초록 ▼

The invention relates to a condiment dispensing system for dispensing condiment and the like which includes a gas operated pump for moving condiment(s) from a condiment source to a delivery nozzle through a condiment conduit which includes a draw-back valve to prevent condiment buildup on the delive

The invention relates to a condiment dispensing system for dispensing condiment and the like which includes a gas operated pump for moving condiment(s) from a condiment source to a delivery nozzle through a condiment conduit which includes a draw-back valve to prevent condiment buildup on the delivery nozzle. A gas-operated pump is controlled at the delivery nozzle to effect delivery of the condiment.

대표청구항 ▼

[ What is claimed is:] [8.] A condiment dispensing system comprising a rack for holding a source of condiment having an outlet port; a gas driven pump having a condiment inlet and a condiment outlet and a gas inlet for operating said pump; conduit means connecting the outlet port of the source of co

[ What is claimed is:] [8.] A condiment dispensing system comprising a rack for holding a source of condiment having an outlet port; a gas driven pump having a condiment inlet and a condiment outlet and a gas inlet for operating said pump; conduit means connecting the outlet port of the source of condiment with the condiment inlet of said pump; a source of gas under pressure; a delivery nozzle having at least one gas inlet and at least one gas outlet, a valve in said delivery nozzle for controlling gas flow therethrough and at least one passageway for flowing condiment therethrough, first gas conduit means connecting said source of gas with the gas inlet of said nozzle, second gas conduit means connecting the gas outlet of said delivery nozzle with the gas inlet of said pump; a delivery conduit connecting the passageway of said delivery nozzle with the condiment outlet of said pump; and a draw-back valve operably connected on said delivery conduit, said draw-back valve comprising a housing having a housing cavity, a condiment entry port for receiving condiment from a portion of said delivery conduit, and a condiment exit port for dispensing condiment to another portion of said delivery nozzle; a valve stem disposed in said housing cavity and movable between an open position and a closed position, said valve stem disposed away from said condiment entry port to permit condiment flow through said housing cavity between said condiment entry port and said condiment exit port in said open position, said valve stem blocking said condiment entry port and drawing a vacuum in a portion of said housing cavity between said condiment entry port and said condiment exit port when moved to said closed position.