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:
Dec. 27, 2011
Filed:
Apr. 06, 2010
Victor Alexandrovich Kalinin, Oxfordshire, GB;
Victor Alexandrovich Kalinin, Oxfordshire, GB;
Transence Technologies Plc, Oxfordshire, GB;
Abstract
A contactless SAW based torque and temperature sensor comprising a first () and second () SAW resonator provided on a substrate made of Y+34° cut of quartz. The first SAW resonator () has its principle axis inclined at +45° to the X-axis of the substrate, which, in use is either aligned with the longitudinal axis of the device who torque is to be measured or is perpendicular thereto, and the second SAW () has its principle axis inclined at −45° to the X-axis of the substrate. A third SAW () has its principle axis inclined at an angle of 30 degrees to the X-axis of the substrate. Each said SAW resonator () is formed by laying a film of aluminum on the substrate having a thickness (h) and the SAW resonators have an average operating wavelength λ where the ratio h/λ is in the range 0.021 to 0.032.