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:
Jan. 07, 1992
Filed:
Aug. 10, 1990
Dennis K Briefer, Berlin, MA (US);
Setra Systems, Inc., Acton, MA (US);
Abstract
An instrument includes multiple sensing elements of the variable-capacitance type. The sensing elements are placed by a switching network into a single capacitance sensing circuit, and those elements which are not active in the circuit at a given time are switched by another or the same switching network into a ground shunt. The switching is effected at a rate, in relation to the expected vibrational spectrum of the sensor system, to determine a set of readings which are essentially equivalent to a set of simultaneous capacitance measurements of the plural sensing element. A preferred system is a weight sensing system employing three or four load cells to support a scale platform.