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| Number | Title | Issue Date |
| 8172550 | Vacuum self priming pump Provided is a vacuum self priming pump. The pump includes an actuating member that is installed in an outlet by a hinge shaft to be capable of rotating and configured to be quickly opened by water pressure when water is discharged through the outlet, an arm that ext... | 05/08/2012 |
| 8172549 | Self-ventilating centrifugal pump In order to ventilate a centrifugal pump (1) having a centrifugal pump outlet space (6) and a centrifugal pump suction space (4), as well as having an additional ventilation pump (3), preferably configured as a vacuum pump, having a venti... | 05/08/2012 |
| 8075282 | Sprayer pump primed by using venturi An agricultural sprayer includes a centrifugal pump used for transferring fluid from a nurse tank to fill the sprayer tank. It is sometimes required that the centrifugal pump be primed in order to perform the transfer of fluid and this priming is done by creating a ... | 12/13/2011 |
| 8029245 | Variable volume, shape memory actuated insulin dispensing pump A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery.... | 10/04/2011 |
| 7993108 | Variable volume, shape memory actuated insulin dispensing pump A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery.... | 08/09/2011 |
| 7993109 | Variable volume, shape memory actuated insulin dispensing pump A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery.... | 08/09/2011 |
| 7922458 | Variable volume, shape memory actuated insulin dispensing pump A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery.... | 04/12/2011 |
| 7878769 | Automatic transmission pump-priming device A pump-priming device configured to fit within the pump inlet circuit formed in the valve body of an automatic transmission is disclosed. The present pump priming device comprises a fluid-conducting structure having a fluid inlet and a fluid outlet, which is fabrica... | 02/01/2011 |
| 7334600 | Priming apparatus for a centrifugal pump A vacuum assisted priming system for a fluid pump including a housing defining a hopper that communicates with a pump inlet. The housing mounts a first port that communicates with the source of vacuum and a second port that communicates with atmosphere. A check valv... | 02/26/2008 |
| 7331770 | Disposable two-stage pump A disposable device for transfer of at least one predetermined medium into a device for treatment and promotion of healing of damaged body tissue. The device is comprised of a housing and a first pump stage disposed within the housing for pumping a first predetermin... | 02/19/2008 |
| 7331769 | Pumping system A pumping system including a fluid inlet line and a primary pump for the fluid. The primary pump includes an impeller in an impeller chamber, with the impeller chamber adapted to receive fluid from the inlet line. A suction chamber is above the impeller chamber, wit... | 02/19/2008 |
| 7287963 | Fast pump priming A pump priming system may include two or more pumps. In one example, a system for pump priming can include a first pump and a second pump. Each pump can have an inlet adapted for a suction force and an outlet adapted for a pressure force. The system can include a tu... | 10/30/2007 |
| 7037086 | Self-priming centrifugal pump A self-priming centrifugal pump comprises an inlet and an outlet, and a centrifugal impeller for receiving liquid from the inlet and delivering it to the outlet. An inlet valve and an outlet valve are provided, and a diaphragm arrangement is driven by the same motor... | 05/02/2006 |
| 7007828 | Chemical metering pump A liquid chemical metering pump (24) is described that can be fully submerged within a hazardous liquid chemical transport/storage container (28). The pump (24) includes a discharge adaptor (30) that can be received in the outlet aperture... | 03/07/2006 |
| 6923646 | Process and apparatus for treating an exhaust stream from a dental operatory There is disclosed a process and apparatus for withdrawing an exhaust stream including gas, liquids and solids from the dental operatory connected to the suction side of a vacuum pump wherein solids and liquids are sequentially removed such that compressed gas from ... | 08/02/2005 |
| 6837690 | Rotary pump with integral hand pump unit A pump, such as a rotary vane pump, roller cell pump, or gear pump for delivering diesel fuel, with a pump housing and a pumping unit that is arranged in the pump housing and driven for rotation via the drive shaft of a motor. The pump housing has an intake and an o... | 01/04/2005 |
| 6837692 | Self-priming centrifugal pump with internal series of diffusers and impellers and laminar valve A centrifugal pump with facilitated self-priming, which comprises a casing with a suction inlet and a discharge outlet and with an internal series of diffusers and impellers, which form a cylindrical assembly that forms, together with the casing, an annular interspa... | 01/04/2005 |
| 6692234 | Pump system with vacuum source A self priming pump system that includes a motor coupled to a centrifugal pump for driving the centrifugal pump. A separator having a reservoir is provided for storing a limited amount of pumped fluid in advance of the centrifugal pump. A vacuum source pr... | 02/17/2004 |
| 6682313 | Compressed air powered pump priming system A pump primer for a pump on a fire truck uses a high-speed compressed air in a venturi in a compressed air chamber to generate a vacuum in a vacuum chamber to prime a pump, with an integral valve which separates the pump from the priming ejectors (venturi... | 01/27/2004 |
| 6672842 | Rotociprocating pump A hydraulic pump for use in a pump assembly of a railway track lubricating system includes a housing defining an intake chamber having an intake port, an outlet channel leading to an outlet port, a gear chamber containing interengaged gears, a discharge p... | 01/06/2004 |
| 6585493 | Hygienic self-priming centrifugal pump A hygienic, self-priming centrifugal pump (1) with a pump housing (4) provided with an inlet opening (2) and a pressure connecting piece (3), where an impeller wheel (7) can rotate inside said pump housing. The inlet opening (2) is connected with a liquid... | 07/01/2003 |
| 6475178 | Autopriming a micro-cassette while minimizing the formation of air bubbles in a pumping chamber A pump used to infuse a medical liquid into a patient is autoprimed under the control of a microprocessor that monitors and adjusts a priming sequence to minimize the accumulation of small air bubbles within a pumping chamber of the cassette. Small air bu... | 11/05/2002 |
| 6393839 | Pressurized medium delivery device Pressurized medium delivery device with a pump, a suction pipe, at least one pressure pipe and a pressurized medium supply volume in a pressurized medium supply container.... | 05/28/2002 |
| 6315524 | Pump system with vacuum source A pumping system is disclosed that includes a vacuum source. The pumping system includes a motor coupled to a centrifugal pump and a separator defining a reservoir in fluid communication with an inlet of the centrifugal pump. A water liquid ring vacuum pu... | 11/13/2001 |
| 6186746 | Fuel delivery pump for a fuel injection pump for internal combustion engines A fuel delivery pump for a fuel injection pump for internal combustion engines, including a pair of gears that mesh with each other and are driven to rotate in a pump chamber. The pair of gears deliver fuel from an intake chamber connected to a storage ta... | 02/13/2001 |
| 6187179 | Outside filter, in particular for aquarium An outside filter for an aquarium has a housing having an inner chamber, a removable cover for closing the inner chamber of the housing, a supply conduit for supplying water to be filtered into the inner chamber of the housing, a withdrawal conduit for wi... | 02/13/2001 |
| 6152689 | Self-priming type cetrifugal pump The invention provides a self-priming centrifugal pump capable of sucking up and pumping a highly viscous liquid containing muddy substances including a large amount of bubbles, and solid foreign matters, of preventing the flow of the liquid from the side... | 11/28/2000 |
| 6113354 | Fuel delivery device In a fuel delivery device for a motor vehicle a delivery pump (15) is provided in addition to a fuel pump (14). The delivery pump (15) serves to fill a surge baffle (5) and to drive a sucking jet pump (6). The fuel pump (14) draws in fuel from the surge b... | 09/05/2000 |
| 5984626 | Evacuation means for pumps The present invention is for an evacuation system which preferrably in its entirety is connected to and operates at the outlet side of a pump. The evacuation system is connected to the socket 5 by the connector 9 and one of the valves 15 or 16. In the eva... | 11/16/1999 |
| 5927952 | Apparatus for vacuum absorption with bypass passage reverse flow protection device An apparatus for vacuum absorption comprising a tank for accumulating circulating water; a waterway for circulating the circulating water by a pump disposed at an absorption inlet side of the tank; an aspirator disposed on the waterway; a reverse flow pre... | 07/27/1999 |
| 5806560 | Aircraft fuel transfer pump with auxiliary fuel line scavenge pump An improved fuel transfer pump is provided for relatively high flow transfer of fuel from one aircraft to another during an inflight refueling procedure, wherein the fuel transfer pump includes a jet-type scavenge pump for evacuating residual fuel from a ... | 09/15/1998 |
| 5782609 | Vacuum pump having different diameter rotors and a drive motor synchronization system A vacuum pump includes a plurality of rotors of different outer diameters accommodated in a housing so that a fluid transportation space is defined by the housing and the plural rotors. Rotary shafts are integrally formed with the respective rotors and a ... | 07/21/1998 |
| 5750023 | Self-priming pumping device for hydraulic circuits The pumping device comprises a pump driven by a motor having a stator and a permanent-magnet rotor located between polar expansions and connected to an impeller. A liquid suction duct and a liquid delivery duct are connected to the pump to define a hydrau... | 05/12/1998 |
| 5730585 | Apparatus for vacuum absorption with retracting reverse flow protection device An apparatus for vacuum absorption is provided which is quiet and simplified with maintaining an absorption power. The apparatus comprises: a tank for accumulating circulating water; a waterway for circulating the circulating water by a pump disposed at a... | 03/24/1998 |
| 5632603 | Slurry transfer and densification through vacuum pumping An apparatus for the transfer or conveyance of a slurry and the simultaneous densification thereof through the intermediary of vacuum pumping. Specifically, disclosed is an apparatus for the vacuum pumping of a slurry, particularly a zinc-containing slurr... | 05/27/1997 |
| 5620309 | Fluid pump priming system An apparatus for priming a non self-priming fluid pump or siphon device includes three components: an outlet valve, priming pump and inlet check valve. All three components are integrated into the casting of the fluid pump or are attached separately to an... | 04/15/1997 |
| 5599171 | Rotary, self-priming, liquip pump, and an impellers and shaft assembly therefor, and a flexible-impeller pump assembly A pump housing has a plurality of chambers formed therein, and a shaft journaled within, the shaft having impellers keyed thereto. Each chamber has one of the impellers disposed therein. One of the impellers is the primary liquid-working element, and has ... | 02/04/1997 |
| 5540569 | Multiple-chamber gear pump for ink jet printing Pump heads comprising at least two gear-pump chambers are disclosed. Each chamber comprises a housing which defines a corresponding pump cavity. Each cavity contains a driving gear and at least one driven gear and has a separate inlet and outlet. The pump... | 07/30/1996 |
| 5536147 | Vacuum priming system for centrifugal pumps A self-priming pump system including a vacuum priming unit and a liquid pumping unit, the pumping unit having an engine driven centrifugal pump with an intake conduit, the priming unit having a vacuum column with an internal well chamber and a vacuum cham... | 07/16/1996 |
| 5466131 | Multiple-chamber gear pump with hydraulically connected chambers Pump heads comprising at least two gear-pump chambers are disclosed. Each chamber comprises a housing which defines a corresponding pump cavity. Each cavity contains a driving gear and at least one driven gear and has a separate inlet and outlet. The pump... | 11/14/1995 |
