Dual action solenoid pump
First Claim
Patent Images
1. A pump for moving a fluid comprising:
- a body having first and second ends and a chamber open to said ends, said body having an inside wall surrounding the chamber, said wall having a plurality of longitudinal inwardly directed ribs, a first end member mounted on the first end of the body, a second end member mounted on the second end of the body, each of said end members having fluid inlet and fluid outlet passages, one-way inlet valve means in the inlet passages to control the flow of fluid into the opposite ends of the chamber, one-way outlet valve means in the outlet passages to control the flow of fluid out of the opposite ends of the chamber, a piston located in the chamber, said ribs being engageable with the piston to space the piston from the inside wall surrounding the chamber whereby a limited amount of fluid flows around the piston when the piston moves in the chamber, said piston being free to move in said chamber between the first and second end members, said piston including magnetic material, solenoid means for establishing sequential reverse magnetic force, and control means connected to the solenoid means to provide electric energy to energize the solenoid means whereby the sequential reverse magnetic force of the solenoid means acting on the magnetic material reciprocates the piston in the chamber, thereby moving fluid into and out of the opposite ends of the chamber through the inlet and outlet passages.
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Abstract
A pump for moving a fluid, as blood, having a body and end members forming a cylindrical chamber. A free floating piston located in the chamber is moved along the length of the chamber with a solenoid to pump blood into and out of opposite ends of the chamber. The end members containing inlet and outlet valves and sleeves are adapted to attach to veins or tubes to carry the blood to and from the pump. When electrical power is applied to the solenoid, a magnetic force operates to move the piston in the chamber, thereby pumping blood into and out of the chamber through the valves in the opposite end members.
44 Citations
55 Claims
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1. A pump for moving a fluid comprising:
- a body having first and second ends and a chamber open to said ends, said body having an inside wall surrounding the chamber, said wall having a plurality of longitudinal inwardly directed ribs, a first end member mounted on the first end of the body, a second end member mounted on the second end of the body, each of said end members having fluid inlet and fluid outlet passages, one-way inlet valve means in the inlet passages to control the flow of fluid into the opposite ends of the chamber, one-way outlet valve means in the outlet passages to control the flow of fluid out of the opposite ends of the chamber, a piston located in the chamber, said ribs being engageable with the piston to space the piston from the inside wall surrounding the chamber whereby a limited amount of fluid flows around the piston when the piston moves in the chamber, said piston being free to move in said chamber between the first and second end members, said piston including magnetic material, solenoid means for establishing sequential reverse magnetic force, and control means connected to the solenoid means to provide electric energy to energize the solenoid means whereby the sequential reverse magnetic force of the solenoid means acting on the magnetic material reciprocates the piston in the chamber, thereby moving fluid into and out of the opposite ends of the chamber through the inlet and outlet passages.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15)
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14. A pump for moving a fluid comprising:
- a body having first and second ends and a chamber open to said ends, said body having a plurality of longitudinal ribs projected into the chamber, a first end member mounted on the first end of the body, a second end member mounted on the second end of the body, each of said end members having fluid inlet and fluid outlet passages, one-way inlet valve means in the inlet passage to control the flow of fluid into the opposite ends of the chamber, one-way outlet valve means in the outlet passages to control the flow of fluid out of the opposite ends of the chamber, a piston located in the chamber, said longitudinal ribs being engageable with the piston located in the chamber, said piston being free to move in said chamber between the first and second end members, said piston including magnetic material, solenoid means for establishing sequential reverse magnetic force, and control means connected to the solenoid means to provide electric energy to energize the solenoid means whereby the sequential reverse magnetic force of the solenoid means acting on the magnetic material reciprocates the piston in the chamber thereby moving fluid into and out of the opposite ends of the chamber through the inlet and outlet passages.
- View Dependent Claims (16, 17, 18, 19)
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20. A pump for moving a fluid comprising:
- means having a chamber and inlet and outlet passages in communication with opposite ends of the chamber, one-way inlet valve means operable to allow fluid to flow through the inlet passage into the opposite ends of the chamber and restrict flow of fluid out of the chamber, one-way outlet valve means operable to allow fluid to flow through the outlet passage out of the chamber and restrict flow of fluid into the chamber, a movable piston means located in the chamber, said piston means having a core, a ring of magnetic material associated with the core, an outer skin covering the core and ring, solenoid means associated with said means having a chamber for establishing sequential reverse magnetic force, and control means connected to the solenoid means whereby the sequential reverse magnetic force acting on the magnetic material of the piston means moves the piston means in a manner to move fluid into and out of the opposite ends of the chamber.
- View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A pump for moving fluid comprising:
- a body having a first end and second end and chamber opened to said ends, a first end member mounted on the first end of the body, a second end member mounted on the second end of the body, each of said end members having fluid inlet and fluid outlet passages, one-way inlet valve means in the inlet passage to control the flow of fluid into the opposite ends of the chamber, one-way outlet valve means in the outlet passages to control the flow of fluid out of the opposite ends of the chamber, a piston located in the chamber, said piston having a core, a ring of magnetic material associated with the outer portion of the core, and an outer skin covering the core and the ring, said piston being free to move in said chamber between the first and second end members, said piston including magnetic material, solenoid means for establishing sequential reverse magnetic force, and control means connected to the solenoid means to provide electric energy to energize the solenoid means whereby the sequential reverse magnetic force of the solenoid means acting on the magnetic material reciprocates the piston in the chamber thereby moving fluid into and out of the opposite ends of the chamber through the inlet and outlet passages.
- View Dependent Claims (35, 36, 37, 38, 39, 40)
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41. A pump for moving a fluid comprising:
- a body having first and second ends and a chamber open to said ends, said body having an inside wall surrounding the chamber, a first end member mounted on the first end of the body, a second end member mounted on the second end of the body, each of said end members having fluid inlet and fluid outlet passages, one-way inlet valve means in the inlet passages to control the flow of fluid into the opposite ends of the chamber, one-way outlet valve means in the outlet passages to control the flow of fluid out of the opposite ends of the chamber, a piston located in the chamber, said piston having a ring of magnetic material located adjacent one side of the piston, said piston being free to move in said chamber between the first and second end members, solenoid means for establishing sequential reverse magnetic force, and control means connected to the solenoid means to provide electric energy to energize the solenoid means whereby the sequential reverse magnetic force of the solenoid means acting on the magnetic material reciprocates the piston in the chamber, thereby moving fluid into and out of the opposite ends of the chamber through the inlet and outlet passages.
- View Dependent Claims (42, 43, 44, 45)
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46. A pump for moving a fluid comprising:
- means having a chamber and inlet and outlet passages in communication with opposite ends of the chamber, said means including an inside wall surrounding the chamber, said wall having a plurality of longitudinally extended ribs, said ribs extended into the chamber, one-way inlet valve means operable to allow fluid to flow through the inlet passage into the opposite ends of the chamber and restrict the flow of fluid out of the chamber, one-way outlet valve means operable to allow fluid to flow through the outlet passage out of the chamber and restrict the flow of fluid into the chamber, a movable piston means located in the chamber, said piston means being engageable with the ribs to space the piston means from the wall whereby a limited amount of fluid flows around the piston means when the piston means moves in the chamber, said piston means having magnetic material, solenoid means associated with said means having a chamber for establishing sequential reverse magnetic force, and control means connected to the solenoid means operable to provide electric energy to energize the solenoid means whereby the sequential reverse magnetic force acting on the magnetic material of the piston means moves the piston means in a manner to move the fluid into and out of the opposite ends of the chamber.
- View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55)
Specification