Dispensing – With casing or support – Enclosing cover for actuating parts of discharging means
Patent
1986-07-03
1987-08-11
Skaggs, H. Grant
Dispensing
With casing or support
Enclosing cover for actuating parts of discharging means
222257, 222321, 222383, 222386, 222340, G01F 1104
Patent
active
046855947
ABSTRACT:
The invention relates to a dispenser for paste-like products which is characterized by a simplified metering device and a simple an low-cost construction in combination with reliable operation and high metering accuracy. The head piece of the dispenser includes a pump chamber at the top of a supply container communicating with the supply of the paste-like product within the container, the communication between the container and the pump chamber being established by a lateral opening in a guide member of the dispensing piston, the opening being surrounded by a bell-shaped sealing body defining a sealed communication space between the outlet opening of the container and the lateral inlet opening in the guide member of the dispenser piston. The dispenser piston is slidably mounted within the actuator cap of the dispenser which at the same time includes the dispensing channel. During the pressure-dispensing of the paste-like product from the pump chamber through the dispensing channel to the exterior, the actuator cap itself acts to obturate the lateral inlet opening, i.e. to interrupt the communication between the pump chamber and the product supply in the container, so that the full dispensing pressure acts in the pump chamber and in the dispensing channel. The release of the resiliently loaded actuator cap results in the lateral inlet opening being opened, so that paste-like product may be sucked into the pump chamber from the supply container through the communciation space and a central opening of the dispenser piston during the return stroke of the dispenser piston. The feeding of the product within the dispenser is thus directly controlled by the actuator cap in the manner of a slide valve. The dispenser may be used for dispensing paste-like products of any type.
REFERENCES:
patent: 1475980 (1923-12-01), Zerk
patent: 1711777 (1929-05-01), Davis
patent: 3877617 (1975-04-01), Steven
patent: 4323175 (1982-04-01), Eckert
patent: 4515298 (1985-05-01), Czech
Nilles James E.
Skaggs H. Grant
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