Patent US4927678A successfully refreshed from Google Patents.
US4927678A
Expired / Lapsed
US
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Protective bellows particularly for a motor vehicle front wheel drive
Assignee: Products Industriels de l'Ouest (C P I O) Cie
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Filing: 1988-12-01
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Granted: 1990-05-22
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Expires: 2008-12-01
Abstract
Abstract Disclosed is a protective bellows of polymer material of the thermoplastic, silicon, etc. type, particularly for a motor vehicle front wheel drive. It has a profile which includes a conical part (5) fastened to the bowl (3) of the transmission, extended on the opposite side by a cylindrical part (7) whose free end is fixed with the wheel side of the drive shaft (4).
Inventors
- 👤 Serge Lallement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:55
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/04; F16J3/041; F16D; F16D3/00; F16D3/84; F16D3/843; F16D3/845; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
68 words
A protective bellows made of polymer material for a motor vehicle front wheel drive having a transmission with a bowl and a drive shaft, which comprises: a conical part to be fastened to said bowl of said transmission; and a cylindrical part having a substantially uniform diameter connected with said conical part wherein said cylindrical part includes a plurality of folds positioned along the length of said cylinder.
Claim 2
Dependent Claim
68 words
A protective bellows made of polymer material for a motor vehicle front wheel drive having a transmission with a bowl and a drive shaft, which comprises: a conical part to be fastened to said bowl of said transmission; and a cylindrical part having a substantially uniform diameter connected with said conical part wherein said cylindrical part includes a plurality of folds positioned along the length of said cylinder.
Claim 3
Dependent Claim
28 words
A protective bellows according to claim 1, wherein an inside diameter dimension of the cylindrical part does not exceed 4 mm greater than the diameter of the shaft.
Claim 4
Dependent Claim
21 words
A protective bellows according to claim 1, wherein an inside part of the cylinder has guide lugs for engaging said shaft.
Claim 5
Dependent Claim
29 words
A protective bellows according to claim 1, which comprises a junction between the conical part and the cylindrical part and which includes a fold which constitutes an articulated zone.
Claim 6
Dependent Claim
16 words
A protective bellows according to claim 1, wherein the conical part includes a circular protective boss.
Claim 7
Dependent Claim
21 words
A protective bellows according to claim 1, wherein the conical part includes a rib forming a protective member having local rigidity.
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) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |