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:
Jul. 23, 2002
Filed:
Jul. 28, 2000
Niel Mazurek, Huntingdon Valley, PA (US);
Josam Company, Philadelphia, PA (US);
Abstract
An automatic draw-off grease interceptor includes a separation tank defining a chamber An inlet delivers an effluent stream of grease and water into the chamber which separates into a thicken layer of grease atop a water layer. A pump is included for pumping grease from the chamber when the grease has reached a predetermined level . A conductive probe extends vertically in the separation tank from a location above the upper surface of the effluent to a location below the predetermined level An R/C oscillator circuit continuously measures the amount of water in the chamber by measuring the capacitance between the probe and a wall of the tank. A controller actuates the pump in response to the R/C oscillator circuit measuring a capacitance corresponding to an amount of water in the tank when the grease layer reaches the predetermined level.