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. 12, 2005
Filed:
Nov. 07, 2003
Applicant:
Antti Koskimäki, Tampere, FI;
Inventor:
Antti Koskimäki, Tampere, FI;
Assignee:
Sandvik Tamrock Oy, Tampere, FI;
Primary Examiner:
Int. Cl.
CPC ...
B25D009/26 ; E21B044/00 ;
U.S. Cl.
CPC ...
Abstract
A method for controlling the operating cycle of an impact device, and an impact device. Percussion piston position is measured using a sensor () from which the measurement data is transmitted to a control unit () of the impact device, which in turn controls an electrically driven control valve ().