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:
Sep. 27, 1988
Filed:
Aug. 07, 1987
Willy Watermann, Dortmund, DE;
Heinz-Gerd Schlutz, Marl, DE;
Klockner-Becorit GmbH, Castrop-Rauxel, DE;
Abstract
A roof cap assembly of a roof support mechanism includes a main cap having extension bearing portions at its front end, a forward cap which is pivotally attached at its rear end to the extension bearing portions of the main cap, and two supporting cylinders connected between the main cap and the forward cap at spaced apart locations across their widths and so as not to extend therebelow. The supporting cylinders include a housing containing twin pistons and an adjustable pressure transmitter is provided for each supporting cylinder and is constructed to increase the pressure in the pressure chambers therein when the pressure of the pressure medium supplied thereto exceeds a minimum set value.