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. 04, 2000
Filed:
Apr. 22, 1998
Joshua I Goldberg, Woodbridge, CT (US);
Kenneth D Milkie, Vernon, CT (US);
United Technologies Corporation, Windsor Locks, CT (US);
Abstract
A rotary switch for providing deicing power to the heaters of a helicopter rotor includes a conductive rotor with conductive protrusions located thereon. Conductive fingers are arranged such that a pair of conductive fingers are in electrical communication with a pair of conductive protrusions for a given position of the conductive rotor. The pair of conductive fingers are in electrical communication with the heaters of a helicopter rotor such that if one the pair of electrical fingers fails to make electrical contact with its respective conductive protrusion electrical power is still delivered to the heater.