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. 20, 2018
Filed:
Apr. 30, 2014
Applicant:
Carrier Corporation, Farmington, CT (US);
Inventors:
Jeffrey P Lothamer, Ft. Wayne, IN (US);
Daniel L Kelly, Ft. Wayne, IN (US);
Assignee:
Carrier Corporation, Jupiter, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01); G01R 31/327 (2006.01); H01H 1/00 (2006.01); H01H 63/00 (2006.01); H01H 47/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/3278 (2013.01); H01H 47/002 (2013.01); H01H 1/00 (2013.01); H01H 63/00 (2013.01); H01H 2047/003 (2013.01); H01H 2203/00 (2013.01);
Abstract
A method for sensing a welded relay contact when breaking both sides of a power line on a HVAC device including the steps: applying a first signal to one of a pair of switching devices; electronically sensing a second signal, with a sensing device, whether the other of said two switching devices is welded closed; and sending a third signal from the sensing device indicative of whether the other of said two switching devices is welded closed.