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:
Jan. 22, 2008
Filed:
Oct. 27, 2003
Thomas Bruce Fox, Bristol, VT (US);
William Jon Darling, Ferrisburg, VT (US);
Rollin Winter Brown, South Burlington, VT (US);
Lawrence Carl Maier, New Haven, VT (US);
Thomas Bruce Fox, Bristol, VT (US);
William Jon Darling, Ferrisburg, VT (US);
Rollin Winter Brown, South Burlington, VT (US);
Lawrence Carl Maier, New Haven, VT (US);
Simmonds Precision Products, Inc., Vergennes, VT (US);
Abstract
A float switch system for limiting to desirable levels current and energy entering a tank of combustible liquid comprises: a float switch disposed within the tank; an interface circuit external to the tank and coupled through wiring to the float switch; a passive transient suppression circuit coupled to the wiring external and in proximity to the tank, and operative to limit current and energy entering the tank over the wiring to the desirable levels; and a control circuit coupled to the float switch through the transient suppression circuit and to the interface circuit, the control circuit operative to monitor the status of the float switch with current within the desirable current level and to energize the interface circuit based on the switch status.