US4456092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise-shielding panel for engine
Assignee: Nissan Motor Co Ltd
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Filing: 1981-09-10
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Granted: 1984-06-26
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Expires: 2001-09-10
Abstract
Abstract A noise-shielding panel comprises a flat section spacedly disposed from the surface of an engine body and formed of a fibrous composite, and a contacting section integral with the flat section and formed of the same fibrous composite as in the flat section. The contacting section is in direct contact with the engine body surface and lower in density of the fibrous composite than the flat section, thereby facilitating production thereof and exhibiting a high noise-shielding effect.
Inventors
- 👤 Takao Kubozuka
- 👤 Naoki Ogawa
- 👤 Hideya Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:28
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/11; F02B77/13; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/82; E04B2001/8263; E04B1/84; E04B2001/8423; E04B2001/8442; E04B2001/8452
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
103 words
A noise-shielding panel for preventing noise radiation from an engine body surface, comprising: a flat section spacedly disposed from the engine body surface and formed of a fibrous composite; and a contacting section integral with said flat section and formed of the same fibrous composite as in said flat section, and contacting section being in direct contact with the engine body surface to support therethrough said flat section spaced from the engine body surface and to maintain a seal between said flat section and the engine body surface, said contacting section being lower in density of the fibrous composite than said flat section.
Claim 2
Dependent Claim
103 words
A noise-shielding panel for preventing noise radiation from an engine body surface, comprising: a flat section spacedly disposed from the engine body surface and formed of a fibrous composite; and a contacting section integral with said flat section and formed of the same fibrous composite as in said flat section, and contacting section being in direct contact with the engine body surface to support therethrough said flat section spaced from the engine body surface and to maintain a seal between said flat section and the engine body surface, said contacting section being lower in density of the fibrous composite than said flat section.
Claim 3
Dependent Claim
24 words
A noise-shielding panel as claimed in claim 1, wherein said flat and contacting sections are formed integrally as one-piece by press-forming said fibrous composite.
Claim 4
Dependent Claim
85 words
A noise-shielding panel as claimed in claim 1, wherein said contacting section includes a sealing portion whose surface is in direct contact with the engine body surface so as to maintain a seal between the peripheral portion of said flat section and the engine body surface, and a boss portion whose surface is in direct contact with the engine body surface so as to maintain a seal between the engine body surface and said flat section around a projection extended from the engine body surface.
Claim 5
Dependent Claim
45 words
A noise-shielding panel as claimed in claim 3, wherein said sealing portion is generally in the shape of a band and formed along the periphery of said flat section to define a sealed space thereinside and between said flat section and the engine body surface.
Claim 6
Dependent Claim
29 words
A noise-shielding panel as claimed in claim 3, wherein said boss portion is generally cylindrical having a through-hole in which said projection from the engine body surface is disposed.
Claim 7
Dependent Claim
45 words
A noise-shielding panel as claimed in claim 1, wherein said fibrous composite includes at least one member selected from the group consisting of wool, polyester fiber, nylon fiber, rock wool fiber, glass wool (glass fiber), alumina fiber, steel wool, carbon fiber, and silicon carbide fiber.
Claim 8
Dependent Claim
29 words
A noise-shielding panel as claimed in claim 6, wherein said fibrous composite includes a thermosetting resin selected from the group consisting of epoxy resin, acrylic resin, and phenol resin.
Claim 9
Dependent Claim
62 words
A noise-shielding panel as claimed in claim 1, further comprising a cover section integral with said contacting section and formed of the same fibrous composite as in said flat section, said cover section being higher in density of the fibrous composite than said contacting section, said cover section being located outside of said contacting section and bent to cover said contacting section.
Claim 10
Dependent Claim
74 words
A noise-shielding panel as claimed in claim 8, further comprising a flange section integral with said cover section and formed of the same fibrous composite as in said flat section, said flange section being higher in density of the fibrous composite than said contacting section, said flange section extending outwardly from said cover section and being in direct contact with the engine body surface to be secured to the engine body surface by bolts.
Claim 11
Dependent Claim
62 words
A noise-shielding panel as recited in claim 3 further comprising a cover section integral with said sealing portion and formed of the same fibrous composite as in said flat section, said cover section being higher in density of the fibrous composite than said contacting section, said cover section being located outside of said sealing portion and bent to cover said sealing portion.
Claim 12
Dependent Claim
74 words
A noise-shielding panel as recited in claim 10 further comprising a flange section integral with said cover section and formed of the same fibrous composite as in said flat section, said flange section being higher in density of the fibrous composite than said contacting section, said flange section extending outwardly from said cover section and being in direct contact with the engine body surface to be secured to the engine body surface by bolts.
Claim 13
Dependent Claim
67 words
A noise-shielding panel as recited in claim 1 wherein: said sealing portion is generally in the shape of a band and formed along the periphery of said flat section to define a sealed space thereinside and between said flat section and the engine body surface, and wherein said boss portion is generally cylindrical having a through-hole in which said projection from the engine body surface is disposed.
Claim 14
Dependent Claim
55 words
A noise-shielding panel as recited in claim 12 wherein said boss section comprises a flange section immediately adjacent said through-hole, said flange section being integral with said boss section and formed of the same fibrous composite as in said flat section, said flange section being higher in density than the remainder of said boss section.
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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) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |