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:
Aug. 11, 2020
Filed:
Jun. 15, 2018
Applicant:
Lumitex, Inc., Strongsville, OH (US);
Inventor:
Emeric S. Bennett, Chardon, OH (US);
Assignee:
Lumitex, Inc., Strongsville, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/955 (2006.01); G01D 5/24 (2006.01); H03K 17/945 (2006.01); H03K 17/96 (2006.01);
U.S. Cl.
CPC ...
H03K 17/955 (2013.01); G01D 5/24 (2013.01); H03K 2017/9455 (2013.01); H03K 2017/9613 (2013.01); H03K 2217/960705 (2013.01); H03K 2217/960765 (2013.01);
Abstract
A low-power non-contact proximity sensor with improved sensitivity. In particular, the non-contact proximity sensor includes a capacitive sensor decoupled from a surrounding environment by a guard ring. Both the capacitive sensor and the guard ring are driven by a direct current (DC) power source, with the guard ring driven based on feedback from the voltage applied to the capacitive sensor.