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. 28, 2000
Filed:
Jun. 11, 1998
Perry Robert Czimmek, Yorktown, VA (US);
Seimans Automotive Corporation, Auburn Hills, MI (US);
Abstract
A radioisotope proximity sensor is provided for detecting proximity or distance to a nearby object containing a small radiation source complementary to the sensor. The output of the sensor is amplified or compared to determine the distance or proximity. The radioisotope proximity sensor is unaffected by magnetic fields over the short sensing distances. It is also unaffected by environmental contamination when the appropriate radiosource/detector combination is used. The radioisotope proximity sensor is easily shielded from electrostatic or electromagnetic noise, and the radiation source can be small, easily incorporated, and requires no external power or connections to affect mechanical reliability or impede armature movement.