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:
Jun. 25, 2002
Filed:
Mar. 06, 2001
Applicant:
Inventors:
Benjamin Frugier, Paris, FR;
Olivier Colette, Le Mesnil St Denis, FR;
Assignee:
Valeo Climatisation, La Verriere, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 1/06 ;
U.S. Cl.
CPC ...
G05B 1/06 ;
Abstract
A device for control of an electric motor-driven compressor of an air-conditioning circuit has a control circuit and an inverter for applying a variable frequency to the electric motor for motor speed control. The control circuit includes a potentiometer and a controlled switch and enables a normal-operation mode under the control of the potentiometer as well as a degraded-operation mode in which the speed of the electric motor is a minimum, and a safety mode in which the operation of the electric motor is prevented.