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:
Nov. 26, 1991
Filed:
Jun. 22, 1990
Applicant:
Inventors:
Robert W Redlich, Athens, OH (US);
Douglas Bliss, Leominster, MA (US);
Assignee:
Data Instruments, Inc., Acton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G08C / ;
U.S. Cl.
CPC ...
32420716 ; 32420724 ; 336130 ; 34087031 ;
Abstract
A new linear position transducer is disclosed which is substantially identical to the transducer described and illustrated in U.S. Pat. No. 4,667,158, except that the tubular layer contained between the coil and the outer shield comprises a silicon steel foil wrapped around the coil which has the effect of reducing the reluctance of this space to a low value. An electrical insulator is applied to one side of the silicon steel foil to prevent the creation of a current path between the coil and the outer shield of the transducer.