Patent US4179548A successfully refreshed from Google Patents.
Patent US4084450A successfully refreshed from Google Patents.
US4084450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust washer arrangement for differentials
Assignee: Caterpillar Inc
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Filing: 1976-09-27
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Granted: 1978-04-18
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Expires: 1996-09-27
Abstract
Abstract A differential comprises a housing having a spider mounted therein and four pinion gears rotatably mounted on stub shafts of the spider in a conventional manner. A semi-spherically shaped thrust washer is disposed between an outboard side of each of the pinion gears and the housing and has an elongated slot formed therethrough and disposed entirely within the confines of the thrust washer. A pin is secured to the housing and extends into the slot to anchor the thrust washer relative to the housing.
Inventors
- 👤 William E. Conroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:33
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/06; F16H48/08; F16H2048/082; F16H48/38; F16H2048/387; F16H48/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
A differential comprising a housing, a spider comprising at least one stub shaft mounted on said housing, a pinion gear rotatably mounted on said stub shaft, a thrust washer disposed between an outboard side of said pinion gear and said housing, means defining a closed and elongated slot through said thrust washer, said slot disposed entirely within the confines of said thrust washer and further disposed adjacent to an edge thereof, and a pin having a first end thereof secured to said housing and a second end thereof disposed in the slot defined through said thrust washer.
Claim 2
Dependent Claim
97 words
A differential comprising a housing, a spider comprising at least one stub shaft mounted on said housing, a pinion gear rotatably mounted on said stub shaft, a thrust washer disposed between an outboard side of said pinion gear and said housing, means defining a closed and elongated slot through said thrust washer, said slot disposed entirely within the confines of said thrust washer and further disposed adjacent to an edge thereof, and a pin having a first end thereof secured to said housing and a second end thereof disposed in the slot defined through said thrust washer.
Claim 3
Dependent Claim
27 words
The differential of claim 1 wherein said housing comprises a first part having said pin secured thereon and a second part releasably secured to said first part.
Claim 4
Dependent Claim
43 words
The differential of claim 2 wherein each of the first and second parts of said housing have a face gear rotatably mounted thereon and wherein said pinion gear is intermeshed between the face gears rotatably mounted on said first and second housing parts.
Claim 5
Dependent Claim
33 words
The differential of claim 3 wherein the second end of said pin is disposed within the slot formed through said thrust washer to overlap an edge defining an outer end of said slot.
Claim 6
Dependent Claim
28 words
The differential of claim 1 further comprising means defining grooves between said pinion gear and said thrust washer and on said stub shaft adapted to communicate lubricant therethrough.
Claim 7
Dependent Claim
12 words
The differential of claim 1 wherein said thrust washer is semi-spherically shaped.
Claim 8
Dependent Claim
42 words
The differential of claim 1 wherein said spider has four stub shafts thereon, each of said stub shafts having a said pinion gear rotatably mounted thereon and a thrust washer disposed between an outboard side of each pinion gear and said housing.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |