James W Polstra

41163648, Sep 26, 1978

Feb 2, 1976

5/654699

Samuel W. Culbertson - Arvada CO
James W. Polstra - Boulder CO

Binks Manufacturing Company - Franklin Park IL

B67D 546

222 40

A system for safely dispensing fluids, especially low stability fluids such as catalysts, comprises a pair of fluid operated pumps of very small volume alternately operable for drawing in individually small quantities of catalyst from an unpressurized, sanitary source of supply, and for then pressurizing and dispensing the catalyst in individually small increments; the two pumps operating alternately to provide a continuous pressurized discharge of catalyst despite the fact that only a small quantity is pressurized at any given time. Because only a small quantity of catalyst is under pressure, and the basic supply is not under pressure and is maintained in a sanitary condition, the potential for violent reaction of the low stability fluid is greatly reduced. Also, the small quantity of fluid involved taken in conjunction with force dissipating structural features incorporated in the system, produces a manageable reaction, despite the conventional violence of such reactions, whereby the system greatly minimizes the hazards heretofore involved in the use of such low stability fluids.