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:
Oct. 15, 2002
Filed:
Sep. 25, 2001
Keith A. Temple, Addison, TX (US);
Lennox Manufacturing Inc., Marshalltown, IA (US);
Abstract
In accordance with the present invention, a method of determining acceptability of a selected condition in a space temperature conditioning system is comprised of the steps of perturbing the system while it is in operation by changing operation of at least one component thereof; sensing a change in a first operating parameter of the system in response to the changing step and generating a control signal in response to the change in the first operating parameter being greater than a predetermined limit; sensing a change in a second operating parameter of the system during a period beginning with the perturbing step and ending with the control signal; comparing the change in the second operating parameter with a reference corresponding to an acceptable condition; and determining acceptability of the selected condition in response to the comparing step. In a preferred embodiment, the method according to the present invention is used to determine acceptability of refrigerant charge level in a space temperature conditioning system.