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.:

US 9597783 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 21, 2017

Filed:

Jul. 01, 2014
Applicant:

Chervon Intellectual Property Limited, Road Town, VG;

Inventor:

Xiaofeng Zhang, Nanjing, CN;

Assignee:

Chervon (HK) Limited, Wanchai, HK;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B 15/00 (2006.01); B25B 19/00 (2006.01); B25B 21/02 (2006.01); B25B 23/12 (2006.01);
U.S. Cl.
CPC ...
B25B 15/001 (2013.01); B25B 21/02 (2013.01); B25B 23/12 (2013.01);
Abstract

A bit assembly includes a bit for driving a screw, a shank for holding and driving the bit to rotate about a pivot axis wherein the bit is capable of moving relative to the shank in a predetermined range, and a limiting structure formed between the bit and the shank for preventing the bit to move beyond the predetermined range. The bit and the shank are made of different materials and form a sliding connection so that they have a certain buffer space in the axial direction and in the circumferential direction thereby reducing the effect of impacts on the service life of the bit assembly.


Find Patent Forward Citations

Zhang, Xiaofeng. (2017). Bit assembly (U.S. Patent No. 9597783). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9597783

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