Sound-absorbing composites and shield devices employing same

Details Sound-absorbing composites and shield devices employing same Sound-absorbing composites and shield devices employing same

2005-05-31

2005-05-31

Redman, Jerry (Department: 3634)

Movable or removable closures

Panel with closure feature

With means to accommodate window accessory; e.g.,...

C296S146500

Reexamination Certificate

active

06898901

ABSTRACT:
A sound-absorbing shield device for use in a vehicle door comprises a sheet of sound-absorbing material and a thin sheet of polymer film. A first face of the polymer film is attached to the sound absorbing material and a plurality of apertures extending through the polymer film from the first face thereof to a second face thereof opposite the first face. Each aperture is bounded by a hollow protrusion extending from the second film face, whereby the apertures and protrusions cooperate to form a barrier against moisture or other environmental contamination while admitting acoustic energy therethrough into the sound absorbing material.

REFERENCES:
patent: 4696848 (1987-09-01), Jones et al.
patent: 4865791 (1989-09-01), Ferro et al.
patent: 5312145 (1994-05-01), McNeil
patent: 5560967 (1996-10-01), Isaksen
patent: 5973221 (1999-10-01), Collyer et al.

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