Fluid dispensing apparatus
Fluid dispensing apparatus ( 10 ) for selectively dispensing desired quantities of a fluid under pressure. The apparatus includes a base plate ( 14 ) having a dispensing passage ( 16 ) extending about a first axis ( 18 ); a valve arrangement ( 20 ) associated with the dispensing passage ( 16 ), and...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | Fluid dispensing apparatus (
10
) for selectively dispensing desired quantities of a fluid under pressure. The apparatus includes a base plate (
14
) having a dispensing passage (
16
) extending about a first axis (
18
); a valve arrangement (
20
) associated with the dispensing passage (
16
), and a piezoelectric transducer (
22
) acting on the valve arrangement (
20
) to effect displacement of the valve arrangement between a first position in which the dispensing passage (
16
) is closed and a second position in which the dispensing passage is connected to a source of the fluid under pressure. The valve arrangement (
20
) includes a slide valve (
24
), with the slide valve and the piezoelectric transducer (
22
) being arranged such that during at least initial displacement of the valve arrangement from the second position towards the first position, the slide valve (
24
) is displaced in a direction transverse to the first axis (
18
). |
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