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:
Jul. 19, 1983
Filed:
Nov. 27, 1981
Alain M Bernard, Fresnes, FR;
Office National d'Etudes et de Recherches Aerospatiales, Chatillon, FR;
Abstract
Electrostatic accelerometer comprising an electrically conducting test weight freely floating in a cage and a system of electrodes located in said cage at the points where the axes of a coordinate tri-rectangular trihedral meet the cage. The electrodes are associated by pairs located along a given coordinate axis and form with the test weight pairs of variable capacitors. Two capacitor bridges including the variable capacitors give the sum and difference of the capacities of these variable capacitors and adder subtractor means gives the individual values of these capacities. The accelerometer further comprises means for calculating the gradients of the measured capacities of a pair of electrodes, means for squaring the positioning control signals relating to said pair of electrodes, and means for multiplying said gradient by said squared signals.