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| Number | Title | Issue Date |
| 7097435 | Device for draining and recharging a hermetic compressor with oil A method of draining and recharging a hermetic compressor with oil using a drainage assembly mounted in the compressor housing. The assembly includes a tube having a valve mounted at one end thereof with the second end of the tube located in the oil sump of the hous... | 08/29/2006 |
| 6929036 | Automotive fluid exchange system and method of use Replacing fluid in a sealed system interconnected by fluid conduction tubes with a lower port of a spent fluid container and a lower port of a new fluid container. A fluid pump is interconnected by the fluid conductors in such manner as to suck air from an upper por... | 08/16/2005 |
| 6009892 | Device for disposal of liquid media A device for disposal of liquid media such as coolant and lubricant fluids, containing production residues, such as chips from industrial processes in which these media are conveyed from at least one accumulation site through gutters and/or pipes to a rec... | 01/04/2000 |
| 5938408 | Magnetically controlled liquid transfer system A compressed air-actuated pump includes a venturi nozzle (24) to create a vacuum condition within a fluid-tight pump body or chamber (8) to pump in a liquid or slurry from a remote location. When a given level of liquid is pumped in, a float mechanism (69... | 08/17/1999 |
| 5611671 | Pumping system for groundwater sampling A pump assembly for the accurate transfer of water to an above ground elevation includes a tubular housing having an upper extremity equipped with a gas inlet port, and a lower extremity equipped with a water inlet port having a first check valve. A secon... | 03/18/1997 |
| 5520518 | Method of transferring fluent material with compressed gas A method of transferring fluent material transfers the material from a first pressure tank to a fluent material transfer destination by supplying compressed gas to the first tank through a compressor. The compressed gas is retained in the first tank for r... | 05/28/1996 |
| 5427505 | Engine coolant extractor/injector with double shut-off coupling An apparatus for extracting and injecting liquid coolant from and into a reservoir for an engine cooling system. The apparatus includes a storage tank for the liquid coolant, and an air pressure system for selectively applying fluid pressure to the tank e... | 06/27/1995 |
| 5425333 | Aspiration controlled collant transfer apparatus and method, for engine/radiator cooling systems In apparatus for control of liquid coolant flow to and from an engine and radiator coolant system, comprising a closed tank to receive the coolant; a first line extending at the exterior of the tank, and also communicating with the tank interior, the firs... | 06/20/1995 |
| 5329982 | Method and apparatus for internal combustion engine coolant extractor/injector with coupling An internal combustion engine coolant extractor/injector with coupling comprises a tank assembly, an air pressure control assembly and a hose assembly. The air pressure control assembly creates a vacuum in the tank assembly by using the venturi effect. Th... | 07/19/1994 |
| 5141406 | High-lift tubular pump A tubular pump comprises a "tube-within-a-tube" having a lower end adapted to be submerged in a liquid that is under a pressure p1, for example a pressure of one atmosphere. The inner and outer tubes are in communication with each other adjacen... | 08/25/1992 |
| 5078579 | Side entry fish pump A wet pump for pumping fish from a first fish receptacle to a second receptacle displaced from the first receptacle. The wet pump includes a wet pump tank into which the fish are initially pumped, a pump suction line connected to the side of the tank and ... | 01/07/1992 |
| 5042518 | Liquid elimination system for vacuum line Apparatus and method for draining liquid from a vacuum line without interrupting the vacuum. The apparatus consists of a storage tank attached to a vacuum line by a drainage pipe having a one-way valve in the pipe permitting the flow of liquids away from ... | 08/27/1991 |
| 4828461 | Apparatus for metering flowable materials in sand core making machines Apparatus for transferring metered quantities of a flowable bonding agent from a tank into a mixer of a sand core making machine has an upright tubular vessel into which the bonding agent is drawn from the tank by a suction pump and a pressure pump which ... | 05/09/1989 |
| 4801246 | Device for elevating liquids with a plurality of intermediate containers communicating with one another In a device for elevating liquids a heat exchanging vessel to be neated by an exterior source of heat is connected with a discharge pipe arranged to elevate doses of liquid, so that for performing a thermodynamic cycle the liquid to be elevated is used as... | 01/31/1989 |
| 4770611 | Product pump assembly A product pump assembly including a product pump having a product receiving inlet, a product discharge outlet, a product chamber, and an air port. A cone-shaped feed valve in the product chamber is forced upwards against the inlet thereby sealing it when ... | 09/13/1988 |
| 4640322 | Method and apparatus for filling a receptacle with a material A machine for applying sub-atmospheric pressure through a filter to pull material from a hopper laterally into a non-rotatable chamber at a presettable volume and after the chamber is filled blowing the material out of the chamber through the filter out o... | 02/03/1987 |
| 4632157 | Air compressor operated vacuum system for tire servicing vehicles A service truck for servicing tires on off the road vehicles such as agricultural tractors includes an engine and an air compressor selectively operable by the engine. The vehicle includes a liquid tank for receiving and temporarily holding a liquid remov... | 12/30/1986 |
| 4613412 | Evacuator system and process for an evaporative recovery system An evacuator system employed in an evaporative waste recovery system uses an eductor to create a partial vacuum. The partial vacuum is selectively employed to evacuate concentrate and distillate from an evaporator unit for transferal to respective concent... | 09/23/1986 |
| 4606703 | Fluidic pumping systems with control means responsive to liquid level A fluidic pumping system comprises a reverse flow diverter positioned below the level of a liquid to be pumped and inserted between a charge vessel and a delivery pipe. A control system including pressure-responsive devices effects alternate pressurizing ... | 08/19/1986 |
| 4599048 | Industrial suction apparatus Suction apparatus, particularly designed for handling liquid and semi-liquid materials in an industrial context, comprises a suction tank provided with simultaneously operable exhauster and discharge pumps each driven by a common compressed air source. Th... | 07/08/1986 |
| 4521162 | Pumping system A fluidic pumping system comprises a reverse flow diverter positioned below the level of a liquid to be pumped and inserted between a charge vessel and a delivery pipe. Control means including signal generating means, conveniently an ultrasonic transducer... | 06/04/1985 |
| 4507056 | Liquid circulation apparatus and method Method and apparatus for reducing the resistance to the flow of a liquid from an upper liquid supply container to a lower vacuum receptor tank through an interconnecting port while permitting air displaced from said tank to enter said container through sa... | 03/26/1985 |
| 4408960 | Pneumatic method and apparatus for circulating liquids A pneumatic method and apparatus for causing the rapid recirculation of a liquid between a plurality of containers 10, 11 by adjusting the pressure of a gas exerted within each of said containers to superatmospheric, atmospheric and subatmospheric pressur... | 10/11/1983 |
| 4057364 | Fluid transfer systems and valves therefor A pumping system intended especially for highly contaminated liquids uses an air pump for drawing liquid into or discharging the liquid from a vessel by creating respectively a vacuum or a pressurized condition within the vessel. A special valve device is... | 11/08/1977 |
