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:
Aug. 15, 2000
Filed:
Jan. 27, 1998
David Raymond Neuman, Randolph, MN (US);
Sheldahl, Inc., Northfield, MN (US);
Abstract
A charge transfer load sensor. A first and second electrode are disposed a fixed distance apart, and a third electrode is disposed between the first and second electrodes. The third electrode is grounded and its position between the first and second electrodes varies in response to an applied force. A switch arrangement applies a predetermined voltage level to the first electrode and couples the second electrode to ground during a first predetermined timing interval. During a second predetermined timing interval, the first electrode is coupled to the second electrode to transfer the charge of a first capacitor formed by the first and third electrodes to a second capacitor formed by the second and third electrodes. An output port coupled to the second electrode provides an output voltage as a function of the applied force.