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US 5,327,948 AGranted
Supply system
AssigneeRojac (Patterns Division) Limited
InventorJohn J. Blakemore
Life of this patent
Estimating the term…
Abstract
A supply system for supplying a liquid reagent from a storage tank to a dispensing head, for example a foam molding head, includes a tank (12) having a lid (14) moveable between a closed position and an open position affording access to the interior of the tank and the underside of the lid, a pump (26) and a distribution valve (36) disposed on the underside of the lid, and a drive motor (27) for the pump and an actuator (37) for the valve on the exterior of the lid. Any leakage occuring in use from the pump and/or the valve takes place in the tank and leaked material remains inside the tank.
Claims16
A supply system for liquids comprising:
- a storage tank for containing a supply of liquid to be dispensed;
- an opening in said storage tank;
- a lid having an outer side and an underside and movably mounted for movement relative to said tank between a closed position wherein said underside of said lid engages said opening for sealing said tank and an open position wherein said lid is in relative spaced relation with respect to said opening so that the interior of said tank and said underside of said lid are accessible;
- and
- a pump mounted on said underside of said lid for pumping liquid in said storage tank to associated dispensing equipment outside of said storage tank, so that in use said lid sealingly closes said opening in said storage tank and said pump is housed within said interior of said storage tank and any leakage from said pump remains in said storage tank.
2 more elements
A supply system for liquids comprising:
- a storage tank for containing a supply of liquid to be dispensed;
- a pump housed within the interior of said storage tank for pumping liquid in said storage tank from said storage tank to associated dispensing equipment, so that liquid leaked from said pump remains within said storage tank;
- an outlet on said pump;
- a distribution valve disposed within said storage tank and having an inlet communicating with said outlet of said pump;
- a valve motor drive means mounted externally of said tank and operatively connected to said valve for operating said valve;
- and
- pump drive means operatively connected to said pump for driving said pump.
4 more elements
A supply system for supplying a liquid reagent from a storage tank to a dispensing head comprising:
- a storage tank having an opening therein for storing liquid to be dispensed at a predetermined pressure;
- a lid engageable with said opening and having an underside and an outer side;
- lid moving means operatively connected to said lid for moving said lid between a closed position wherein said underside of said lid is sealingly engaged with said opening and an open position wherein said lid is relatively spaced with respect to said opening facilitating access to the interior of said storage tank and said underside of said lid;
- a pump mounted on said underside of said lid so that said pump is within said interior of said storage tank in use when said lid is in said closed position, said pump comprising a casing and a pump outlet in said casing;
- a pump motor mounted on said outer side of said lid and operatively connected to said pump for driving said pump to supply liquid from said tank to said dispensing head;
- a distribution valve mounted on said underside of said lid so that said distribution valve is within said interior of said tank when said lid is in said closed position;
- valve motor means mounted on said outer side of said lid and operatively connected to said distribution valve for operating said distribution valve, said distribution valve being operatively connected to said pump outlet for controlling distribution of said liquid from said pump outlet;
- and
- means for ensuring that said pump casing is supplied with said liquid at a pressure at least equal to the pressure on said liquid in said storage tank.
6 more elements
A supply system for liquids comprising:
- a storage tank for containing a supply of liquid to be dispensed;
- means for pressurizing liquid in said storage tank;
- a pump for pumping liquid in said storage tank to associated dispensing equipment, said pump being housed within the interior of said storage tank so that liquid leaking from said pump remains in said storage tank, said pump comprising a casing and a pumping mechanism within said casing;
- means for driving said pump;
- means for ensuring that said casing is filled with said liquid at a pressure at least equal to the pressure on said liquid in said storage tank;
- and
- recirculating means for recirculating liquid pumped and not dispensed at said associated dispensing equipment back to the interior of said tank.
4 more elements
Dependencies are inferred from the claim text.