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:
Oct. 05, 1982
Filed:
Jun. 13, 1980
Applicant:
Inventors:
Alan Pelczyk, Hockenheim, DE;
Robert F Purssell, Plymouth, GB;
Alfred J Woollard, Hurst, TX (US);
Albert L Fowler, Kirkcaldy, GB;
David M Walker, Glenrothes, GB;
Alan G Henderson, Markinch, GB;
Alastair K Stevenson, Glenrothes, GB;
Assignee:
Ranco Incorporated, Dublin, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
336 30 ; 336 75 ; 336 87 ;
Abstract
A displacement-measuring transducer has a laminar member displaceable, for example under control of a vacuum actuator, within a housing containing respective pairs of coils spaced part in the displacement direction of the laminar member, which is provided with two apertures spaced apart in the said direction, such that the coupling between the coils of each pair is dependent upon the position of said apertures and, therefore, on the displacement of the laminar member.