Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1991-11-26
1993-02-02
Gellner, Michael L.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181266, 181268, 181272, 181273, 181276, F01N 108
Patent
active
051839768
ABSTRACT:
An adjustable sound attenuating device comprised of an elongated outer main shell of a predetermined diameter, with an inlet coupling and an outlet coupling. The device has located within the shell singular or multiple independent baffle components comprised of a solid baffle plate, a perforated baffle plate, an optional perforated baffle plug, and several chambers provided by the baffle components. The solid and perforated baffle plates have a funnel shape to provide for smooth directional flow of exhaust gases. The perforated baffle plate is pierced with a plurality of openings to allow for the flow of the exhaust gases through the chambers. The perforated baffle tube is pierced with inwardly angled louvers spaced equally around the circumference and staggered to follow a spiral path lengthwise around the perimeter of the tube for routing gases through the chambers. The optional perforated baffle plug is pierced with a plurality of partial openings and acts as a wave interference device to contribute to sound attenuation. The baffle components can be arranged in various configurations providing multiple levels of desirable and acceptable sound attenuation without the use of sound absorbing material. The elimination of sound absorging material contributing to a consistent tone throughout the life of the muffler. The use of a basic baffle component for a wide variety of applicable products results in less cost and time necessary for production. Attenuation of sound is made possible in a minimum amount of space without resulting in increased back pressure.
REFERENCES:
patent: 2828830 (1958-04-01), Clark
patent: 3337939 (1967-08-01), Parkinson
patent: 3412825 (1968-11-01), Hall
patent: 4325459 (1982-04-01), Martin
patent: 4416350 (1983-11-01), Hayashi
patent: 5025890 (1991-06-01), Hisashige et al.
Dang Khanh
Gellner Michael L.
LandOfFree
Adjustable sound attenuating device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable sound attenuating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable sound attenuating device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-8134