Fluid pump
First Claim
1. A fluid pump comprising:
- a motor;
a material pump interconnecting a material reservoir and a material dispenser; and
a closed-loop pressure regulation system between said motor and said material pump comprising;
a hydraulic pump connected to and driven by said motor;
an impeller connected between said hydraulic pump and said material drive; and
a pressure regulator to regulate pressure in said closed-loop pressure regulation system.
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Accused Products
Abstract
A fluid pump for pumping fluidized materials comprises a motor, a material pump, and a closed-loop pressure hydraulic system interconnecting the motor and the material pump. The closed-loop hydraulic system further comprises a hydraulic pump, a pressure regulator, an impeller, and an expandable fluid reservoir. The motor includes an output to drive the hydraulic pump, which pumps hydraulic fluid throughout the closed-loop hydraulic system. As the hydraulic fluid flows throughout the closed-loop system, it passes through the impeller, which in turn drives the material pump to deliver the fluidized material from a material reservoir to an outlet valve for dispensing the material.
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Citations
31 Claims
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1. A fluid pump comprising:
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a motor;
a material pump interconnecting a material reservoir and a material dispenser; and
a closed-loop pressure regulation system between said motor and said material pump comprising;
a hydraulic pump connected to and driven by said motor;
an impeller connected between said hydraulic pump and said material drive; and
a pressure regulator to regulate pressure in said closed-loop pressure regulation system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of pumping a fluidized material, said method comprising:
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interconnecting a motor and a material pump with a closed-loop pressure regulation system, said system comprising;
a hydraulic pump;
an impeller; and
a pressure regulator;
circulating a fluid at a first pressure through said closed-loop pressure regulation system with said motor; and
pumping a fluidized material at a second pressure from a material reservoir to a material dispenser by driving said material pump with said closed-loop pressure regulation system. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A paint sprayer comprising:
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a paint reservoir;
an outlet valve;
a trigger mechanism operatively connected to said outlet valve;
a motor;
a pump interconnecting said paint reservoir and said outlet valve; and
a closed-loop pressure regulation system interconnecting said motor and said pump, wherein said motor drives fluid through said closed-loop pressure regulation system at a first pressure, and said closed-loop pressure regulation system drives said pump to deliver paint at a second pressure from said paint reservoir to said applicator nozzle. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification