초록 ▼

An apparatus is disclosed which dispenses a metered quantity of a liquid. The apparatus uses a roller and base pad to form a nip which receives a dispensing leg of a container. Movement of the roller along the base pad causes liquid within the dispensing leg to be dispensed through a pressure respon

An apparatus is disclosed which dispenses a metered quantity of a liquid. The apparatus uses a roller and base pad to form a nip which receives a dispensing leg of a container. Movement of the roller along the base pad causes liquid within the dispensing leg to be dispensed through a pressure responsive valve. The roller travels along a D-shaped path, the straight portion of the path is the nip forming portion. The apparatus operates in response to an object reflecting a beam of electromagnetic energy in the form of infrared light. A container is also disclosed which has a housing, preferably cardboard, and an envelope of flexible plastic contained therein. The envelope holds the liquid and the dispensing leg is accessed through a tear-away opening in the cardboard housing.

대표청구항 ▼

A device for dispensing a predetermined quantity of a liquid product comprising: (a) a roller mounted for rotation and movable along an endless path which is substantially straight along a first portion of said path; (b) a base pad adjacent said path along said first portion of said path and definin

A device for dispensing a predetermined quantity of a liquid product comprising: (a) a roller mounted for rotation and movable along an endless path which is substantially straight along a first portion of said path; (b) a base pad adjacent said path along said first portion of said path and defining a nip with said roller as it travels along at least part of said first portion; (c) a flexible walled conduit means positioned adjacent said base pad within said nip; (d) a valve means biased in a normally closed position sealing said conduit, said valve means being openable in response to increased pressure within the conduit means and recloses upon reduction of said pressure increase below a predetermined level; (e) an amount of said liquid product within said conduit between said nip and said valve means; and (f) moving means for moving said roller along said first portion of said path toward said valve means to squeeze said product between said nip and said valve means to increase the pressure within said conduit to open said valve means and permit passage of said product past said valve means out of said conduit, said moving means including a pair of spaced parallel rotatable walls each defining a slot extending radially from a center of rotation of one wall, said slots supporting said roller, and biasing means for biasing said roller along said slots into a position forming said nip.