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. 06, 1997
Filed:
Jun. 08, 1995
Hyok S Lew, Arvada, CO (US);
Yon S Lew, Arvada, CO (US);
Other;
Abstract
A position sensor comprises a pair of electrically conducting elongated members having a high ohmic resistance per unit length thereof disposed parallel to one another in a direction defined by the line of displacement of a target member, and a capacitively coupling member disposed adjacent to the pair of electrically conducting elongated members and moving with the target member in the direction of displacement, which capacitively coupling member transmits an alternating electrical signal between the pair of electrically conducting elongated members by a capacitive electrical interaction therebetween, wherein an alternating electrical signal is supplied to the two opposite extremities of one of the pair of electrically conducting elongated members and a phase angle difference between two alternating electrical signals respectively taken off from the two opposite extremities of the other of the pair of electrically conducting elongated members is measured, and the position of the target member is determined as a function of the measured phase angle difference.