Liquid dosing device with digital display

Details Liquid dosing device with digital display Liquid dosing device with digital display

1986-04-24

1988-08-02

Shaver, Kevin P.

Dispensing

With recorder, register, indicator, signal or exhibitor

7386416, 222383, 422100, B01L 302, B67D 508

Patent

active

047609397

ABSTRACT:
A liquid dispenser has a cylinder in which a piston may move in an intake stroke and a discharge stroke. A pulse generator responds to any movement of the piston in the discharge direction, whereby a counting and readout device provides a dispensing measurement readout even for inadvertent discharge movements of the piston. Movement of the piston in the discharge direction rotates a wheel in the pulse generator. A ratchet system may be provided to prevent rotation of the wheel in reverse during intake movements of the piston. Alternatively the wheel rotates in both directions, and a discriminator is provided to discriminate between the two directions of movement.

REFERENCES:
patent: 3319840 (1967-05-01), Oehme et al.
patent: 4159784 (1979-07-01), d'Autry
patent: 4192450 (1980-03-01), Nezu
patent: 4475666 (1984-10-01), Bilbrey et al.
patent: 4526294 (1985-07-01), Hirschmann et al.

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