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. 01, 2003
Filed:
Sep. 25, 2000
Philip O'Farrell Morton, Portland, OR (US);
ITW Food Equipment Group LLC, Troy, OH (US);
Abstract
A ventilator includes a hood structure having an air inlet slot and a multi-position damper baffle within the hood structure. The damper baffle is movably positioned adjacent the air inlet slot for movement between (i) an exhaust cycle position in which the damper baffle allows gases to flow through the hood structure, (ii) a wash cycle position in which the damper baffle closes off the air inlet slot; and (iii) a fire cycle position in which the damper baffle divides the hood structure into an upper section and a lower section. A manifold and associated water control valve may also be provided, along with a motor for controlling damper baffle positioning, an exhaust fan for air flow, and with a controller being provided for automated operation. In an internal fire mode of the controller the damper baffle is moved to the fire cycle position, the exhaust fan is turned off and the water control valve is opened. In a wash cycle mode of the controller the damper baffle is moved to the wash cycle position, the exhaust fan is turned off and the water control valve is opened. In an external fire mode of the controller the damper baffle is moved to the exhaust cycle position, the exhaust fan is turned on and the water control valve is opened.