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:
Oct. 01, 1991
Filed:
Nov. 25, 1987
Hideo Yoshikawa, Tokyo, JP;
Katsuyoshi Takeuchi, Kanagawa, JP;
Masami Shimada, Kanagawa, JP;
Yoshiharu Awaji, Tokyo, JP;
Takashi Ikeda, Tokyo, JP;
Shunsaku Mitsuno, Tokyo, JP;
Showa Denko Kabushiki Kaisha, Tokyo, JP;
Yamato Kogyo Company, Limited, Kanagawa, JP;
Abstract
In order to accomplish the aforementioned and other objects, a resin muffler, according to the invention, is formed of a heat-resistantive synthetic resin having a property of visco-elastic plasticity in a predetermined temperature range. In the visco-elastic temperature range, the motion of the molecular chain segment of the material resin comes to be relaxed to exhibit noise creative pulsating energy dissipation owing to emission as heat energy. Since the resin muffler thus absorbs noise creative energy by dissipation at around the visco-elastic temperature range and transform the energy into the heat energy which may be emitted by radiation.