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.

Date of Patent:
Feb. 04, 2014

Filed:

Oct. 21, 2010
Applicants:

Jack Barron Aldrich, Glendale, CA (US);

Yoseph Bar-cohen, Seal Beach, CA (US);

Stewart Sherrit, La Crescenta, CA (US);

Mircea Badescu, La Canada Flintridge, CA (US);

Xiaoqi Bao, San Gabriel, CA (US);

James Samson Scott, Torrance, CA (US);

Inventors:

Jack Barron Aldrich, Glendale, CA (US);

Yoseph Bar-Cohen, Seal Beach, CA (US);

Stewart Sherrit, La Crescenta, CA (US);

Mircea Badescu, La Canada Flintridge, CA (US);

Xiaoqi Bao, San Gabriel, CA (US);

James Samson Scott, Torrance, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25D 11/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A percussive augmenter bit includes a connection shaft for mounting the bit onto a rotary drill. In a first modality, an actuator percussively drives the bit, and an electric slip-ring provides power to the actuator while being rotated by the drill. Hammering action from the actuator and rotation from the drill are applied directly to material being drilled. In a second modality, a percussive augmenter includes an actuator that operates as a hammering mechanism that drives a free mass into the bit creating stress pulses that fracture material that is in contact with the bit.


Find Patent Forward Citations

Quick Actions:

Aldrich, Jack. (2014). Percussive augmenter of rotary drills for operating as a rotary-hammer drill (U.S. Patent No. 8640786). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8640786

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