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. 11, 1977
Filed:
Mar. 03, 1976
Applicant:
Inventors:
Masao Hujimori, Tokyo, JA;
Shigeo Nakajima, Tokyo, JA;
Ken Takahashi, Tokyo, JA;
Tsunetoshi Ito, Yokohama, JA;
Toshio Shimada, Yokohama, JA;
Hajime Endo, Kushiro, JA;
Nobuo Kiyama, Yokohama, JA;
Assignee:
Taiiheiyo Engineering Incorporated, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D / ;
U.S. Cl.
CPC ...
61 4 / ; 248357 ;
Abstract
A self-advancing support for use in the pit of coal or metal mine designed to support the pit roof after the mining operation by a shearer and having a mechanism for enabling the self-advancing support to be moved without using such means as a truck and a lift, said mechanism being housed within the self-advancing support and/or detached therefrom.