are urged towards the bottom of the grooves of said sliding member by centrifugal force.
Claim 6
Dependent Claim
27 words
Synchronization device according to claim 1 wherein the balls are urged towards the bottom of the groove of said sliding member by a spring and centrifugal force.
References Cited (Backward Citations)
US2046957A
Cited
US2221894A
Cited
US2253578A
Cited
US2410511A
Cited
US2788874A
Cited
US3355909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |