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:
Dec. 31, 1991
Filed:
Mar. 20, 1986
John T Wilson, La Canada Flintridge, CA (US);
Other;
Abstract
A circuit for recovering electromagnetic energy from multiple windings electrical motor open circuit armature windings when interrupted while contacted through coupled commutator segments by brushes of the two groups. This energy recovery circuit includes, for one group brush, a half bridge circuit composed of a plurality of diodes coupled between the group brush and positive and negative polarity terminals of a DC electrical energy coupling means, and two or more group brushes are so connected. The diodes are arranged to be back-biased until an open circuit armature winding is interrupted as above and thereby induces voltage which forward-biased until an open circuit armature winding is interrupted as above and thereby induces voltage which forward-biases certain diodes of the half bridge circuits coupled to commutator segments coupled to the ends of the interrupted open circuit armature winding, and thereby electromagnetic energy associated with the interrupted open circuit armature winding is recovered as electrical energy and delivered with respective polarity to the electrical terminals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile