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:
Mar. 22, 1983
Filed:
Feb. 17, 1981
Applicant:
Inventors:
Richard A Daniel, Lakewood, OH (US);
Ronald J Geil, Vermilion, OH (US);
Assignee:
Gould Inc., Rolling Meadows, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G05B / ;
U.S. Cl.
CPC ...
364400 ; 318685 ; 318696 ; 364130 ; 364174 ;
Abstract
A microprocessor controlled micro-stepping chart drive circuit is disclosed. The invention comprises a step clock system, a micro-processor controller and a motor drive circuit. A speed selector establishes a numerical constant within the controller. This numerical constant is decremented down with each pulse of the step clock. When the counter reaches zero, the motor drive circuit is updated. Therefore, the time between updates of the motor drive circuit is a function of the value of the numerical constant.