Patent US2412331A successfully refreshed from Google Patents.
Patent US4978631A successfully refreshed from Google Patents.
Patent US4498433A successfully refreshed from Google Patents.
US4498433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Member such as an engine cover adjacent to an automotive engine
Assignee: Nissan Motor Co Ltd
•
Filing: 1983-06-20
•
Granted: 1985-02-12
•
Expires: 2003-06-20
Abstract
Abstract A member adjacent to an engine, as an engine cover such as an engine head cover and oil pan and an air cleaner, is made of fiber layers by shaping organic or inorganic fibers mixed with a resin and its crosslinking agent while heating so as to cause a crosslinking reaction, thereby absorbing vibrations transmitted from an engine and remarkably decreasing noises resulting from surface vibrations of the member with the aid of the damping capacity of the fiber layers.
Inventors
- 👤 Naoki Ogawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:14
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/16; F; F02; F02F; F02F7/00; F02F7/006; F05; F05C; F05C2225/00; F05C2225/02; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/237
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
124 words
A noise-reducing member attached to an engine, said member being shaped in the form of a layer and having a flange portion for attachment to said engine, said member being formed from a homogeneous body comprising fibers selected from the group consisting of organic and inorganic fibers, said fibers having been mixed with a resin binder and a crosslinking agent for the binder, and heated to effect cross linking of the crosslinking agent to form said shaped layer; said flange portion only further being impregnated with a synthetic resin, without impregnating the remainder of said member, to form a resulting resin-impregnated hardened flange portion; said member, when attached to the engine through said flange portion, being effective to damp vibrations transmitted from the engine.
Claim 2
Dependent Claim
124 words
A noise-reducing member attached to an engine, said member being shaped in the form of a layer and having a flange portion for attachment to said engine, said member being formed from a homogeneous body comprising fibers selected from the group consisting of organic and inorganic fibers, said fibers having been mixed with a resin binder and a crosslinking agent for the binder, and heated to effect cross linking of the crosslinking agent to form said shaped layer; said flange portion only further being impregnated with a synthetic resin, without impregnating the remainder of said member, to form a resulting resin-impregnated hardened flange portion; said member, when attached to the engine through said flange portion, being effective to damp vibrations transmitted from the engine.
Claim 3
Dependent Claim
25 words
A member as set forth in claim 1, wherein said layer is formed on its surface with depressions and protrusions to increase its surface area.
Claim 4
Dependent Claim
25 words
A member as set forth in claim 1, wherein said layer is locally impregnated with a synthetic resin to form a resulting resin-impregnated hardened layer.
Claim 5
Dependent Claim
30 words
A member as set forth in claim 1, further containing a member selected from the group consisting of metallic wires and synthetic resin wires embedded in said layer as reinforcement.
Claim 6
Dependent Claim
20 words
A member as set forth in claim 1 further comprising a rubber film which covers the surface of said layer.
Claim 7
Dependent Claim
16 words
A member as set forth in claim 5, wherein said rubber film is a NBR film.
Claim 8
Dependent Claim
21 words
A member as set forth in claim 1 further comprising a synthetic resin film which covers the surface of said layer.
Claim 9
Dependent Claim
27 words
A member as set forth in claim 7, wherein said synthetic resin film is selected from the group consisting of a polypropylene film and a polyethylene film.
Claim 10
Dependent Claim
28 words
A member as set forth in claim 1, wherein said resin is selected from the group consisting of acrylic and phenolic resins and said crosslinking agent is formaldehyde.
Claim 11
Dependent Claim
20 words
A member as set forth in claim 9 further comprising a rubber film which covers the surface of said layer.
Claim 12
Dependent Claim
21 words
A member as set forth in claim 9 further comprising a synthetic resin film which covers the surface of said layer.
References Cited (Backward Citations)
GB499667A
Cited
GB791981A
Cited
US3112810A
Cited
US3092203A
Cited
US3697369A
Cited
GB1154363A
Cited
GB1298574A
Cited
US3654012A
Cited
GB1325707A
Cited
GB1330485A
Cited
GB1400447A
Cited
FR2157586A5
Cited
GB1410689A
Cited
GB1426932A
Cited
GB1459301A
Cited
FR2234627A1
Cited
US3957558A
Cited
GB1452654A
Cited
US4048366A
Cited
FR2357504A2
Cited
JPS52103769A
Cited
US4035215A
Cited
US4101003A
Cited
US4194938A
Cited
US4337116A
Cited
EP0070500A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |