Patent EP0048494A2 successfully refreshed from Google Patents.
EP0048494A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Noise-shielding panel for engines
Assignee: Nissan Motor Co Ltd
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Filing: 1981-09-22
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Granted: —
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Expires: 2001-09-22
Abstract
Abstract A noise-shielding panel (10) comprises a flat section (14) disposed spaced from the surface (12a) of an engine body (12) and formed of a fibrous composit, and a contacting section (16) integral with the flat section and formed of the same fibrous composite as in the flat section, the contacting section (16) being in direct contact with the engine body surface (12a) and lower in density of the fibrous composite than the flat section, thereby facilitating production thereof, exhibiting high noise-shielding effect.
Inventors
- 👤 Takao Kubozuka
- 👤 Naoki Ogawa
- 👤 Hideya Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 10:04
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: 10
Claim 1
Independent Claim
120 words
A noise-shielding panel (10) for preventing noise radiation from an engine body surface (12a), comprising: a flat section (14) disposed spaced from the engine body surface and formed of a fibrous composite; and a contacting section (16) integral with said flat section and formed of the same fibrous composite as in said flat section, said contacting section (16) being in direct contact with the engine body surface (12a) to support therethrough said flat section (14) on the engine body surface (12a) and to maintain a seal between said flat section (14) and the engine body surface (12a), said contacting section (16) being lower in density of the fibrous composite than said flat section (14). (Figs. 3(4,5), 6, 7 & 8)
Claim 2
Dependent Claim
120 words
A noise-shielding panel (10) for preventing noise radiation from an engine body surface (12a), comprising: a flat section (14) disposed spaced from the engine body surface and formed of a fibrous composite; and a contacting section (16) integral with said flat section and formed of the same fibrous composite as in said flat section, said contacting section (16) being in direct contact with the engine body surface (12a) to support therethrough said flat section (14) on the engine body surface (12a) and to maintain a seal between said flat section (14) and the engine body surface (12a), said contacting section (16) being lower in density of the fibrous composite than said flat section (14). (Figs. 3(4,5), 6, 7 & 8)
Claim 3
Dependent Claim
32 words
A noise-shielding panel as claimed in Claim 1, wherein said flat and contacting sections (14,16) are formed integrally as a one-piece by press-forming said fibrous composite. (Figs. 3(4,5), 6, 7 & 8)
Claim 4
Dependent Claim
102 words
A noise-shielding panel as claimed in Claim 1, wherein said contacting section (16) includes a sealing portion (16a) whose surface is in direct contact with the engine body surface (12a) so as to maintain a seal between the peripheral portion of said flat section (14) and the engine body surface (12a), and a boss portion (16b) whose surface is in direct contact with the engine body surface (12a) so as to maintain a seal between the engine body surface (12a) and said flat section (14) around a projection (20) projected from the engine body surface (12a). (Figs. 3(4,5), 6, 7 & 8)
Claim 5
Dependent Claim
54 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 (S) thereinside and between said flat section (14) and the engine body surface (12a). (Figs. 3(4,5), 6, 7 & 8)
Claim 6
Dependent Claim
39 words
A noise-shielding panel as claimed in Claim 3, wherein said boss portion (16b) is generally cylindrical to have a through-hole (18) in which said projection (20) from the engine body surface is disposed. (Figs. 3(4,5), 6, 7 & 8)
Claim 7
Dependent Claim
51 words
A noise-shielding panel as claimed in Claim 1, . wherein said fibrous composite includes at least one 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. (Figs. 3(4,5), 6, 7 & 8)
Claim 8
Dependent Claim
35 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. (Figs. 3(4,5), 6, 7 & 8)
Claim 9
Dependent Claim
68 words
A noise-shielding panel as claimed in Claim 1, further comprising a cover section (22) integral with said sealing portion (16a) and formed of the same fibrous composite as in said flat section, said cover section (22) being higher in density of the fibrous material than said contacting section, said cover section being located outside of said sealing portion (16a) and bent to cover said sealing portion. (Figs. 3(4,5))
Claim 10
Dependent Claim
83 words
A noise-shielding panel as claimed in Claim 8, further comprising a flange section (24) integral with said cover section and formed of the same fibrous composite as in said flat section, said flange section (24) being high in density of the fibrous composite than said contacting section (16), said flange section (24) extending outwardly from said cover section (22) and being in direct contact with the engine body surface (12a) to be secured to the engine body surface by bolts (26). (Figs. 4(3,5))
References Cited (Backward Citations)
No citation records indexed.
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