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:
Jul. 15, 1997
Filed:
Jun. 19, 1992
Timothy A Christensen, Stephenson County, IL (US);
Wayne L Ehlers, Carroll County, IL (US);
Kenneth L Eichholz, Jr, Stephenson County, IL (US);
Thomas A Fletcher, Stephenson County, IL (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
A sensor is provided for changing an operational characteristic of a circuit within a housing structure of the sensor to a preselected stimulus. The circuit within the housing structure is provided with magnetically sensitive components to change an operational parameter thereof. An object is provided to change the status of the magnetically sensitive component. The present invention incorporates a Hall effect element within the housing structure that is placed proximate a permanent magnet. Between the magnet and the Hall effect element a depression is formed to permit the insertion of a magnetically permeable object to change the magnetic field. The change in the magnetic field creates a change in the status of the Hall effect element and permits the circuit to change its operational characteristic.