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. 23, 1995
Filed:
Mar. 24, 1994
Foster L Striffler, New London, CT (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A very small pitch sensor which accurately measures angular rotation about he pitch axis while being substantially insensitive to angular rotations about the roll or yaw axes. The pitch sensor comprises a spherical cavity that is fluid filled. The fluid fill further comprises one half conductive fluid and one half dielectric fluid. The fluids are selected to be immiscible and of different densities. The inside of the spherical cavity is segmented into three surface areas for connection to an electronic circuit. The electronic circuit measures voltage differentials between the segmented surface areas which vary with the conductive fluid surface in contact with the respective segmented areas. The conductive fluid surface contact area varies with the angular rotation of the cavity and about the pitch axis.