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US 5,004,159 AGranted
Method and apparatus for applying single of multicomponent materials
AssigneeSpecified Equipment Systems Co., Inc.
InventorKenneth J. Kistner
Life of this patent
Estimating the term…
Abstract
A method and apparatus for metering and pumping a single fluid of any viscosity includes a gear pump for pumping the fluid, the pump having a discharge connected by a hose to a dispenser. A check valve is used to maintain the pressure in the hose when the pump is in its at-rest position. The gear pump need only be operated as necessary to maintain pressure in the hose. Precise metering of the fluid pumped is accomplished by controlling the operation of the gear pump.
Claims7
A system for pumping a fluid comprising:
- a gear pump having two or more gears operating in a gear housing for receiving and pumping said fluid,
- a discharge line from said pump for receiving said pumped fluid,
- a dispenser connected on said line for selectively discharging fluid pumped through said line when said dispenser is in its opened position, and
- a torque motor for driving said gear pump,
- a closed chamber substantially enclosing said gear pump and said torque motor containing pressurized noncompressible fluid, said chamber being fully submerged within the fluid being pumped.
2 more elements
A system for pumping a fluid comprising:
- a gear pump for pumping said fluid, said gear pump having a gear rotating on a shaft in a gear housing for receiving and pumping the fluid,
- a motor for driving said pump, said drive motor having a shaft extending therefrom for driving engagement with the shaft of said gear pump,
- a chamber surrounding said gear pump, said drive motor and the engaging shafts extending therefrom, said chamber containing pressurized oil therein and being submerged in the fluid being pumped, and
- an applicator for receiving said fluid through a hose from said pump and for discharging said fluid.
1 more element
Dependencies are inferred from the claim text.