Patent ID: 6737000
Filing Date: 2004-05-18
Classification: B05C,F16K,Y10T

Abstract:
A method of separately storing a plurality of components of a multi-component fluid material in a downstream compartment and an upstream compartment, combining the plurality of components in the downstream compartment while allowing venting to an outside atmosphere, and then moving a combined material from the downstream compartment to the upstream compartment, comprising the steps of:a. storing a first component of the multi-component material in the upstream compartment, and storing a second component of the multi-component material in the downstream compartment with a rotary stop cock connecting the upstream compartment to the downstream compartment to form a dispensing apparatus, the rotary stop cock having a stem and a body, with the stem being in a first selected orientation with respect to the body, such that the first component material in the upstream compartment cannot pass through the stop cock to the downstream compartment, and a second component material in the downstream compartment cannot pass through the stop cock to the upstream compartment; b. turning the stem of the stop cock to a second selected radial orientation with respect to the body of the stop cock, such that a first conduit in the stem of the stop cock in conjunction with a first passage and a second passage in the body of the stop cock creates a communicating passage between the downstream compartment and the upstream compartment and a second conduit in the stem of the stop cock in conjunction with the second passage in the body of the stop cock establishes a vent between said downstream compartment and said atmosphere; c. moving the first component of the material from the upstream compartment to the downstream compartment to create the combined material; d. mixing and combining the first and second components together to form the combined material; e. turning the stem of the stop cock to a fourth selected radial orientation with respect to the body of the stop cock, such that said first conduit in the stem of the stop cock in conjunction with said first and second passages in the body of the stop cock creates a communicating passage between the downstream compartment and the upstream compartment, while the outside atmosphere is prevented from entering either the downstream or upstream compartments via the second conduit in the stem of the stop cock; f. moving the combined material from the downstream compartment to the upstream compartment.