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.

Date of Patent:
Oct. 05, 2021

Filed:

Jan. 30, 2018
Applicant:

Walbro Llc, Tucson, AZ (US);

Inventors:

Robby L. Linton, Saginaw, MI (US);

Edward J. Talaski, Caro, MI (US);

Assignee:

Walbro LLC, Cass City, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 23/36 (2006.01); G01D 5/165 (2006.01); H01C 10/32 (2006.01);
U.S. Cl.
CPC ...
G01F 23/363 (2013.01); G01D 5/165 (2013.01); H01C 10/32 (2013.01);
Abstract

A liquid level sensor includes a liquid level responsive member that moves in response to changing liquid level, an electrically conductive contact associated with the liquid level responsive member, a circuit including a rectifying element and a) one or more conductive elements, or b) one or more resistive elements or c) one or more conductive elements and one or more resistive elements, wherein the contact is arranged to engage at least one of the elements in a, b, or c, and a power supply. The power supply is adapted to provide a voltage to the circuit causing a current flow in a first direction in the circuit wherein the current flows through the contact and to provide a current flow in a second direction in the circuit wherein the rectifying element prevents current flow through the contact.


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