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:
Feb. 19, 1980
Filed:
Jun. 15, 1978
Applicant:
Inventors:
Shigeo Nakajima, Tokyo, JP;
Masao Tanaka, Tokyo, JP;
Ken Takahashi, Tokyo, JP;
Nobuo Kiyama, Yokohama, JP;
Takao Kanno, Yokohama, JP;
Assignee:
Taiheiyo Engineering Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D / ;
U.S. Cl.
CPC ...
405291 ; 405296 ;
Abstract
A sheltering apparatus for use in the long wall face of mine wherein a plurality of plates are arranged in overlapping manner between a self-advancing support and an adjacent plate, and hung from wires whose ends are fixed to the supports through springs, and an air curtain is fixed at the front open portion of the support, whereby floating dust and falling dusty materials can be repelled from entering the inner space of the supports.