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:
Nov. 19, 2002
Filed:
Oct. 20, 2000
Applicant:
Inventor:
Michael D. Cummins, Titusville, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 3/00 ;
U.S. Cl.
CPC ...
H02P 3/00 ;
Abstract
An electronic brake system for D.C. motors that utilize an electronic switching device in parallel with the motor upon the removal of a D.C. source. A bias circuit is connected to the switching device to keep it in the OFF condition while the D.C. source is applied to the motor. Upon disconnecting the D.C. source, through another switch, the electronic switching device can also be independently biased to permit the motor to coast. A properly biased FET can be used as the electronic switching device with a voltage limiting device connected from the gate to the source, such as a zener diode.