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. 10, 2006
Filed:
Nov. 12, 2004
Applicant:
Ting-yuan Chen, Taichung Hsien, TW;
Inventor:
Ting-Yuan Chen, Taichung Hsien, TW;
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B25D 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power tool includes a sleeve, two pistons, a converter and a striker. The sleeve includes an axial aperture defined therein, a space communicated with the axial aperture, two grooves defined in the wall of the space and peripheral apertures communicated with the space. Oil flows into and from the space through the peripheral apertures. The pistons are put in the grooves. The converter is provided between the sleeve and the pistons for converting the rotation of the sleeve into rectilinear movement of the pistons. The striker is driven by the pistons.