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:
May. 29, 2001
Filed:
Jan. 15, 1999
Bellave S. Shivaram, Charlottesville, VA (US);
Murali V. Chaparala, Vancouver, WA (US);
Stephen H. Jones, Afton, VA (US);
Other;
Abstract
A cantilever structure is provided having a cantilever arm with a piezo-active detector embedded on the surface at the fixed end of the cantilever as well as at a sensing point close to the free end along with an integrated amplification circuitry. Deflection of the cantilever arm is initiated by two different methods: (a) by a force at the free end which induces a surface strain at the base of the cantilever and no strain at the free end and (b) by a torque at the free end which induces a maximum strain at the free end but no strain at the base of the cantilever. In the first case a piezo-active signal is produced only in the detector at the base and in the second case only in the detector close to the free end. When both force and torque cause the deflection of the cantilever end, their contributions are separated by comparing the signals produced by both the detectors with that produced by a third 'reference' detector which is not part of the cantilever arm but is still situated in close proximity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile