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. 17, 2017
Filed:
Oct. 17, 2012
Applicant:
Hilti Aktiengesellschaft, Schaan, LI;
Inventors:
Alexander Hoop, Schaan, LI;
Michael Wierer, Bludenz, AT;
Albert Binder, Buchs, CH;
Dieter Profunser, Zwischenwasser, AT;
Stefan Battlogg, St. Anton i. M., AT;
Juergen Poesel, Bludenz, AT;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3/00 (2006.01); E21B 17/22 (2006.01); E21B 19/16 (2006.01); E21B 19/18 (2006.01); B25F 5/00 (2006.01); B25B 21/02 (2006.01); F16D 5/00 (2006.01); F16D 37/02 (2006.01); F16D 37/00 (2006.01);
U.S. Cl.
CPC ...
B25F 5/005 (2013.01); B25B 21/02 (2013.01); F16D 5/00 (2013.01); F16D 37/02 (2013.01); F16D 2037/007 (2013.01);
Abstract
A percussion mechanism includes a first shaft and a second shaft. One or more vanes are fastened to the first shaft. The vanes are arranged so as to be rotatable in a chamber of the second shaft. The chamber is filled with a magnetorheological fluid. A magnetic field source on the second shaft generates a magnetic field that is spatially modulated in the circumferential direction inside the chamber.