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US 4,132,242 AGranted
Chemical distribution system
OwnerJohn D. Carroll, Jr.inventor
Life of this patent
Estimating the term…
Abstract
Chemical distribution system having a pressurized tank for causing flow of chemical to a plurality of appliances and having an apparatus for introducing a chemical into the tank from bulk storage and maintaining the pressure at a constant, predetermined value.
Claims6
Chemical distribution system, comprising:
- (a) a drum containing a body of chemical,
- (b) a spring-support platen for supporting the drum which issues a signal when the weight of the drum falls below a predetermined value,
- (c) a pressure tank containing a body of chemical and a pocket of air trapped in its upper portion above the body,
- (d) a supply conduit, one end of which is connected to the lower portion of the pressure tank and the other end extends downwardly in the drum,
- (e) a rotary pump connected to the supply conduit for pumping chemical from the drum to the pressure tank,
- (f) a motor connected to the pump,
- (g) a control connected on one hand to the pressure tank above the body of chemical to receive an indication of pressure of the pocket of air and connected on the other hand to the motor for energizing it when the pressure in the pocket of air falls below a predetermined value,
- (h) a pressure conduit connected on one end to the lower part of the pressure tank and at the other end to a plurality of secondary conduits, each leading to a washing machine, and
- (i) a branch conduit from the pressure conduit to the supply conduit between the drum and the check valve, the branch conduit containing a pressure relief valve to return chemical to the drum if the pressure in the pressure conduit exceeds a predetermined value.
6 more elements
Dependencies are inferred from the claim text.