US4388899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noiseless covers
Assignee: Nissan Motor Co Ltd
•
Filing: 1981-03-18
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Granted: 1983-06-21
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Expires: 2001-03-18
Abstract
Abstract A noiseless cover such as an oil pan, front cover, cylinder head cover and the like for an engine comprises elastic bodies fixed to an engine body of the engine and resiliently abutting against a mid-portion of the cover, thereby preventing surface vibrations of the cover without any troublesome operation for mounting the cover and without any sealing problem.
Inventors
- 👤 Kiyoshi Shimada
- 👤 Naoki Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:56
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/11; F02B77/13; F01; F01M; F01M11/00; F01M11/0004; F01M2011/0008; F01M2011/0054; F02F; F02F7/00; F02F7/0043; F02F7/0053; F02F2007/0056; F02F7/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
50 words
A noiseless cover such as an oil pan, front cover, cylinder head cover and the like mounted with its circumference onto an engine body, said cover comprising an elastic body fixed to part of said engine body and resiliently abutting against a mid-portion of an inner surface of said cover.
Claim 2
Dependent Claim
50 words
A noiseless cover such as an oil pan, front cover, cylinder head cover and the like mounted with its circumference onto an engine body, said cover comprising an elastic body fixed to part of said engine body and resiliently abutting against a mid-portion of an inner surface of said cover.
Claim 3
Dependent Claim
20 words
A noiseless cover as set forth in claim 1, wherein said elastic body is in the form of a bobbin.
Claim 4
Dependent Claim
28 words
A noiseless cover as set forth in claim 2, wherein said elastic body comprises a mounting thread rod to which the bobbin-shaped elastic body is fixed by baking.
Claim 5
Dependent Claim
22 words
A noiseless cover as set forth in claim 1, wherein said elastic body is frusto-conical in section and has a wave-formed bottom.
Claim 6
Dependent Claim
23 words
A noiseless cover as set forth in claim 1, wherein said elastic body is trapezoid in the section and has a wave-formed bottom.
References Cited (Backward Citations)
JPS511630A
Cited
GB2074645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |