Portable dispenser for viscous material

Details Portable dispenser for viscous material Portable dispenser for viscous material

1989-05-22

1991-01-22

Shaver, Kevin P.

Dispensing

With discharge assistant

Insertable cartridge or removable container

74 8917, 192 93R, 222333, 222390, B05B 1102, F16H 344

Patent

active

049864548

ABSTRACT:
The invention relates to a manually held dispenser for dispensing flowable material such as a mastic sealant from a cartridge, comprising a plunger for forcing material from the cartridge on actuation of an electric motor drive to move the plunger by a rack and pinion in a direction to dispense sealant from the cartridge. When it is desired to replace a spent cartridge, the pinion is disengaged fromt he rack and the plunger can then be withdrawn or retracted to a starting positon in a direction opposite to the one direction.

REFERENCES:
patent: Re26180 (1967-04-01), Frenzel et al.
patent: 3635378 (1972-01-01), DeHart
patent: 3799407 (1974-03-01), Loethen et al.
patent: 3854629 (1974-12-01), Blieberger
patent: 3913799 (1975-10-01), Davis Jr.
patent: 3985273 (1976-10-01), Davis Jr.
patent: 4180187 (1979-12-01), Ben-Haim
patent: 4583934 (1986-04-01), Hata et al.
patent: 4615469 (1986-10-01), Kishi et al.
patent: 4704913 (1987-11-01), Zimmer

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