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:
May. 17, 1977
Filed:
Jun. 25, 1975
Applicant:
Inventor:
Maurice J Epstein, Ardsley, NY (US);
Assignee:
Computer Transceiver Systems, Inc., Paramus, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
318696 ;
Abstract
A source of electric current has a first terminal connected to one end of each of a plurality of phase windings of a stepping motor whose other ends are connected via controllably operable switches to a second terminal of the current source, the switchesare energized in particular sequence and with controllably variable duty cycle signals wherein the duty cycle of the signals controls the power, speed and rotation of the motor.