Patent US4467672A successfully refreshed from Google Patents.
US4467672A
Expired / Lapsed
US
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Transmission differential
Assignee: Renault SA
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Filing: 1981-09-17
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Granted: 1984-08-28
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Expires: 2001-09-17
Abstract
Abstract Transmission differential consisting of a case containing two driven bevel sun gears and bevel planet gears driving the latter mounted loose on a planet wheel pin mounted through corresponding holes made in the case, characterized in that the said pin is held in position by means of a circular peg on the end of the differential closing sun wheel assembly which engages with a groove in the said planet wheel pin.
Inventors
- 👤 Jean-Michel Lamy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:16
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/16; F; F16; F16H; F16H48/00; F16H48/06; F16H48/08; F16H2048/082; F16H2048/085; F16H48/38; F16H2048/387; F16H48/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
217 words
A transmission differential comprising: a case assembly mounted for rotation about a main axis and including a case body and a case closure; a first sun wheel assembly mounted in said case body for rotation about said main axis and including a first bevel sun gear and a first axle shaft drivingly connected thereto; a second sun wheel assembly mounted in said case closure for rotation about said main axis and including a second bevel sun gear and a second axle shaft drivingly connected thereto; a single planet gear pin mounted in two opposed through holes provided in said case body in a direction perpendicular to said main axis; two bevel planet gears rotatably mounted on said planet gear pin each in meshing engagement with both said first and said second bevel sun gears; a circular groove defining a bottom wall and two side walls in said planet gear pin; and a circular peg carried by said second sun wheel assembly and having its outer periphery in engagement with said side walls of said planet gear pin, whereby when said case closure is in place on said case body, with said second sun wheel assembly mounted in said case closure, said planet gear pin is prevented from axial movement in said through holes of said case body.
Claim 2
Dependent Claim
217 words
A transmission differential comprising: a case assembly mounted for rotation about a main axis and including a case body and a case closure; a first sun wheel assembly mounted in said case body for rotation about said main axis and including a first bevel sun gear and a first axle shaft drivingly connected thereto; a second sun wheel assembly mounted in said case closure for rotation about said main axis and including a second bevel sun gear and a second axle shaft drivingly connected thereto; a single planet gear pin mounted in two opposed through holes provided in said case body in a direction perpendicular to said main axis; two bevel planet gears rotatably mounted on said planet gear pin each in meshing engagement with both said first and said second bevel sun gears; a circular groove defining a bottom wall and two side walls in said planet gear pin; and a circular peg carried by said second sun wheel assembly and having its outer periphery in engagement with said side walls of said planet gear pin, whereby when said case closure is in place on said case body, with said second sun wheel assembly mounted in said case closure, said planet gear pin is prevented from axial movement in said through holes of said case body.
Claim 3
Dependent Claim
25 words
The transmission differential according to claim 1, wherein the circular peg is on the end of the output shaft of a male closing sun wheel.
Claim 4
Dependent Claim
21 words
The transmission differential according to claim 1, wherein the circular peg is on the end of a female closing sun wheel.
References Cited (Backward Citations)
US1121803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |