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:
Jan. 21, 2003
Filed:
Dec. 15, 2000
Applicant:
Inventors:
Jin Ming Liu, Conflans S/Honorine, FR;
Bruno Hamery, Paris, FR;
Assignee:
Valeo Climatisation, La Verriere, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60H 1/32 ; F25B 4/902 ;
U.S. Cl.
CPC ...
B60H 1/32 ; F25B 4/902 ;
Abstract
A signal value is derived that is representative of the cooling power produced by an air-conditioning evaporator, the signal value being derived from at least one temperature sensor placed in thermal contact with the evaporator, or downstream from it in the cooled airflow, and the signal value is compared with a reference value corresponding to a normal refrigerant-fluid level. A signal value below the reference value indicates a low level of refrigerant-fluid.