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:
Jun. 02, 2020
Filed:
Dec. 07, 2011
Applicants:
Heikki Seppa, Vtt, FI;
Teuvo Sillanpaa, Vtt, FI;
Ville Viikari, Vtt, FI;
Inventors:
Assignee:
Teknologian tutkimuskeskus VTT Oy, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B06B 1/02 (2006.01); H04B 11/00 (2006.01); G01D 21/00 (2006.01); G01L 9/00 (2006.01); G01L 11/06 (2006.01); G01P 15/08 (2006.01); G01P 15/125 (2006.01); G01L 19/08 (2006.01);
U.S. Cl.
CPC ...
H04B 11/00 (2013.01); B06B 1/0292 (2013.01); G01D 21/00 (2013.01); G01L 9/0016 (2013.01); G01L 11/06 (2013.01); G01L 19/086 (2013.01); G01P 15/0802 (2013.01); G01P 15/125 (2013.01);
Abstract
The invention relates to a sensor and a system for measuring pressure, variation in sound pressure, a magnetic field, acceleration, vibration, or the composition of a gas. The sensor comprises an ultrasound transmitter, a cavity, and a passive sensor element. In accordance with the invention the sensor includes antenna means for receiving radio frequency signals (f, f), and connecting means connecting the antenna to the ultrasound transmitter for using the radio frequency signals for providing energy for driving the ultrasound transmitter.