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:
Dec. 23, 1986
Filed:
Apr. 04, 1986
Applicant:
Inventors:
Kainen Watanabe, Tokyo, JP;
Hiroto Yasuhara, Ayase, JP;
Toru Sugiyama, Kunitachi, JP;
Keiji Shimizu, Tokyo, JP;
Yoshihiro Murata, Katano, JP;
Assignees:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Japanese National Railways, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
238159 ; 238-1 ; 264293 ; 264322 ; 338208 ; 219545 ;
Abstract
An improved insulating plate for an insulated rail joint includes a main plate portion made of a thermo-plastic resin, thick portions formed on the main plate portion at its side face contacting a joint plate, and planar heater elements embedded in the thick portions.