Liquid dosing device with digital display
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 28, 1989
Issued Date -
N/A
app pub date -
Feb 26, 1988
filing date -
May 4, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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