The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2001
Filed:
Sep. 16, 1999
Kouki Fukui, Osaka, JP;
Totaku Industries, Inc., Osaka, JP;
Abstract
There is provided a heat-insulating and noise reducing duct constituted by reinforcing core,, a thick felt layer,, a foamed resin strip layer,and a resin-coating layer,. The reinforcing core,is made of hard polyolefin resin material and wound spirally at predetermined intervals. The thick felt layer,is wound spirally on an outer circumferential surface of the reinforcing core so that adjacent side edge portions of the felt layer,are lapped over or brought into contact with each other, while the shape of the felt layer is retained by the reinforcing core,. The foamed resin strip layer,made of polyolefin resin material and wound spirally on an outer circumferential surface of the felt layer,so that adjacent side edge portions of the foamed resin strip layer,are in abutment against or in tight contact with each other. The resin-coating layer,provided to cover an outer circumferential surface of the foamed resin strip layer,. Accordingly, it is possible to provide a sound-absorbing and heat-insulating duct which is simple, not complicated, in structure, which can achieve both sound-absorbing and heat-insulating functions, which is suitable for use as an air-blow duct, and which is suitable for continuous production so that the duct can be mass-produced inexpensively without requiring any new equipment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile