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:
Oct. 20, 2009
Filed:
Aug. 30, 2007
Danial L. Kosht, Gaylord, MI (US);
Joseph M. Walling, Boyne City, MI (US);
Richard P. Bunge, Boyne City, MI (US);
Ron Hickman, Sherman, IL (US);
Danial L. Kosht, Gaylord, MI (US);
Joseph M. Walling, Boyne City, MI (US);
Richard P. Bunge, Boyne City, MI (US);
Ron Hickman, Sherman, IL (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A pressure switch includes a piston that is movably disposed in a sensor housing. The piston moves, in response to a media pressure being applied to a surface thereof, between at least a first piston position and a second piston position. A conical disc spring supplies a non-linear spring force to the piston, and exhibits a spring force hysteresis. A switch engages the piston and is moved between first and second switch states by the piston. The switch exhibits a switch hysteresis. The spring force hysteresis and switching hysteresis are individually adjustable and together may be used to adjust the overall hysteresis of the pressure switch.