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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7114928 | High-pressure fuel pump and assembly structure of high-pressure pump A high pressure pump for decreasing an initial axial force of a clamping bolt and preventing distortion of a sealing surface and a cylinder form. The high pressure pump has an intermediate member including a cylinder body. The cylinder body has a pressurizing chambe... | 10/03/2006 |
| 6676387 | Metering pump with a rotary valve responsive to electrical signals from the contact between a fluid responsive shuttle and dual probes A metering device contains a rotor which defines elongate chamber, there being a shuttle contained within the chamber movable between two terminal end positions. Frusto-conical surfaces defined on the rotor cooperate with annular members defining correspo... | 01/13/2004 |
| 6622612 | Pump, particularly plunger pump A pump, particularly a plunger pump, comprises a crank mechanism oscillating a plunger in a housing and an elastic sealing device fastened to the plunger. The sealing device provides a pressure-tight sealing with respect to a lower housing space containin... | 09/23/2003 |
| 6318644 | Fluid transfer pump wash-out apparatus and method A fluid transfer pump wash-out apparatus is provided to facilitate cleaning of fluid transfer pump system components. The wash-out apparatus is adapted for temporary or permanent insertion between at least one pump liquid source pick-up point and a pump i... | 11/20/2001 |
| 6318977 | Reciprocating compressor with auxiliary port A reciprocating compressor that includes an auxiliary port 38 in series with a check valve 40 to move fluid at an intermediate pressure that is between the main suction and discharge pressures. Piston 31 normally covers the auxiliary port during a portion... | 11/20/2001 |
| 6116869 | Pumping process and system for mixing liquids The present invention is a pumping system which mixes liquids with a well-controlled proportioning and flow rate. The pumping system according to the invention comprises a liquid mixing device (MX) placed upstream from a pump (P). The liquids are taken fr... | 09/12/2000 |
| 6116870 | High pressure pump with solenoid operated valve A high pressure pump which has a working chamber, which on the one hand, is connected to a low pressure circuit via a solenoid valve and on the other hand, is connected to a high pressure reservoir via a check valve. The solenoid valve has a spring-loaded... | 09/12/2000 |
| 5984651 | Hydraulic brake system The present invention relates to a hydraulic brake system which operates by the feedback principle during brake slip control operations and includes a self-priming pump that aspirates pressure fluid from a pressure fluid reservoir for traction slip contro... | 11/16/1999 |
| 5915927 | Reciprocating pump for generating fluid pressure A plunger pump includes a piston which is driven for reciprocatory motion and associated with a check valve. A space within a cylinder is partitioned by a piston 1p into a first space A which communicates with a discharge port 1ep and a second space B whi... | 06/29/1999 |
| 5894609 | Safety system for multiple drain pools A method and apparatus for alternately providing and releasing suction to a plurality of pool drains or if desired alternately providing suction and liquid under pressure to pool drains to prevent one from becoming stuck to the drains. This includes intro... | 04/20/1999 |
| 5741710 | Reaction chamber and a method for generating a gaseous sample based on the use thereof The invention relates to a reaction chamber, which includes a cylindrical vessel, with at one end, at least one inlet or outlet tube or lead-through fitted with a valve for a liquid or gaseous component. The other end of the vessel is open. The reaction c... | 04/21/1998 |
| 5718570 | Rotary control valve for a piston pump A reciprocating piston pump provides pulsation free delivery of liquid. It is suitable for use in compact environments or for the delivery of small amounts of liquid, as in chromatographic analysis devices. The pump includes two pistons with pumping chamb... | 02/17/1998 |
| 5707221 | Method of plural zone pumping utilizing controlled individual pump inlet in each zone The present invention relates to a pumping method utilizing two suction inlet holes spaced a predetermined distance apart by an extension robe. In a variant, the pumping method utilizes two pump barrels cooperating each with the two inlet holes. In anothe... | 01/13/1998 |
| 5653876 | High pressure pump for fine liquid metering In order to reduce the overall size of serial pump arrangements, several block-disk-like building elements are used. These building elements are made of a non-metallic material and lie against each other with their control surfaces in a sandwich like stac... | 08/05/1997 |
| 5531078 | Low volume inlet reciprocating compressor for dual evaporator refrigeration system A low volume inlet reciprocating compressor suitable for use in a dual evaporator refrigeration cycle. The compressor includes a cylinder having an inlet port and an outlet port disposed in a housing. A flexible conduit having an inlet passage formed ther... | 07/02/1996 |
| 5374168 | Reciprocating piston fluid pump A reciprocating piston fluid pump according to the present invention comprising: a pump driving section including a cam operated by an engine and a roller driven by the cam, the roller being provided at a lower end of a piston rod; a piston provided at an... | 12/20/1994 |
| 5338166 | Evacuation pump system for both rigid and flexible containers An improved evacuation pump system uniquely designed to evacuate both lidded rigid containers and sealable flexible containers. A vacuum cup fixed to one end of a reciprocating piston pump attaches to the lid of rigid containers for their evacuation and a... | 08/16/1994 |
| 5335734 | Reciprocating additive mixing pump apparatus and method A pump apparatus dispenses a liquid and additive mixture and has a pump cylinder with intake and discharge ports with associated valves. An additive supply communicates with the pump cylinder to supply additive with liquid drawn into the pump during an in... | 08/09/1994 |
| 5299917 | Evacuation pump system with check valves for both rigid and flexible containers An improved evacuation pump system with dual inlet check valves uniquely designed to evacuate both lidded rigid containers and sealable flexible containers. A vacuum cup fixed to one end of a reciprocating piston pump attaches to the lid of rigid containe... | 04/05/1994 |
| 5219455 | Pump for ice-cream machines A pump with piston for feeding liquid mixture for ice-cream from a tank to a whipping cylinder in a machine for the production of soft-type ice-cream, comprises valve means to connect in an adjustable way the cylinder of the pump with ambient air; a check... | 06/15/1993 |
| 5158675 | Gradient system To supply a programmed gradient to a high pressure pump for introduction into a column, a mixer, degasser and accumulator communicates with the high pressure pump to supply fluid thereto, having a volume no more than 150 times the chamber volume of the hi... | 10/27/1992 |
| 5062774 | Solution pumping system including disposable pump cassette A solution pumping system including a disposable pump cassette is disclosed, with the system configured for efficient and accurate preparation of parenteral admisture solutions. The system includes a pump driver having a reciprocable pump plunger and a pl... | 11/05/1991 |
| 5017105 | Metering pump A metering pump comprises a diaphragm chamber with a diaphragm, a suction conduit connecting the diaphragm chamber with a metering agent tank, a pump cylinder defining a cylinder space and having an inlet connected to the diaphragm chamber and an outlet c... | 05/21/1991 |
| 5009577 | Rotary compressor of variable displacement type A rotary compressor of variable displacement type comprises a cylinder, a rotor accommodated in the cylinder in an eccentric relationship therewith, at least one vane incorporated in the rotor through an outer periphery of the latter and movable relative ... | 04/23/1991 |
| 4975028 | Pump apparatus for evacuating containers Apparatus for evacuating a rigid container using a two-stroke reciprocating-piston pump having an air evacuating vacuum cup which is to be applied to the container lid. The pump cylinder houses a reciprocating piston-check-valve. An adhesive-tape check va... | 12/04/1990 |
| 4915602 | Pump for pumping a fluid comprising a liquified gas The pump possesses an inlet and an outlet for the fluid to be pumped, a housing bounded at one end by an end member and enclosing an inner space, in which a piston is displaceably guide. The inlet is connected, by way of the end members and by way of a fi... | 04/10/1990 |
| 4824342 | Chemical injector system for piston pumps An injector device for a plunger-type pump of the type having one or more cylinders, an intake valve for each cylinder operatively disposed between the pump's low pressure inlet port and each of its cylinders and outlet valve(s) for each cylinder operativ... | 04/25/1989 |
| 4723895 | Method of and apparatus for effecting volume control of compressor A method of and an apparatus for effecting volume control suitable for use with a compressor for compressing a compressible fluid, such as a refrigerant of the refrigeration cycle, wherein a suction fluid is forcedly closed while a suction step is being p... | 02/09/1988 |
| 4673296 | Mixing pump for transport and effective mixing (homogenization) of two or more liquids (gases) with a constant, but adjustable, ratio of the liquids The invention is drawn to a mixing pump which can transport and effectively mix (homogenize) two or more liquids (or gases) in all ratios between the pure components. The ratio is constant, but is adjustable. This is effected by a double-acting pump cylin... | 06/16/1987 |
| 4577606 | Pressure valve assembly for fuel injection pumps In a pressure valve inserted in a fuel supply conduit between a fuel injection pump and an injection vavle of the internal combustion chamber and comprising a valve member and a locking member cooperating with the valve member and opening in the direction... | 03/25/1986 |
| 4573932 | Electrical fluid pumping device including first and second pumping portions A marine propulsion device including a fluid pumping device comprising a first mechanism for pumping fluid comprising a pump housing defining a recess, a movable wall which is in the recess and which cooperates with the recess to define a variable volume ... | 03/04/1986 |
| 4552515 | Handy tube pump A tube pump for use in pumping a liquid from one place, such as a tank, to another, such as a vessel, the tube pump comprising a first tube for sucking a liquid from a tank; a second tube for allowing the sucked liquid to discharge therethrough; a connect... | 11/12/1985 |
| 4523903 | Dosing pump A dosing pump (1) is created allowing to accurately dose a medium to be dosed as a function of time or of a flow rate. The dosing pump (1) utilizes a predelivery obtained by a diaphragm (11) as well as a piston-cylinder-pump for dosing. The pump cylinder ... | 06/18/1985 |
| 4515537 | Dosing pump A dosing pump (1) is produced, with which a precise dosing is possible as a function of the time or of a flow rate. The dosing pump (1) operates with a preliminary transport obtained by means of a diaphragm (11). The stroke volume of the diaphragm (11) is... | 05/07/1985 |
| 4512727 | Fuel injection pump of the rotary distributor type A fuel injection pump of the rotary distributor type includes a rotary distributor member having a bore in which is slidable a plunger which can be actuated by a cam lobe. A stop ring is provided to limit the outward movement of the plunger by fuel which ... | 04/23/1985 |
| 4502834 | Apparatus and method of throttling centrifugal pump liquid output A first control assembly is provided operative to supply gas from a supply of gas under pressure to the inlet of a centrifugal liquid pump at increasing and decreasing rates responsive to decreases and increases in the pressure of liquid discharge from th... | 03/05/1985 |
| 4491150 | Outdoor water holding and pumping system An outdoor water holding and pumping system comprising a water tank into which is recessed a pump housing such that water in the tank surrounds and insulates the housing. A pump is disposed in the pump housing for pumping water from the tank to a desired ... | 01/01/1985 |
| 4416596 | Fluid-transfer system and method A fluid-transfer system has two pistons movable within a barrel so that the ends of the piston faces can move together or apart, the barrel having at least two openings therein for transfer of fluid into and out of said barrel. The pistons can be controll... | 11/22/1983 |
| 4412428 | Apparatus for producing and dispensing an aerated frozen confection An apparatus for producing and dispensing an aerated frozen confection in which a pump is mounted in the liquid ingredients reservoir of the apparatus and operates to pump a mixture of air and liquid ingredients, in selected proportions, to the freezer co... | 11/01/1983 |
| 4407641 | Electrically-driven rotary vane pump The pump comprises a pump stator (5), an electric motor stator (4), and a rotor (6) that constitutes the rotor both of the pump and of the electric motor. The pump stator comprises a tubular non-magnetic lining to the electric motor stator, and the rotor ... | 10/04/1983 |
