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:
Feb. 21, 2012
Filed:
Oct. 04, 2004
Applicant:
Gunnar Christer Hansson, Stockholm, SE;
Inventor:
Gunnar Christer Hansson, Stockholm, SE;
Assignee:
Atlas Copco Tools AB, Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 57/08 (2006.01); E21B 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power tool having a rotation motor coupled to an output shaft () via a reduction gearing (), wherein the reduction gearing () comprises at least one planetary gearing () with a sun gear (), a ring gear (), a planet wheel carrier () supporting two or more planet wheel units () each comprising two axially spaced spur gears () both secured to a spindle () which is rotatively journalled relative to the planet wheel carrier () via a bearing located between the spur gears ().