Silencer and a method for forming and attaching a silencer to a

Details Silencer and a method for forming and attaching a silencer to a Silencer and a method for forming and attaching a silencer to a

1997-06-30

1998-10-13

Dang, Khanh

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181252, E04F 1704

Patent

active

058214739

ABSTRACT:
A method of forming and attaching a silencer to a blower pipe involves a silencer that has an inner pipe with many silencer holes and a sound absorption material extending longitudinally around its outer periphery. The blower pipe may be connected to a blower so that a high speed air stream passe through an interior of the inner pipe. The method has the steps of forming the inner pipe by resilient deformation of a flexible member (such as a pair of thin plates or a helically-formed flexible strip) that has a stress-free length preventing it from inserted into the blower pipe without first being deformed. Then, the resiliently-deformed flexible member is introduced into the blower pipe, and the silencer is attached to the blower pipe using a resilient restoring force that was caused by the resilient deformation.

REFERENCES:
patent: 4421202 (1983-12-01), Hoy
patent: 4508486 (1985-04-01), Tinker
patent: 5479706 (1996-01-01), Tamano et al.
patent: 5718045 (1998-02-01), Tsukahara et al.

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