Dispenser for viscous liquids

Details Dispenser for viscous liquids Dispenser for viscous liquids

1987-03-09

1989-03-21

Scott, Samuel

Dentistry

Apparatus

Having intra-oral dispensing means

604224, 401145, 401172, 401184, 222207, 222327, 222390, 222213, A61C 504

Patent

active

048138703

ABSTRACT:
A dispenser for liquids including a cartridge containing a liquid, a nozzle, and a hollow flexible bladder between the cartridge and the nozzle. An assembly can be manually rotated to provide a high mechanical advantage and incrementally drive a piston through the cartridge to thereby fill the bladder with liquid from the cartridge and discharge any plug of solidified material (e.g., diluted phosphoric acid) that may be present in the nozzle; and manually operated button can be pressed to quickly and controllably collapse the bladder to thereafter dispel liquid within the bladder through the nozzle.

REFERENCES:
patent: 1724617 (1929-08-01), Rapellin
patent: 2061743 (1936-11-01), Tear
patent: 2745575 (1956-05-01), Spencer
patent: 2772817 (1956-12-01), Jauch
patent: 3002517 (1961-10-01), Pitton
patent: 3462840 (1969-08-01), Ellman
patent: 3902815 (1975-09-01), Williams
patent: 4199083 (1980-04-01), LoMaglio
patent: 4560352 (1985-12-01), Neumeister et al.
patent: 4640637 (1987-02-01), Winthrop

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