Claims
- 1. A fluid pumping arrangement including a fluid pump including a suction port, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess and which cooperates with said recess to define a variable volume pumping chamber, biasing means for moving said moveable wall in one direction, a fluid outlet communicable with said fluid pumping chamber and communicating with said suction port so that suction present at said suction port communicates with said fluid pumping chamber and thereby moves said moveable wall in the opposite direction against the action of said biasing means when said fluid pumping chamber is in communication with said fluid outlet, a fluid inlet communicable with said fluid pumping chamber and adapted to communicate with a source of fluid, means for selectively controlling communication of said fluid pumping chamber with said fluid outlet and with said fluid inlet, and means responsive to movement of said moveable wall for pumping a second fluid and comprising a bore which is in said pump housing and which extends perpendicularly from said moveable wall and which partially defines a second variable volume fluid pumping chamber, a piston which is received in said bore and which includes a first end and a second end, said first end being attached to said moveable wall and said second end cooperating with said bore to form said second variable volume fluid pumping chamber, a second fluid inlet in communication with said second fluid pumping chamber and adapted to communicate with said second fluid pumping chamber and adapted to communicate with a second source of fluid, check valve means in said second fluid inlet for permitting fluid flow into and preventing fluid flow from said second fluid pumping chamber, a second fluid outlet in communication with said second fluid pumping chamber and adapted to communicate with said suction port, and check valve means in said second fluid outlet for permitting fluid flow from and preventing fluid flow into said second fluid pumping chamber.
- 2. A marine propulsion device including a fluid pump including a suction port, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess and which cooperates with said recess to define a variable volume pumping chamber, biasing means for moving said moveable wall in one direction, a fluid outlet communicable with said fluid pumping chamber and communicating with said suction port so that suction present at said suction port communicates with said fluid pumping chamber and thereby moves said moveable wall in the opposite direction against the action of said biasing means when said fluid pumping chamber is in communication with said fluid outlet, a fluid inlet communicable with said fluid pumping chamber and adapted to communicate with a source of fluid, means for selectively controlling communication of said fluid pumping chamber with said fluid inlet, and means for continuing the flow of fluid to said suction port when said fluid outlet is not in communication with said fluid pumping chamber, said supply continuation means comprising a housing defining a supply recess, a supply movable wall which is located in said supply recess and which cooperates with said supply recess to define a variable volume supply chamber, a fluid port communicating with said supply chamber, said fluid outlet, and said suction port so that suction present at said suction port moves said supply moveable wall in one direction to thereby supply fluid to said suction port from said supply chamber when said fluid outlet is not in communication with said fluid pumping chamber, and means for biasing said supply moveable wall in the opposite direction to thereby fill said supply chamber with fluid when said fluid outlet is in communication with said fluid pumping chamber.
- 3. A fluid pumping arrangement including a fluid pump including a suction port, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess and which cooperates with said recess to define a variable volume pumping chamber, a fluid inlet adapted to communicate with a source of fluid, means alterately operable for selectively communicating said fluid pumping chamber with said fluid inlet and with said suction port, and means for effecting reciprocating movement of said moveable wall in response to alternate communication of said fluid pumping chamber with said suction port and with said fluid inlet, whereby, when said fluid pumping chamber is in communication with said fluid inlet, said moveable wall is displaced in one direction to fill said pumping chamber with fluid, and whereby, when said fluid pumping chamber is in communication with said suction port, said moveable wall is displaced in the direction opposite to said one direction to empty fluid from said pumping chamber, said means for pumping a second fluid comprising a bore which is in said pump housing and which extends perpendicularly from said movable wall and which partially defines a second variable volume fluid pumping chamber, a piston which is received in said bore and which includes a first end and a second end, said first end being attached to said movable wall and said second end cooperating with said bore to form said second variable volume fluid pumping chamber, a second fluid inlet in communication with said second fluid pumping chamber and adapted to communicate with a second source of fluid, check valve means in said second fluid inlet for permitting fluid flow into and preventing fluid flow from said second fluid pumping chamber, a fluid outlet in communication with said second fluid pumping chamber and adapted to communicate with said suction port, and check valve means in said second fluid outlet for permitting fluid flow from and preventing fluid flow into said second fluid pumping chamber.
- 4. A fluid pumping arrangement including a fluid pump including a suction port, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess and which cooperates with said recess to define a variable volume pumping chamber, a fluid inlet adapted to communicate with a source of fluid, means alternately operable for selecting communicating said pumping chamber with said fluid inlet and with said suction port, means for effecting reciprocating movement of said moveable wall in response to alternate communication of said fluid pumping chamber with said suction port and with said fluid inlet, whereby, when said fluid pumping chamber is in communication with said fluid inlet, said moveable wall is displaced in one direction to fill said pumping chamber with fluid, and whereby, when said fluid pumping chamber is in communication with said suction port, said moveable wall is displaced in the direction opposite to said one direction to empty fluid from said pumping chamber, and means for continuing the supply of fluid to said suction port when said suction port is not in communication with said fluid pumping chamber said supply continuation means comprising a housing defining a supply recess, a supply moveable wall which is located in said supply recess and which cooperates with said supply recess to define a variable volume supply chamber, a fluid port communicating with said supply chamber, and said suction port so that suction present at said suction port moves said supply moveable wall in one direction to thereby supply fluid to said suction port from said supply chamber when said suction port is not in communication with said fluid pumping chamber, and means for biasing said supply moveable wall in the opposite direction to thereby fill said supply chamber with fluid when said suction port is in communication with said fluid pumping chamber.
- 5. A marine propulsion device including a propeller, a lower unit rotatably supporting said propeller, an upper unit supported by said lower unit and including an engine, and a fuel pump including a suction port, drive train means for rotating said propeller, said drive train means being driven by said engine, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is in said recess and which cooperates with said recess to define a variable volume fuel metering chamber, biasing means for moving said moveable wall in one direction, a fuel outlet communicable with said fuel metering chamber and communicating with said suction port, so that suction present at the suction port communicates with said fuel metering chamber and thereby moves said moveable wall in the opposite direction against the action of said biasing means when said fuel metering chamber is in communication with said fuel outlet, a fuel inlet communicable with said fuel metering chamber and adapted to communicate with a source of fuel, means for selectively controlling communication of said fuel metering chamber with said fuel outlet and said fuel inlet, a bore which is in said pump housing and which extends perpendicularly from said moveable wall and which partially defines a variable volume oil pumping chamber, a piston which is received in said bore and which includes a first end and a second end, said first end being attached to said moveable wall and said second end cooperating with said bore to form said variable volume oil pumping chamber, an oil inlet in communication with said oil pumping chamber and adapted to communicate with a source of oil, check valve means in said oil inlet for permitting oil flow into and preventing fluid flow from said oil pumping chamber, an oil outlet in communication with said oil pumping chamber and adapted to communicate with the suction port, and check valve means in said oil outlet for permitting oil flow from and preventing oil flow into said oil pumping chamber.
- 6. A marine propulsion device including a propeller, a lower unit rotatably supporting said propeller, an upper unit supported by said lower unit and including an engine, and a fuel pump including a suction port, drive train means driven by said engine for rotating said propeller, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess and which cooperates with said recess to define a variable volume pumping chamber, biasing means for moving said moveable wall in one direction, a fluid inlet adapted to communicate with a source of fluid, valve means for alternately communicating said pumping chamber with said suction port so that said suction port drains fluid from said pumping chamber, thereby displacing said moveable wall in the direction opposite to said one direction, and with said fluid inlet so that fluid at said inlet is supplied to said pumping chamber in response to wall movement in said one direction, and means for operating said valve means in response to movement of said moveable wall.
- 7. A marine propulsion device including a propeller, a lower unit rotatably supporting said propeller, an upper unit supported by said lower unit and including an engine, and a fuel pump including a suction port, drive train means driven by said engine for rotating said propeller, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess, which cooperates with said recess to define a variable volume pumping chamber, and which includes an inlet port and an outlet port in spaced relation to said inlet port, a fluid inlet adapted to communicate with a source of fluid, means operable for alternately communicating said outlet port with said suction port and communicating said inlet port with said fluid inlet, and means for effecting reciprocating movement of said moveable wall in response to alternate communication of said inlet port with said fluid inlet and communication of said outlet port with said suction port, whereby, when said fluid pumping chamber is in communication with said fluid inlet, said moveable wall is displaced in one direction to fill said pumping chamber with fluid, and whereby, when said fluid pumping chamber is in communication with said suction port, said moveable wall is displaced in the direction opposite to said one direction to empty fluid from said pumping chamber.
- 8. A fluid pumping arrangement including a fluid pump including a suction port, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess and which cooperates with said recess to define a variable volume pumping chamber, biasing means for moving said moveable wall in one direction, a fluid inlet adapted to communicate with a source of fluid, valve means for alternately communicating said pumping chamber with said suction port so that said suction port drains fluid from said pumping chamber, thereby displacing said moveable wall in the direction opposite to said one direction, and with said fluid inlet so that fluid at said inlet is supplied to said pumping chamber in response to wall movement in said one direction, and means for operating said valve means in response to movement of said moveable wall.
- 9. A fluid pumping arrangement in accordance with claim 8 wherein said fluid pumping device further includes means responsive to movement of said moveable wall for pumping a second fluid.
- 10. A fluid pumping arrangement in accordance with claim 8 wherein said biasing means for moving said moveable wall in one direction comprises a spring in said fluid pumping chamber and extending between said moveable wall and said pump housing.
- 11. A fluid pumping arrangement in accordance with claim 8 and further including means for continuing the flow of fluid to said suction port when said fluid outlet is not in communication with said fluid pumping chamber.
- 12. A fluid pumping arrangement including a fluid pump including a suction port, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess and which cooperates with said recess to define a variable volume pumping chamber, biasing means for moving said moveable wall in one direction, a fluid outlet communicable with said fluid pumping chamber and communicating with said suction port so that suction present at said suction port communicates with said fluid pumping chamber and thereby moves said moveable wall in the opposite direction against the action of said biasing means when said fluid pumping chamber is in communication with said fluid outlet, a fluid inlet communicable with said fluid pumping chamber and adapted to communicate with a source of fluid, and means for selectively controlling communication of said fluid pumping chamber with said fluid outlet and with said fluit inlet, said selective controlling means comprising a valve housing defining a valve chamber, a first suction passageway extending between said fluid outlet and said valve chamber, a first fluid passageway extending from said valve chamber to said fluid inlet, a second suction passageway extending from said valve chamber to said fluid pumping chamber, a second fluid passageway extending from said fluid pumping chamber to said valve chamber, a shuttle valve in said valve chamber and moveable between a first position wherein said first suction passageway is in communication with said second suction passageway and said first fluid passageway is not in communication with said second fluid passageway, and a second position wherein said first fluid passageway is in communication with said second fluid passageway and said first suction passageway is not in communication with said second suction passageway, and means connecting said shuttle valve to said moveable wall and providing for lost motion between said shuttle valve and said moveable wall.
- 13. A fluid pumping arrangement in accordance with claim 12 wherein said valve chamber includes a first end and a second end, and wherein said first and second suction passageways are in communication with said first end of said valve chamber, and wherein said first and second fluid passageways are in communication with said second end of said valve chamber.
- 14. A fluid pumping arrangement in accordance with claim 12 wherein said selective controlling means further includes detent means for alternately biasing said shuttle valve towards said first position and said second position.
- 15. A fluid pumping arrangement including a fluid pump including a suction port, and a fluid pumping device comprising a pump housing defining a recess, a moveable wall which is located in said recess, which cooperates with said recess to define a variable volume pumping chamber, and which includes an inlet port and an outlet port in spaced relation to said inlet port, a fluid inlet adapted to communicate with a source of fluid, means operable for alternately communicating said outlet port with said suction port and communicating said inlet port with said fluid inlet, and means for effecting reciprocating movement of said moveable wall in response to alternate communication of said inlet port with said fluid inlet and communication of said outlet port with said suction port, whereby, when said fluid pumping chamber is in communication with said fluid inlet, said moveable wall is displaced in one direction to fill said pumping chamber with fluid, and whereby, when said fluid pumping chamber is in communication with said suction port, said moveable wall is displaced in the direction opposite to said one direction to empty fluid from said pumping chamber.
- 16. A fluid pumping arrangement in accordance with claim 15 wherein said fluid pumping device further includes means responsive to movement of said moveable wall for operating said selective communication means.
- 17. A fluid pumping arrangement in accordance with claim 15 wherein said reciprocative moving means comprises biasing means for moving said moveable wall in said one direction.
- 18. A fluid pumping arrangement in accordance with claim 15 and further including means for continuing the supply of fluid to said suction port when said suction port is not in communication with said fluid pumping chamber.
- 19. A fluid pumping device comprising a pump housing defining a recess, a moveable wall which is in said recess and which cooperates with said recess to define a variable volume fluid metering chamber, biasing means for moving said moveable wall in one direction, a fluid outlet communicable with said fluid metering chamber and adapted to communicate with a suction port of a fluid pump so that suction present at the suction port communicates with said fluid metering chamber and thereby moves said moveable wall in the opposite direction against the action of said biasing means when said fluid metering chamber is in communication with said fluid outlet, a fluid inlet communicable with said fluid metering chamber and adapted to communicate with a source of fluid, means for selectively controlling communication of said fluid metering chamber with said fluid outlet and said fluid inlet, a bore which is in said pump housing and which extends perpendicularly from said moveable wall and which partially defines a variable volume fluid pumping chamber, a piston which is received in said bore and which includes a first end and a second end, said first end being attached to said moveable wall and said second end cooperating with said bore to form said variable volume fluid pumping chamber, a second fluid inlet in communication with said fluid pumping chamber and adapted to communicate with a second source of fluid, check valve means in said second fluid inlet for permitting fluid flow into and preventing fluid flow from said fluid pumping chamber, a second fluid outlet in communication with said fluid pumping chamber and adapted to communicate with the suction port, and check valve means in said second fluid outlet for permitting fluid flow from and preventing fluid flow into said fluid pumping chamber.
- 20. A fluid pumping device in accordance with claim 19 wherein said selective controlling means comprises a valve housing defining a valve chamber, a first suction passageway extending between said fluid outlet and said valve chamber, a first fluid passageway extending from said valve chamber to said fluid inlet, a second suction passageway extending from said valve chamber to said fluid metering chamber, a second fluid passageway extending from said fluid metering chamber to said valve chamber, a shuttle valve in said valve chamber and moveable between a first position wherein said first suction passageway is in communication with said second suction passageway and said first fluid passageway is not in communication with said second fluid passageway, and a second position wherein said first fluid passageway is in communication with said second fluid passageway and said first suction passageway is not in communication with said second suction passageway, and means connecting said shuttle valve to said moveable wall and providing for lost motion between said shuttle valve and said moveable wall.
- 21. A fluid pumping device in accordance with claim 20 wherein said valve chamber includes a first end and a second end, and wherein said first and second suction passageways are in communication with said first end of said valve chamber, and wherein said first and second passageways are in communication with said second end of said valve chamber.
- 22. A fluid pumping device in accordance with claim 20 wherein said selective controlling means further includes detent means for alternately biasing said shuttle valve towards said first position and said second position.
- 23. A fluid pumping device in accordance with claim 20 wherein said biasing means for moving said moveable wall comprises a spring in said fluid metering chamber and extending between said moveable wall and said pump housing.
- 24. A fluid pumping device in accordance with claim 20 and further including means for continuing the supply of fluid to the suction port when said fluid outlet is not in communication with said fluid metering chamber.
- 25. A fluid proportioning device in accordance with claim 24 wherein said supply continuation means comprises a housing defining a supply recess, a supply moveable wall which is located in said supply recess and which cooperates with said supply recess to define a variable volume supply chamber, a fluid port communicating with said supply chamber, said fluid outlet, and the suction port so that suction present at the suction port moves said supply moveable wall in one direction so that said supply chamber supplies fluid to the suction port when said fluid outlet is not in communication with said fluid metering chamber, and means for biasing said supply moveable wall in the opposite direction to fill said supply chamber with fluid when said fluid outlet is in communication with said fluid metering chamber.
RELATED APPLICATIONS
This application is a continuation-in-part of DuBois application filed Oct. 7, 1983 as Ser. No. 540,045.
US Referenced Citations (6)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
540045 |
Oct 1983 |
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