초록 ▼

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 th

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.

대표청구항 ▼

[ What is claimed is:] [1.] A silencer for use in an interior of a blower pipe though which a high-speed air stream passes, the silencer comprising:an inner pipe, inserted into the interior of the blower pipe, the inner pipe including a flexible member that has a stress-free length preventing it fro

[ What is claimed is:] [1.] A silencer for use in an interior of a blower pipe though which a high-speed air stream passes, the silencer comprising:an inner pipe, inserted into the interior of the blower pipe, the inner pipe including a flexible member that has a stress-free length preventing it from being inserted into the interior of the blower pipe without first being deformed, but which attaches the silencer to the interior of the blower pipe by a resilient restoring force that is caused by a resilient deformation that allowed the inner pipe to be inserted into the interior of the blower pipe, the inner pipe having plural holes; anda sound absorption material extending longitudinally around an outer periphery of the inner pipe.