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:
Nov. 08, 1983
Filed:
Sep. 08, 1981
Applicant:
Inventors:
Takesada Sasaki, Machida, JP;
Hiroshi Endo, Zama, JP;
Yoshimasa Zama, Sagamihara, JP;
Masahiko Shiraishi, Nakatsu, JP;
Yosinari Miura, Nakatsu, JP;
Masayuki Yamaguchi, Nakatsu, JP;
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138149 ; 138111 ; 138113 ; 138114 ; 60322 ; 181227 ; 181228 ;
Abstract
From the exhaust tube of automobiles the power source sounds and travelling sounds are radiated as noises. A heat-resistant intermediate layer is disposed partly around the inner tube of dual metal tubing and achieves decreases in the radiated noise from the exhaust pipe due to the vibration damping of the inner and outer tubes.