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. 04, 1988
Filed:
Nov. 26, 1985
James W Daniels, Kent, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
Ice detection apparatus for use with aircraft having an EIDI solenoid mounted in proximity to the aircraft skin includes a current pulse generator selectively supplying the EIDI solenoid with current pulses of first and second levels, the second level being effective to generate force upon the skin to remove ice from the skin, and the first level being less than the second level. An accelerometer mounted on the interior surface of the skin produces an output signal in response to force imposed on the skin by current pulses of the first level. The output of the accelerometer is a function of both the current pulse level and of the presence of ice. A comparator is provided to generate an output signal indicative of the presence of ice when the accelerometer output signal reaches a predetermined level.