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:
Aug. 20, 2013
Filed:
Mar. 30, 2009
Applicants:
J. G. Agop Apkarian, Toronto, CA;
Paul Karam, Toronto, CA;
Don Gardner, Burlington, CA;
Inventors:
Assignee:
Quanser Consulting Inc., Markham, CA;
Primary Examiner:
Int. Cl.
CPC ...
B23B 35/00 (2006.01); B23B 45/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drill assembly and method for reducing plunge of a drill bit upon breaking through a workpiece. The drill assembly contains a motor to advance and retract the drill bit, the motor is controlled by a control unit in a feedback loop to achieve a desired stiffness. The control unit determines when the drill bit breaks through the workpiece and stops or retracts the movement of the drill bit.