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:
Jan. 29, 2008
Filed:
Jul. 06, 2004
Markku Keskiniva, Tampere, FI;
Jorma Mäki, Mutala, FI;
Mauri Esko, Ikaalinen, FI;
Erkki Ahola, Kangasala, FI;
Aimo Helin, Tampere, FI;
Timo Muuttonen, Siuro, FI;
Markku Keskiniva, Tampere, FI;
Jorma Mäki, Mutala, FI;
Mauri Esko, Ikaalinen, FI;
Erkki Ahola, Kangasala, FI;
Aimo Helin, Tampere, FI;
Timo Muuttonen, Siuro, FI;
Sandvik Mining and Construction Oy, Tampere, FI;
Abstract
A method of generating a stress pulse, and an impact device. In the method, pressure fluid is fed as pressure pulses to a working chamber residing between the frame of the impact device and a tool such that the resulting force presses the tool towards the material to be processed. The impact device comprises a working chamber and device for conveying pressure fluid as pressure pulses thereto such that a force is produced between the frame of the impact device and a tool to press the tool towards the material to be processed.