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:
Sep. 01, 1992
Filed:
Jun. 15, 1990
Richard H Frische, Phoenix, AZ (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
Pressure sensor having a silicon diaphragm chip. The diaphragm in the chip is less than 200 mils in diameter and has an ultrasonic resonant frequency that varies with pressure exerted on it. The chip has resistors with values that change with fluctuation of the chip. The changing resistor values are fed to a supporting electronics that detect the resonant frequency of the diaphragm and indicate measurement of the pressure exerted on the diaphragm. The supporting electronics feed back a signal corresponding to the detected resonant frequency for a sensed pressure to a piezoelectric device that drives the diaphragm to sustain its vibration.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile