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:
Feb. 18, 1997
Filed:
May. 11, 1994
Applicant:
Inventor:
Neil G Cheyne, Auckland, NZ;
Assignee:
Fisher & Paykel Limited, Auckland, NZ;
Primary Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
307125 ; 361159 ; 318245 ;
Abstract
A low voltage power supply which uses a low voltage transistor in conjunction with a winding of an electric motor and the high voltage motor commutation transistors. The motor winding is energised by the commutation transistors for example during use of the motor, and the low voltage transistor is used to divert current from the energised motor winding at desired intervals to provide the low voltage power supply. The low voltage supply may be used in an appliance such as a laundry machine for supplying the motor control circuitry and auxiliary devices for example, a drainage pump and water supply control valves.