Sound-absorbing element

Details Sound-absorbing element Sound-absorbing element

1983-09-09

1985-11-26

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

181284, 181291, 181293, 428167, 428172, 428178, 428180, B32B 330, E04B 184

Patent

active

045554331

ABSTRACT:
A sound-absorbing element of films has adjacent, cup-shaped recesses in the orm of a grid. The bottom surfaces of the films which are to be exposed to the sound field may be excited into dissipative vibrations when sound is incident thereon. The upper edges of the cup-shaped recesses are jointly covered by another flat material web. The bottom surfaces of the cup-shaped recesses are subdivided into bases by one or more crimp-shaped recesses, the depth of which is appreciably smaller than the depth of the cup-shaped recesses. The sound-absorbing element may be used in building, underground and tunnel construction and in vehicle construction.

REFERENCES:
patent: 2840179 (1958-06-01), Junger
patent: 3124798 (1955-10-01), Zinke
patent: 4241806 (1980-12-01), Metzger
patent: 4425981 (1984-01-01), Kiesewetter et al.

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