Device for dispensing a dosed amount of free-flowing material, i

Details Device for dispensing a dosed amount of free-flowing material, i Device for dispensing a dosed amount of free-flowing material, i

1989-09-25

1991-08-06

Huppert, Michael S.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

222340, 222378, G01F 1102

Patent

active

050370073

ABSTRACT:
An improved container closure and dosing pump or syringe has a piston formed with a truncated cone-shaped face. A spring-biased operator yieldably holds the piston sealed deeply in a dosing chamber from which it can be shifted to project essentially by the height of the truncated piston face to completely scavenge the chamber. The device is formed of only three injection molded plastic parts and a return spring, to effect inexpensive production.

REFERENCES:
patent: 3640470 (1972-02-01), Susuki et al.
patent: 4371097 (1983-02-01), O'Neill
patent: 4640444 (1987-02-01), Bundschuh

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