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US 5,509,792 AGranted
Electromagnetically driven reciprocating pump with fluted piston
AssigneePumpworks, Inc.
InventorsPaul J. Sullivan, Vernon R. Scott, Robert Smith
Life of this patent
Estimating the term…
Abstract
A reciprocal type of pump structure wherein a piston has a linear function actuated by a pair of coils energized alternately and includes a plurality of tapered flutes. A check valve in an outlet of the structure which stretches to open said outlet under the impact of expelled fluids and of its own volition retracts to the closed position immediately upon the cessation of fluids being expelled.
Claims11
A linear reciprocating device adapted to operate as a pump, comprising
- a tubular housing,
- a magnetically conductive cylindrical piston disposed in said housing,
- said housing having an inlet and an outlet including a check valve,
- said piston having an inlet facing end and an outlet facing end,
- a power coil mounted onto said housing adapted to attract and move said piston toward said outlet,
- a reset coil mounted onto said housing adjacent said power coil adapted to attract and move said piston toward said inlet,
- said piston having clearance within said housing to have reciprocal movement therein,
- said piston having a plurality of flutes thereabout tapered from the inlet facing end of said piston to the outlet facing end thereof having clearance at said outlet facing end to permit the passage of fluid thereby,
- a circuit connected to an appropriate power source alternately energizing said coils to cause the reciprocal movement of said piston, and
- a housing having said tubular housing, piston and coils disposed therein.
7 more elements
A linear reciprocating device operating as a pump, having in combination
- a tubular housing having an interior wall surface,
- a magnetically conductive piston disposed in said housing,
- said housing having respective ends respectively having an inlet and an outlet.
- a power coil mounted onto said housing causing said piston to move in the direction of said outlet and in its forward position a reset coil is energized,
- said reset coil mounted onto said housing upon being energized causes said piston to be drawn rearwardly in the direction of said inlet,
- said outlet having an extensible yielding check valve,
- said piston having ends respectively facing said inlet and said outlet and having clearance for longitudinal movement within said housing,
- a plurality of exterior flutes about said piston tapered from said inlet facing end of said piston toward its outlet facing end,
- the ends of said tapered flutes adjacent said outlet facing end of said piston having clearance with respect to the wall surface of said housing thereabout to permit fluid to pass therebetween, whereby
- as said piston is drawn toward said inlet, incoming fluid is forced through said flutes to collect in front of the outlet facing end of said piston,
- movement of said piston in the direction of said outlet impacts said fluid forcing the same under pressure through said outlet and the yielding extension of said check valve therein, and
- an external housing having said tubular housing, piston and coils disposed therein.
9 more elements
Dependencies are inferred from the claim text.