Dispenser for products in paste form

Details Dispenser for products in paste form Dispenser for products in paste form

1988-05-18

1990-12-18

Rolla, Joseph J.

Dispensing

With discharge assistant

Plural

222391, 92104, G01F 1100

Patent

active

049780379

ABSTRACT:
The invention concerns a dispenser for the metered delivery of materials in paste form, with a tubular housing in which a follower piston in incrementally displaceable in the direction of discharge, and with an actuating key, positioned adjacent to a discharge nozzle, for the displacement of the surface of a pump diaphragm, fastened at its edges, from its rest position in the direction of the follower piston. The follower piston has a closable air vent. The pump diaphragm has a series of radially extending formations which materially increase its recovery capacity following a pumping stroke.

REFERENCES:
patent: 1150606 (1915-08-01), Kinealy
patent: 1490496 (1924-04-01), Trevillian
patent: 1615299 (1927-01-01), Bossi
patent: 2632475 (1953-03-01), Elo
patent: 2774518 (1956-12-01), Greene
patent: 3079953 (1963-03-01), Mounteer
patent: 3217933 (1965-11-01), Watson
patent: 3268123 (1966-08-01), Spatz
patent: 3451597 (1969-06-01), Watson, Jr.
patent: 4457454 (1984-07-01), Meshberg
patent: 4629097 (1986-12-01), Moore
patent: 4657161 (1987-04-01), Endo et al.
patent: 4691847 (1987-09-01), Ford et al.
patent: 4775080 (1988-10-01), Mettenbrink
patent: 4776496 (1988-10-01), Battegazzore

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