Adjustable fill motor assembly

Details Adjustable fill motor assembly Adjustable fill motor assembly

1987-06-24

1989-09-26

Rolla, Joseph J.

Dispensing

Automatic control

Motor control

222255, 222309, 222381, 222440, 141147, 92 131, 92 132, 417473, B67D 508, F01B 3114

Patent

active

048693979

ABSTRACT:
A control arrangement is provided which permits precise metering of a bellows pump. The control arrangement permits the predetermined setting of an amount of fluid to be dispensed from a single pump or a plurality of pumps. The control system permits a double bellows pump to cooperate with a drive mechanism in order to precisely meter the fluid to be dispensed from the pump by selecting a predetermined amount of fluid from a range of settings of the control mechanism. When a plurality of double bellows liquid dispensing pump units are provided, a plurality of electric motors are arranged to drive an adjustable stop element and provide a limit on the length of stroke of a driving rod connected to the bellows pump. The motors are controlled by a program logic circuit which monitors the degree of movement of the stop elements and controls the motors in response to a preset or selected fill condition.

REFERENCES:
patent: 3514222 (1970-05-01), Korotkov et al.
patent: 3743140 (1973-07-01), Saurbrey
patent: 3835898 (1974-09-01), Leonard
patent: 4091969 (1978-05-01), Easter et al.
patent: 4337880 (1982-07-01), Rozmus
patent: 4369898 (1983-01-01), Andersson
patent: 4402461 (1983-09-01), Mosse et al.
patent: 4428511 (1984-01-01), Howell
patent: 4475666 (1984-10-01), Bilbrey et al.
patent: 4648421 (1987-03-01), Chant et al.

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