초록 ▼

A floating portable pump is constructed of a float defining a well for containing water, a centrifugal pump supported on the float with its impeller shaft extending vertically and with its suction inlet submerged in water in the well, and an internal combustion engine arranged to drive the pump impe

A floating portable pump is constructed of a float defining a well for containing water, a centrifugal pump supported on the float with its impeller shaft extending vertically and with its suction inlet submerged in water in the well, and an internal combustion engine arranged to drive the pump impeller. The pump and engine are secured together on the float in an arrangement such that the engine causes rotation of the pump impeller to cause the pump to draw water from the well through its suction inlet and discharge water from the pump discharge.

대표청구항 ▼

1. A floating portable pump comprising: a float adapted to be supported on a water in a partially submerged floating condition, said float defining a well for containing water, a centrifugal pump having an impeller mounted on a rotatable impeller shaft, a suction inlet, and a pump discharge, me

1. A floating portable pump comprising: a float adapted to be supported on a water in a partially submerged floating condition, said float defining a well for containing water, a centrifugal pump having an impeller mounted on a rotatable impeller shaft, a suction inlet, and a pump discharge, means supporting said pump on said float with said impeller shaft extending vertically and with said suction inlet submerged in water in said well when said float is in said partially submerged floating condition, an internal combustion engine arranged to drive said impeller shaft, means securing said pump directly to said engine so that said pump and engine are supported together by said float and in an arrangement such that the engine causes rotation of said impeller to cause said pump to draw water from said well through the suction inlet and discharge water from said pump discharge, said float being a one-piece foam filled structure forming a rim portion and a horizontally extending shelf located internally of said rim portion, said shelf having an opening therein adapted to receive the suction inlet of said pump, said float including a pair of handles molded onto side wall portions thereof, said pump supporting means including a mounting flange supported on the top wall of said shelf and a plurality of shock-absorbing mounting means between said flange and said shelf. 2. A pump according to claim 1 including a pair of outrigger means adapted to be mounted on said float to extend from said side wall portions. 3. A pump according to claim 2, wherein each of said outrigger means includes a rod adapted to removably engage one of said handles and a float mounted on the extended end of said rod. 4. A floating portable pump comprising: a float adapted to be supported on water in a partially submerged floating condition, said float defining a well for containing water, a centrifugal pump having an impeller mounted on a rotatable impeller shaft, a suction inlet, and a pump discharge, means supporting said pump on said float with said impeller shaft extending vertically and with said suction inlet submerged in water in said well when said float is in said partially submerged floating condition, an internal combustion engine arranged to drive said impeller shaft, means securing said pump directly to said engine so that said pump and engine are supported together by said float and in an arrangement such that the engine causes rotation of said impeller to cause said pump to draw water from said well through the suction inlet and discharge water from said pump discharge, said float being a one-piece foam filled structure forming a rim portion and a horizontally extending shelf located internally of said rim portion, said shelf having an opening therein adapted to receive the suction inlet of said pump, said pump supporting means including a mounting flange supported on the top wall of said shelf and a plurality of shock-absorbing mounting means between said flange and said shelf, said float being provided with a flat surface so that said float can be supported in a vertically extending position when not in use. 5. A pump according to claim 4 wherein said float comprises a splash collar projecting upwardly from said rim portion and extending around said engine and said pump for protecting the electrical parts thereof. 6. A floating portable pump comprising: a float adapted to be supported on water in a partially submerged floating condition, said float defining a well for containing water, a centrifugal pump having an impeller mounted on a rotatable impeller shaft, a suction inlet, and a pump discharge, means supporting said pump on said float with said impeller shaft extending vertically and with said suction inlet submerged in water in said well when said float is in said partially submerged floating condition, an internal combustion engine arranged to drive said impeller shaft, and means securing said pump directly to said engine so that said pump and engine are supported together by said float and in an arrangement such that the engine causes rotation of said impeller to cause said pump to draw water from said well through the suction inlet and discharge water from said pump discharge, said engine having an engine block made of a light weight metal and mounted at a location above said well, said engine including an exhaust pipe secured to said engine block so as to extend downwardly therefrom and to turn upwardly toward the top end of said float, said exhaust pipe having a heat dissipating fin formed thereon and having a portion extending downwardly from said exhaust pipe to be submerged in the water contained in said well whereby said fin functions to draw heat by conduction from said exhaust pipe to cool the same, and a pair of plates secured to said engine block and extending downwardly therefrom so as to dip into water contained in said well, said plates being spaced apart and located on each side of said exhaust pipe whereby air coming from said engine block is shielded from contact with said float and is cooled by passing over said plates. 7. A floating portable pump comprising: a float adapted to be supported on water in a partially submerged floating condition, said float defining a well for containing water, a centrifugal pump having an impeller mounted on a rotatable impeller shaft, a suction inlet, and a pump discharge, means supporting said pump on said float with said impeller shaft extending vertically and with said suction inlet submerged in water in said well when said float is in said partially submerged floating condition, an internal combustion engine arranged to drive said impeller shaft and having a throttle means for controlling the engine speed, means securing said pump directly to said engine so that said pump and engine are supported together by said float and in an arrangement such that the engine causes rotation of said impeller to cause said pump to draw water from said well through the suction inlet and discharge water from said pump discharge, means sensing the pressure of the water in said pump discharge, throttle actuator means for actuating said engine throttle means to reduce the engine speed to an idle condition in response to the sensing of a low water pressure condition in said pump discharge by said sensing means, said engine including an ignition circuit for controlling ignition thereof and having a grounding circuit for shutting off the ignition of said engine, and fan means for blowing air in a fan chamber to produce an air pressure condition which increases as the engine speed increases and vice versa, means sensing the air pressure condition in said fan chamber, pressure responsive switch means serially connected in said grounding circuit for controlling the grounding of said ignition circuit, and conduit means connecting said air pressure switch to said fan chamber, said sensing means being responsive to an air pressure condition corresponding to an overspeed condition of said engine for actuating said air switch means to a control position in which said ignition circuit is grounded to cause a reduction in the engine speed. 8. A pump according to claim 7 wherein said throttle actuator means comprises a throttle actuator assembly including a rolling diaphragm piston means, a cover defining a pressure chamber on one side of said rolling diaphragm piston means, a housing defining a piston chamber on the other side of said rolling diaphragm means, said piston chamber being constructed and arranged to accommodate movement of said rolling diaphragm piston means, a piston rod secured to said rolling diaphragm piston means for movement therewith and having an extended end, and means connecting said extended end to said engine throttle means. 9. A pump according to claim 8 wherein said throttle actuator assembly includes a spring means biasing said rolling diaphragm piston means to a rest position when a low pressure condition exists in said pressure chamber whereby said engine throttle means maintains said engine in an idle condition, said rolling diaphragm piston means being responsive to an increase in pressure in said pressure chamber for moving said rolling diaphragm piston means away from said rest position to a throttle actuating position for actuating said throttle means to increase the engine speed. 10. A floating portable pump comprising: a float adapted to be supported on water in a partially submerged floating condition, said float defining a well for containing water, a centrifugal pump having an impeller mounted on a rotatable impeller shaft, a suction inlet, and a pump discharge, means supporting said pump on said float with said impeller shaft extending vertically and with said suction inlet submerged in water in said well when said float is in said partially submerged floating condition, an internal combustion engine arranged to drive said impeller shaft, means securing said pump directly to said engine so that said pump and engine are supported together by said float and in an arrangement such that the engine causes rotation of said impeller to cause said pump to draw water from said well through the suction inlet and discharge water from said pump discharge, said float having a rim portion and a horizontally extending shelf located internally of said rim portion, said shelf having an opening therein adapted to receive the suction inlet of said pump, said pump having a mounting flange overlying the top wall of said shelf and having a plurality of mounting holes therein, said means for supporting said pump on said float comprising a plurality of shock-absorbing mounting means, each of said mounting means including a vertically extending passage in said shelf means aligned with a mounting hole in said pump flange, a vertically extending bolt means extending through said passage and a corresponding mounting hole in said pump flange for engaging said pump flange at the top end of said bolt means, said vertical passage having an upper enlarged diameter portion at the upper end thereof and a lower enlarged diameter portion at the lower end thereof, an upper resilient member received in said upper enlarged diameter portion and maintained in compression between said pump flange and said upper enlarged diameter portion of said passage, and a lower resilient member received in said lower enlarged diameter portion and maintained in compression between the lower end of said bolt means and said lower enlarged diameter portion of said passage. 11. A pump according to claim 10 including a suction screen mounted on the lower end of said bolt means below said lower resilient members, said bolt means supporting said suction screen to extend across an inlet formed in the bottom end of said float. 12. A pump according to claim 10 wherein said resilient members are made of a soft rubber.