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:
Nov. 13, 2007
Filed:
Jun. 29, 2005
Applicant:
Tat Nin Lui, Hong Kong, HK;
Inventor:
Tat Nin Lui, Hong Kong, HK;
Assignee:
Choon Nang Electrical Appliance Mfy., Ltd., Aberdeen, Hong Kong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23C 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power tool having a body, a tool bit holder protruding from the tool body for holding and rotating a tool bit about an axis of rotation, and an operator for operating the bit holder. The operator includes an annular member rotationally engageable with the bit holder for manual turning to tighten and/or release the bit holder, and a mount mounting the annular member to the tool body for movement between a non-operative position, rotationally disengaged from the bit holder, and an operative position, rotationally engaged with the bit holder.