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:
Mar. 31, 2009
Filed:
Mar. 31, 2005
Philip C. Hawken, Darien, IL (US);
Jerome C. Klopp, Arlington Heights, IL (US);
Robert J. Van Der Linde, Aurora, IL (US);
Paul H. Tuma, Lombard, IL (US);
Philip C. Hawken, Darien, IL (US);
Jerome C. Klopp, Arlington Heights, IL (US);
Robert J. Van der Linde, Aurora, IL (US);
Paul H. Tuma, Lombard, IL (US);
Robertshaw Controls Company, Carol Stream, IL (US);
Abstract
A method and apparatus are provided for simultaneously changing multiple liquid level settings in a liquid-level switch including a diaphragm actuated pressure switch apparatus having a first and a second switch, through use of an actuator apparatus including a single control knob shaft rotatably connected to the pressure switch apparatus and having a first and a second cam fixedly attached to the shaft for rotation therewith, the first cam being operatively connected to provide a biasing force against actuation of the first switch, and the second cam being operatively connected to provide a biasing force against actuation of the second switch.