Sound absorbing panel

Details Sound absorbing panel Sound absorbing panel

2005-03-22

2005-03-22

Hsieh, Shih-Yung (Department: 2837)

Acoustics

Sound-modifying means

Sound absorbing panels

C181S284000, C181S286000, C181S291000, C181S292000, C181S294000

Reexamination Certificate

active

06868940

ABSTRACT:
A sound absorbing panel comprising a standoff layer disposed between a back plate and a screen. The standoff layer supports the screen at a standoff distance from the back plate. The standoff distance is substantially equal to ¼ the wavelength of a sound to be absorbed. An alternate embodiment sound absorbing panel includes a felt layer between the standoff layer and the screen. Another alternate embodiment comprises an apertured membrane supported by standoffs at a standoff distance from the back plate. The standoffs could be any appropriate standoff shape including I standoffs, Z standoffs, and angled standoffs. In one alternate embodiment the apertured membrane is a screen. In another alternate embodiment the apertured membrane is a perforated plate.

REFERENCES:
patent: 4425980 (1984-01-01), Miles
patent: 4886696 (1989-12-01), Bainbridge
patent: 5445861 (1995-08-01), Newton et al.
patent: 6209679 (2001-04-01), Hogeboom et al.

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