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. 29, 1996
Filed:
Nov. 07, 1994
Sebastiano Acquaviva, Pino Torinese, IT;
United Technologies Motor Systems, Inc., Columbus, MS (US);
Abstract
A continuous current brushless electric motor is disclosed in which the phases (W1, W2, W3) are energized sequentially, so that a time interval exists in which one phase being deactivated and another phase being activated are both energized with current. During this time interval, the current supplied to the phase being deactivated is decreasing while the current supplied to the phase being activated is increasing. The rate of decrease in the current in the phase being deactivated is controlled to be equal approximately to the difference between a predetermined reference current (Iref) and the increasing current in the phase being activated.