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:
Mar. 08, 2005
Filed:
Sep. 03, 2001
Anthony Lonsdale, Banbury, GB;
Bryan Lonsdale, Banbury, GB;
Anthony Lonsdale, Banbury, GB;
Bryan Lonsdale, Banbury, GB;
Transense Technologies PLC, , GB;
Abstract
A rotary signal coupler for providing signal coupling to a Surface Acoustic Wave (SAW) device () mounted on a shaft () includes a first electrically conducting loop () mounted on a disc () and connected to the SAW device (), and a second electrically conductive loop () mounted on a disc () and connected to external electronic circuitry. The disc () is fixed relative to the shaft () and the disc () is fixed relative to the structure in which the shaft () rotates so that the loops () are inductively coupled. A grounded screen (), which preferably takes the form of a plurality of radially extending fingers is located on the disc () and positioned between the loops () to eliminate capacitive coupling therebetween.