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:
Apr. 10, 2018
Filed:
Feb. 11, 2013
Applicant:
Construction Tools Pc Ab, Kalmar, SE;
Inventor:
Anders Lundgren, Degerhamn, SE;
Assignee:
CONSTRUCTION TOOLS PC AB, Kalmar, SE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B25D 9/20 (2006.01); E21B 1/02 (2006.01); B25D 9/08 (2006.01); E21B 7/02 (2006.01);
U.S. Cl.
CPC ...
E21B 1/02 (2013.01); B25D 9/08 (2013.01); B25D 9/20 (2013.01); E21B 7/025 (2013.01); B25D 2250/351 (2013.01);
Abstract
A slide valve for a hydraulic percussion device. The slide valve includes a transition surface that is arranged to alternately be subjected to a working pressure and a tank pressure to carry out a reciprocating movement when the percussion device is in use. The slide valve includes at least one channel that is open at one end of the slide valve, and at least one displaceable pin that is arranged inside the at least one channel.