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:
Aug. 08, 2017
Filed:
Apr. 03, 2012
Maria Pettersson, Stora Mellösa, SE;
Maria Pettersson, Stora Mellösa, SE;
Atlas Copco Rock Drills AB, Orebro, SE;
Abstract
The invention concerns a hydraulic striking tool for application in rock and/or concrete cutting equipment containing a machine housing () with a cylinder () with a moveably mounted piston () which during operation performs a repetitive forward and backward movement relative to the machine housing () and directly or indirectly strike a rock and/or concrete cutting tool (), and where the piston () includes a driving part () which separates a first () and a second () driving chamber formed between the piston () and the machine housing () and where these driving chambers are arranged to include a pressurized working fluid during operation. The total volume V of the first and second driving chambers is inversely proportional dimensioned to the square of a for the striking tool recommended maximal pressure p, as well as proportional, by a proportionality constant k within the interval 5.3-21.0, to the product of the pistons energy E during the strike against the tool and compression module β of the working fluid.