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:
Dec. 10, 1985
Filed:
Nov. 29, 1983
Willy Watermann, Dortmund, DE;
Winfried Hachenberg, Dortmund, DE;
Klockner-Becorit GmbH, Castrop-Rauxel, DE;
Abstract
A shield-type support frame for serving as a face support in underground mining operations having a bottom structure, a one-piece roof cap, at least one hydraulic plunger connecting the bottom structure and the roof cap and two shield elements arranged side by side, which can be adjusted in height separately and which are each pivotally connected to the bottom structure and the roof cap. Joint connections between each shield element and the roof cap permit tilting of the roof cap relative to the shield elements about axes extending in the forward direction. In such a shield-type support frame, the roof cap is guided better in the forward direction and tilting of the roof cap about a vertical axis is prevented by the joint connections between the shield elements and the roof cap each having a hinge connection with two hinge pins of which the one extends in the face length direction and the other in the forward direction, where the roof cap is supported by the hinge pins extending in the forward direction and the shield elements by the hinge pins extending in the face length direction.