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. 24, 1981
Filed:
Apr. 16, 1979
Applicant:
Inventors:
William R Cobb, Murrysville, PA (US);
Henry P Barthe, Pittsburgh, PA (US);
Assignee:
Schroeder Brothers Corporation, McKees Rocks, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D / ; E21C / ;
U.S. Cl.
CPC ...
405291 ; 173 23 ; 175219 ; 405290 ;
Abstract
A temporary roof support for mounting to a mining vehicle comprising a boom pivotally mounted to the vehicle and positioned in front thereof for rotation in a vertical plane and an extensible standard pivotally mounted to the front of said boom. An extensible hydraulic device secured at one end to the standard and at the other end to the boom adjusts the angular relationship therebetween. A transverse beam is mounted to the top of the standard for restricted angular movement.