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Dispenser Valve

IP.com Disclosure Number: IPCOM000080970D
Original Publication Date: 1974-Mar-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 76K

Publishing Venue

IBM

Related People

Wilk, RH: AUTHOR

Abstract

The dispensing of accurate quantities of a liquid without post shut-off dripping is a problem in manufacturing processes, where the quantity to be dispensed is and must be precise. A simple valve which eliminates the dripping problem is illustrated in Figs. 1 and 2. Fig. 1 shows the open position of the valve, and Fig. 2 the valve in a closed position.

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Dispenser Valve

The dispensing of accurate quantities of a liquid without post shut-off dripping is a problem in manufacturing processes, where the quantity to be dispensed is and must be precise. A simple valve which eliminates the dripping problem is illustrated in Figs. 1 and 2. Fig. 1 shows the open position of the valve, and Fig. 2 the valve in a closed position.

The valve includes a shuttle plate 10 which reciprocates (horizontally) against an upper lapped surface 11 and a lower lapped surface 12. An insert 13 in the shuttle plate 10 has a conduit 14 bored therethrough which mates with a conduit 15 in a fixed plate 16, the conduit 15 being in communication with the fluid to be dispensed.

The shuttle plate 10 is bored to receive springs 17, which apply pressure against the insert 13 and maintain the insert against the lapped surface 11.

Insert 18 is provided in a fixed block 19, and in a manner similar to the first insert 13, is spring loaded by springs 20 to maintain upward pressure against the shuttle plate 10. The insert 18 includes a dispenser opening 21 therein, which permits the liquid to pass downwardly onto an object in precise amounts.

When the shuttle plate 10 is moved to the left or right, the conduit 14 is moved out of registry with the apertures or conduits 15 and 21 interrupting flow. The short column of undispensed fluid in insert 18 remains in the conduit 21 due to surface tension, and due to the vacuum created by the mating of the two lapped...