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:
Oct. 04, 1994
Filed:
Oct. 31, 1991
Applicant:
Inventors:
Steven A Garand, Ranco Cordova, CA (US);
Carl P Daniel, El Dorado Hills, CA (US);
Assignee:
Baxter Diagnostics Inc., Deerfield, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A02P / ;
U.S. Cl.
CPC ...
318696 ; 318685 ;
Abstract
An improved control system for a stepper motor coil includes a flyback circuit that dissipates coil energy slowly while the coil is energized and operated in the chopping mode, while dissipating coil energy rapidly when the coil is switched to its de-energized phase.