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. 09, 2016
Filed:
Aug. 24, 2011
Lei YE, Chongqing, CN;
Jian Zhou, Chongqing, CN;
Hua Feng, Chongqing, CN;
Fei LI, Chongqing, CN;
Hengyang Zhu, Chongqing, CN;
Congxiao LI, Chongqing, CN;
Lei Ye, Chongqing, CN;
Jian Zhou, Chongqing, CN;
Hua Feng, Chongqing, CN;
Fei Li, Chongqing, CN;
Hengyang Zhu, Chongqing, CN;
Congxiao Li, Chongqing, CN;
Chongqing Runze Pharmaceutical Co., Ltd., Chongqing, CN;
Abstract
A drill head locking apparatus and a drill head are provided. The locking apparatus includes a protruding platform having a through hole, a bearing on the inner wall of a small cylinder on the protruding platform, a locking sleeve fitted on the protruding platform, and a protrusion arranged on the upper part of the inner wall of the locking sleeve. The lower part of the inner wall of the locking sleeve is a conical face. A spring is arranged between the bottom face of the conical face and an upper bottom face of the protruding platform. A press plate is connected with a screw thread on the outer wall of the top part of the small cylinder on the protruding platform and presses down on the protrusion. A conical hole is arranged on the wall of the small cylinder and communicates with the through hole of the protruding platform.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile