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. 22, 2019
Filed:
Dec. 20, 2016
Applicant:
Kai LI, Taiyuan, CN;
Inventor:
Kai Li, Taiyuan, CN;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B 49/00 (2006.01); A61B 17/16 (2006.01); A61B 90/00 (2016.01); B25F 5/00 (2006.01);
U.S. Cl.
CPC ...
B23B 49/006 (2013.01); A61B 17/1633 (2013.01); A61B 90/03 (2016.02); A61B 2090/033 (2016.02); A61B 2090/036 (2016.02); B23B 49/005 (2013.01); B23B 2260/136 (2013.01); B25F 5/003 (2013.01); Y10T 408/18 (2015.01); Y10T 408/8925 (2015.01); Y10T 408/99 (2015.01);
Abstract
A depth limiting device for a drill includes a main body, an axial braking structure, and a limited shrinking structure. The axial braking structure is attached to the main body. The limited shrinking structure surrounds a drill rod of the drill, is slidably attached to the main body, and is in a home position or a compressed position. The axial braking structure axially brakes the drill rod such that the drill rod moves together with the depth limiting device. When the drill rod enters into a subject, the limited shrinking structure is pressed against the subject, moves from the home position to the compressed position, and stops the drill rod from entering further into the subject.