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:
Jul. 11, 1978
Filed:
Apr. 19, 1977
Applicant:
Inventor:
William Askew, Wakefield, GB;
Assignee:
Dresser Europe, S.A., Brussels, BE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 43 ; 299 32 ; 299 33 ; 173160 ;
Abstract
A conveyor-mounted mining machine incorporates at least two driving units. Each unit comprises a linearly drivable member operatively engaged with a driven wheel coupled by a clutch to a driving wheel drivingly engaged with a stationary part of the conveyor. With the clutch engaged, linear motion of the linearly drivable member imparts rotary drive to the driving wheel so as to propel the machine along the conveyor. The driving units are operated sequentially so that a continuous drive effort acts on the machine.