Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1988-12-22
1990-06-12
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
222387, 222389, 401270, 401288, A46B 1304
Patent
active
049320947
ABSTRACT:
An applicator tool includes a housing for holding a disposable cartridge containing liquid such as glue, caulk or sealant. The cartridge has a flexible nozzle at one end and a plunger at another end. To dispense liquid from the cartridge, the applicator tool supplies air pressure behind the plunger to drive the plunger toward the nozzle, thereby forcing the liquid through the nozzle. To stop dispensing liquid from the cartridge, the applicator tool removes driving pressure on the plunger and clamps the nozzle between two pistons so that the liquid cannot flow through the nozzle. The applicator tool also includes a rotatable brush mounted on the housing and a pneumatic motor within the housing for rotating the brush. The tip of the cartridge nozzle extends out of the housing and into the brush, and as liquid flows out of the nozzle the rotating brush spreads the liquid onto a surface. A trigger mounted on the housing operates valves providing supplying air to the cartridge plunger, operating the nozzle clamping pistons, and driving the pneumatic motor.
REFERENCES:
patent: 1782681 (1930-11-01), Foss et al.
patent: 3056151 (1962-10-01), Vlacancich
patent: 3084069 (1963-04-01), Simon
patent: 3221947 (1965-12-01), Penn
patent: 3764045 (1973-10-01), Ornsteen
patent: 3775016 (1973-11-01), Adams
patent: 3906573 (1975-09-01), Crawford
patent: 4208753 (1980-06-01), Lewis
patent: 4299336 (1981-11-01), Studer
patent: 4312091 (1982-01-01), Cardus
patent: 4321722 (1982-03-01), Klocke
Roberts Edward L.
The Boeing Company
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