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. 26, 2022
Filed:
Mar. 08, 2019
Applicant:
Caterpillar Global Mining Europe Gmbh, Lünen, DE;
Inventors:
Assignee:
Caterpillar Global Mining Europe GmbH, Lunen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D 23/26 (2006.01); F15B 3/00 (2006.01); E21D 15/44 (2006.01); E21D 15/45 (2006.01); E21D 23/04 (2006.01);
U.S. Cl.
CPC ...
F15B 3/00 (2013.01); E21D 15/44 (2013.01); E21D 15/45 (2013.01); E21D 23/26 (2013.01); E21D 23/0418 (2013.01); F15B 2211/3057 (2013.01);
Abstract
In a hydraulic shield support system, a plurality of pressure intensifiers are respectively provided for a plurality of hydraulic props. Each pressure intensifier is operated to increase a system pressure to an increased pressure for supplying fluid at the increased pressure to a pressure chamber of the associated hydraulic prop. The plurality of pressure sensors measure the pressures of the fluid supplied to the respective hydraulic props. A control unit sets a plurality of desired pressures for the plurality of hydraulic props, and stops operation of the respective pressure intensifiers when the set desired pressure has been reached.