Patent EP0079253A1 successfully refreshed from Google Patents.
EP0079253A1
Expired / Lapsed
EP
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Vehicle roof liner
Assignee: OFFERTA DI LICENZA AL PUBBLICO
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Filing: 1982-10-04
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Granted: —
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Expires: 2002-10-04
Abstract
Abstract 1. A roof trim having an inner side (2; 12) roughly parallel to the surface (3; 13) of the roof and in which is incorporated at least one hollow body constituting a Helmholtz resonator (R) characterised in that, in the known manner, the trim is formed by a panel (1; 11) formed mainly by a material permeable to sounds and the or each hollow body is defined between the surface of the roof and a zone (5; 17) of the panel whose thickness is reduced so as to form a membrane (5; 6; 17; 18) whose permeability to sounds is lower than that of the material constituting the main part of the panel.
Inventors
- 👤 Jean-Marie Kindt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 11:26
CPC Classifications
B; B60; B60R; B60R13/00; B60R13/08; B60R13/0815; G; G10; G10K; G10K11/00; G10K11/16; G10K11/172
Claims Analysis
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References Cited (Backward Citations)
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