Dispensing – With discharge assistant – Plural
Patent
1988-10-03
1989-10-24
Rolla, Joseph J.
Dispensing
With discharge assistant
Plural
222321, 222340, 222378, 222379, 222380, 222383, 222387, 222401, G01F 1100
Patent
active
048756040
ABSTRACT:
The invention relates to a dispenser for paste-like products which is characterized by a particular simple construction of its dispensing mechanism requiring a reduced number of components. Integrally connected to a supply container of the dispenser is a cylinder body slidably supporting a dispensing piston connected to an actuator cap guided on the cylinder body. The dispensing piston cooperates with the cylinder body to define a pump chamber communicating with the interior of the supply container through a non-return valve. On the other side the bottom portion of the dispensing piston is provided with a non-return valve for establishing communication of the pump chamber with a tubular section carrying the dispensing piston and at the same time acting as an outlet passage for the paste-like product. The tubular section is integrally connected to the actuator cap, the latter being biased towards a rest position by a return spring supported on a fixed counterstop, particularly on the cylinder body.
REFERENCES:
patent: 3146920 (1964-09-01), Benjamin
patent: 3282472 (1966-11-01), Roder
patent: 4485943 (1984-12-01), Czech
patent: 4511068 (1985-04-01), Bossina
patent: 4515298 (1985-05-01), Czech
patent: 4561571 (1985-12-01), Chen
patent: 4565306 (1986-01-01), Nakanishi et al.
patent: 4685594 (1987-08-01), Czech
Bollinger David H.
Rolla Joseph J.
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