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:
Mar. 13, 2007
Filed:
Feb. 18, 2004
Curt Galbreath, Marshalltown, IA (US);
Richard J. Winkler, Marshalltown, IA (US);
Stephen G. Seberger, Marshalltown, IA (US);
Curt Galbreath, Marshalltown, IA (US);
Richard J. Winkler, Marshalltown, IA (US);
Stephen G. Seberger, Marshalltown, IA (US);
Fisher Controls International LLC, St. Louis, MO (US);
Abstract
A non-contacting position sensor having primary and secondary sensors detects relative displacement between two objects. The secondary sensor may function as a limit switch detection element in a limit switch circuit, and is positioned to be in the path of magnetic flux not detected by the primary sensor. The primary sensor is positioned in a flux path between sections of a flux gathering pole. A secondary sensor is positioned in a leakage flux path outside the first sensor or may be positioned in a secondary flux path.