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. 11, 1980
Filed:
May. 24, 1979
Applicant:
Inventor:
Alfred A Valantin, Clermont, FR;
Assignee:
Charbonnages de France, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ; B22D / ;
U.S. Cl.
CPC ...
305 16 ; 305 44 ; 305 56 ;
Abstract
A machine carriage, for example for a mine roof support, has a beam with rounded ends around which an articulated track runs in a guide path which defines lateral clearance at each side of the track on the straight part of the path. The track is guided without play around the rounded ends of the beam.