Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1998-03-10
2000-10-31
Dang, Khanh
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181256, 181272, F01N 110
Patent
active
061387916
ABSTRACT:
A free-standing, compressed, hardened porous, resilient sheath of sound absorbing fibrous material for use in silencer or muffler pipes as the intermediate sound absorbing element between the inner perforated and outer sleeve elements of a three-element pipe is formed by (a) wrapping an uncompressed pad of fibrous material containing a thermo-setting hardening agent around a shaped mandrel having outside surface shape and dimensions conforming the outside surface shape and dimensions of the inner three-element muffler pipe, (b) subjecting the wrapped mandrel and sheath of uncompressed material to a pressure sufficient to conform the outside surface of the compressed pad to the inside surface shape and dimensions of the outer muffler pipe sleeve element, and to a temperature sufficient to set the thermo-setting hardening agent; and (c) removing the mandrel. Three-element muffler pipes comprising the hardened porous sheath, mufflers containing the three-element pipes, and methods for making the hardened porous sheaths, three-element muffler pipes, and mufflers are also disclosed.
REFERENCES:
patent: 2046193 (1936-06-01), Spicer
patent: 4324314 (1982-04-01), Beach et al.
patent: 4513841 (1985-04-01), Shimoji et al.
patent: 4846302 (1989-07-01), Hetherington
patent: 4930597 (1990-06-01), Udell
patent: 5036585 (1991-08-01), Schweinfurth
patent: 5092122 (1992-03-01), Bainbridge
patent: 5109950 (1992-05-01), Lescher
patent: 5162622 (1992-11-01), Malmsten
patent: 5461777 (1995-10-01), Ikeda et al.
patent: 5479706 (1996-01-01), Tamano et al.
patent: 5670756 (1997-09-01), Ohtaka et al.
patent: 5705777 (1998-01-01), Flanigan et al.
patent: 5718045 (1998-02-01), Tsukahara et al.
Bay Industries, Inc.
Dang Khanh
Wilhelm Thomas D.
Winkelman Michael L.
LandOfFree
Muffler sleeve, and method and apparatus for manufacturing same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Muffler sleeve, and method and apparatus for manufacturing same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Muffler sleeve, and method and apparatus for manufacturing same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2041736