Passive muffler for low pass frequencies

Details Passive muffler for low pass frequencies Passive muffler for low pass frequencies

1991-08-29

1993-04-06

Gellner, Michael L.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181264, 181272, F01N 124

Patent

active

052005828

ABSTRACT:
This invention relates to sound attenuating mufflers, and more particularly to sound attenuating mufflers for dampening sound waves of various frequencies above a pre-selected cut-off frequency. Specially positioned acoustical insulation is provided to partially attenuate sound waves of a relatively low frequency. The insulation is carried in a chamber having one dimension of sound wave travel on the order of one-tenth the wavelength of a preselected cutoff frequency above which sound attenuation is desired. An adjacent chamber substantially free of insulation has one dimension of sound wave travel on the order of one-quarter wavelength of the cutoff frequency.

REFERENCES:
patent: 2039800 (1936-05-01), Jack
patent: 2059487 (1936-11-01), Peik
patent: 2311676 (1943-02-01), Maxim
patent: 2326612 (1943-08-01), Bourne
patent: 3109511 (1963-11-01), Slayter et al.
patent: 3175640 (1965-03-01), Matsui
patent: 3556735 (1971-01-01), Epelman
patent: 4074975 (1978-02-01), Tokura et al.
patent: 4523662 (1985-06-01), Tanaka et al.
patent: 4589517 (1986-05-01), Fukuda
patent: 4607721 (1986-08-01), Tanaka et al.
patent: 4607722 (1986-08-01), Tanaka et al.
patent: 4700805 (1987-10-01), Tanaka et al.
"Basic Acoustics and Noise Control" Seminar at Walker Manufacturing, Nov. 6-8, 1989, pp. 32, 33, 34, 37 and 38, by J. Bolton and J. Jones.

Affiliated with

Also associated with

Rating

Passive muffler for low pass frequencies does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Passive muffler for low pass frequencies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passive muffler for low pass frequencies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-538296