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:
Apr. 02, 1985
Filed:
May. 27, 1983
Applicant:
Inventors:
Tsu F Chen, Dresher, PA (US);
Edwin R Phillips, Rosemont, PA (US);
Assignee:
Sperry Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B23Q / ; B23B / ;
U.S. Cl.
CPC ...
29 2 / ; 7386234 ; 408-6 ; 408 16 ; 409134 ;
Abstract
A drilling monitor employs laser optics and an associated signal processing device to provide intelligent control capable of making the optimum decision to maintain hole quality and maximize drill life during the drilling of via holes in a circuit board. Twist angle, bending and temperature of the drill are monitored and the drill motor and/or the board is controlled accordingly in response to present data being compared to preprogrammed acceptable standardized data.