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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 |
| 7276052 | Medical aspirator A medical aspirator including an aspiration port, a reciprocating type electric pump for performing vacuum aspiration, a ventilation path which connects the aspiration port and the electric pump, an exhaust port, and an atmospheric pressure obtaining release valve f... | 10/02/2007 |
| 7124966 | Fuel injector check valve A high pressure unit fuel injector includes a member with a fuel delivery opening to be intermittently supplied with high pressure fuel and a valve seat encircling the fuel delivery opening. A valve cage includes a check-valve chamber adjacent the valve seat. The ch... | 10/24/2006 |
| 7063520 | Suction valve assembly of reciprocating compressor In a reciprocating compressor including a piston slide-inserted into the compression space of the cylinder, having a gas path therein, inducing a fluid into the compression space through the gas path and varying a volume of the compression space while performing a l... | 06/20/2006 |
| 7037081 | High pressure reciprocating pump and control of the same Pumping requirements for chromatograph applications are for constant flow at high and variable pressures and for accurate programmable control of liquid composition. A two-cylinder pump, pumping system, and associated controls provide an accurate, fixed flow rate. A... | 05/02/2006 |
| 7029245 | Blood pumping unit, with a coplanar disk inlet valve and an annular outlet valve A unit for pumping fluid, particularly blood, is provided with an enclosure that has two half-shells and an elastic membrane fixed perimetrically to the enclosure in order to divide its space into two parts. One of the half-shells is provided with valves that are lo... | 04/18/2006 |
| 6997683 | High pressure reciprocating pump and control of the same Pumping for chromatograph applications calls for constant flow at high pressures and for accurate control of liquid composition. A two-cylinder pump, and associated controls provide an accurate, fixed flow rate. During the initial portion of the pumping stroke of a ... | 02/14/2006 |
| 6712591 | Discharge valve of a hermetic compressor using stopper and weight driven disc valve A discharge valve of a hermetic compressor includes a valve plate disposed on a cylinder head that draws in and discharges refrigerant according to reciprocal movement of a piston, and the discharge valve having a discharge hole formed therein through which refriger... | 03/30/2004 |
| 4854827 | Sanitary pump station A sanitary pump station for removing waste from recreational vehicle and pleasure craft waste tanks is provided. A pump station housing encloses a motor driven pump provided with at least a pair of one-way valve arrangements in both inlet and outlets to t... | 08/08/1989 |
| 4830582 | Rotary type compressing apparatus employing exhaust gas control valve In a rotary type compressing apparatus, a check valve is positioned in a refrigerant gas inhalation unit, and an exhaust valve is positioned in a refrigerant gas exhaust unit. In addition, a control valve is employed at an inlet section of an exhaust pipe... | 05/16/1989 |
| 4621567 | Beam pump A beam pump for use as a chemical injection pump in conjunction with a walking beam and having a pump shaft which is slidable within a pump body. The shaft is pivotally connected to a lever bar which is drivingly connected to the walking beam. A pivot sup... | 11/11/1986 |
| 4457367 | Downhole pump and testing apparatus The downhole pump of the present invention includes a piston housing with a plurality of piston assemblies disposed in the piston housing. Each piston assembly includes a piston reciprocatingly disposed in a cylinder. A valve body is connected to the pist... | 07/03/1984 |
| 4392791 | Pressure pumping and priming pump apparatus A pump apparatus for transferring precise amounts of fluid from a container to a patient has a defined volume pump chamber divided by a first diaphragm to define a first chamber and a second chamber. A pumped fluid enters the first chamber through a one-w... | 07/12/1983 |
| 4303096 | Valve for fuel pumping apparatus A combined delivery and damping valve unit for a fuel system of a compression ignition engine comprises a body having a bore including a wider portion and a narrower portion. A spring abutment for the spring biasing the delivery valve member serves as a s... | 12/01/1981 |
| 4265601 | Three valve precision pump apparatus with head pressure flowthrough protection A pumping apparatus for moving a pumped fluid from a reservoir to a destination in response to variations in the pressure of a pumping fluid includes a pump housing; a pumping chamber; an input passageway; an exit passageway; and a passageway network betw... | 05/05/1981 |
| 4260342 | Dual-piston reciprocating pump assembly The invention is directed to a dual-piston reciprocating pump assembly which includes two opposed substantially identical reciprocating pumps, a housing within which the pumps are mounted, a cam mounted on a cam shaft which is driven through a coupling by... | 04/07/1981 |
| 4199306 | Method and apparatus for compressing gas A method and apparatus for pumping combustible gases at high pressure without raising the gas to its combustion temperature, the apparatus including a piston-type pump having an intake chamber communicating with a cylinder through intake valves, a dischar... | 04/22/1980 |
| 4147478 | Secondary pump feed apparatus Apparatus for connecting to a pump inlet where a first inlet feedpipe is attached including a second inlet feedpipe tap having a one-way check valve, and a resilient orifice member in the first inlet feedpipe upstream of the tap, whereby the orifice size ... | 04/03/1979 |
| 4054116 | Emergency fuel line closure An automobile engine driven fuel pump operates to cause alternate fuel pumping and fuel vacuum cycles in a fuel pumping chamber and concurrent alternate air vacuum and air pumping cycles respectively in an air pumping chamber and also to maintain a normal... | 10/18/1977 |
| 4012174 | Fuel priming pump The invention is concerned with an improvement in a manually activated fuel priming pump for an internal combustion engine comprising a housing having a barrel communicating at its lower end with a flange disposed transversely to the barrel. A plunger com... | 03/15/1977 |
| 3969041 | Shut-off valve for automotive fuel flow A shut-off valve for the automotive fuel system is operable to shut off the fuel flow whenever a positive pressure exists in the fuel line between the fuel tank and the shut-off valve. The shut-off valve may be employed in combination with a fuel pump or ... | 07/13/1976 |
| 3936235 | Fuel oil supply means The invention relates to a fuel oil supply assembly of the type having a magnetic pump and an armature for driving a pump element or piston which is a part of a resilient oscillatory system. A flow restricting pressure regulating vlave in the delivery lin... | 02/03/1976 |
