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:
Oct. 04, 1983
Filed:
Mar. 20, 1981
Applicant:
Inventors:
Ernst Braun, Essen-Heisingen, DE;
Gert Braun, Essen-Heisingen, DE;
Assignee:
Halbach & Braun, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21C / ;
U.S. Cl.
CPC ...
299 34 ;
Abstract
A planer assembly is disclosed for winning minerals from a mineral face comprising, a planer guide member, at least two planers slidably engaged on the guide member for movement in a travel direction along the face, a hinge interconnecting the two planers for transferring rotational moment applied to the planers and a planer tool holder mounted on each planer which carries a tool. The planer tool holder is positionable at an angle to make a cut of a selected depth with the depth increasing from planer to planer in a direction opposite the travel direction.