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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 |
| 8043079 | Hermetic compressor and refrigeration cycle device having the same A hermetic compressor and a refrigeration cycle device having the same are provided. An oil separator is installed either outside or inside of a casing to separate oil from a discharged refrigerant and an oil pump driven by a driving force of a motor is used to reco... | 10/25/2011 |
| 7959423 | Vacuum pump with a lubricant pump A vacuum pump includes a quick-rotatable component a bearing for supporting the quick-rotatable component and a lubricant pump for feeding lubricant to the bearing and having a rotor, with the bearing and the lubricant pump forming parts of a closed lubrication circ... | 06/14/2011 |
| 7717688 | Oil pump for a compressor An oil pump for a compressor is provided. The oil pump includes a pump body, a driving shaft coupled to the pump body, with a supply passage extending therethrough, and a plurality of pumping members which rotate with the driving shaft. Fluids such as oil are inhale... | 05/18/2010 |
| 7632081 | Oil retrieving structure for a compressor A scroll compressor is provided. The scroll compressor includes a casing, an oil pump, an oil retrieving port, and an oil retrieving unit. The casing has a fluid storage area in a lower portion thereof. The oil pump is provided in the lower portion of the casing, an... | 12/15/2009 |
| 7513760 | Oil pump of scroll compressor An oil pump of a scroll compressor is provided. The oil pump includes a pump body to which a drive shaft is inserted; a gear unit inserted to a lower side of the pump body and rotating by the rotation of the drive shaft; and a pump cover coupled to a lower side of t... | 04/07/2009 |
| 7494329 | Oil pump for a compressor An oil pump for a compressor is provided. The oil pump includes a pump body coupled to a driving shaft, and a pumping member coupled to the pump body so as to define a pumping part and a pump cover is coupled to a lower side of the pump body therebetween. A lower su... | 02/24/2009 |
| 7458790 | Vacuum pump with improved oil lubrication A vacuum pump includes a housing assembly having an oil-reservoir chamber in which a lubricating oil is stored; a pair of screw rotors disposed in the housing assembly and engaged with each other; a pair of rotary shafts connected to the rotors, respectively; a plur... | 12/02/2008 |
| 7442018 | Compressor having an oil residue pool A compressor comprises, in a container body, an electric element, and a compressive element driven by the electric element. An oil storage is provided in the bottom, and an oil pump is provided to suck up oil from the oil storage. The oil pump includes a cylinder fi... | 10/28/2008 |
| 7413423 | Compressor having a lubrication shield A cup-shaped shield surrounds a counter weight on the lower end of a rotor of the refrigeration compressor. The shield advantageously restricts lubricant flow to the rotating lower end of the rotor whereby power consumption of the motor is reduced. The shield may be... | 08/19/2008 |
| 7390180 | Oil pumping device of hermetic compressor A hermetic compressor uses an oil pump that includes a trochoid gear. Therefore, regardless of the rotation speed of a driving motor of the compressor, a sufficient amount of oil can always be pumped. The oil pump unit may include a plurality of suction holes with o... | 06/24/2008 |
| 7381040 | Compressor having pressure controlled for improving oil distribution A compressor having a driving element stored in a sealed container of the compressor, and a compression element driven by a rotary shaft of the driving element. The compression element has a cylinder in which a compression space is constituted; a suction port and a ... | 06/03/2008 |
| 7371058 | Oil feeding propeller of scroll compressor An oil feeding propeller of a scroll compressor for preventing deterioration of oil feeding generated when a rotation shaft is rotated in reverse is disclosed. The propeller is tightly fitted into the lower side of the oil passage of the rotation shaft, sucks oil in... | 05/13/2008 |
| 7351045 | Rotational inhibitor for compressor lubricant A compressor comprises an oil storage provided in the bottom of a container body. An oil cup is fixed in communication with the oil storage. An oil pump is attached to the lower end of a shaft and inserted into the oil cup. A rotation inhibitor is provided including... | 04/01/2008 |
| 7311672 | Device for biopsy of tumors A device and method of use for securing and coring of tumors within the body during a biopsy of the tumor, specifically breast tumors. An adhesion probe for securing the tumor is described. The probe secures the tumor by piercing the tumor and providing a coolant to... | 12/25/2007 |
| 7229257 | Horizontal type compressor A horizontal type compressor comprising: a differential pressure plate for dividing an inside of a casing into a high pressure chamber and a lower pressure chamber and thus maintaining an oil level of the high pressure chamber to be higher than that of the lower pre... | 06/12/2007 |
| 7186100 | Variable capacity rotary compressor A variable capacity rotary compressor allowing oil to be smoothly supplied to compressing elements, regardless of a rotating direction of a rotating shaft. The variable capacity rotary compressor includes a rotating shaft which is rotated in a forward direction or a... | 03/06/2007 |
| 7186095 | Compressor mounting bracket and method of making A mounting bracket for a compressor. The mounting bracket includes a mounting member and an elongate bracing member. The mounting member is secured to the housing of the compressor has a central support section in substantial registry with the housing. The mounting ... | 03/06/2007 |
| 7163383 | Compressor having alignment bushings and assembly method A compressor assembly including a compression mechanism having a main bearing and a plurality of first pilot holes, and an electric motor comprising a rotor disposed within a stator. The stator has a plurality of second and third pilot holes. Each of the first pilot... | 01/16/2007 |
| 7156195 | Cooling system for electric motor of vehicle A cooling system for an electric motor of a vehicle comprises an electric motor which drives the vehicle, a reduction gear which adjusts a driving force of an output shaft of the electric motor and transmits the driving force to a drive shaft, and an in-shaft refrig... | 01/02/2007 |
| 7124585 | Scroll-type expander having heating structure and scroll-type heat exchange system employing the expander The present invention provides a scroll-type expander that simultaneously performs expansion and re-heating such that efficient expansion is realized and there is no reduction in efficiency caused by pressure loss occurring during the supply of an working fluid to t... | 10/24/2006 |
| 7118361 | Rotary pistons A rotary piston for use in pumps or motors, the piston having a radially movable vanes seated within the pumps rotor. The vanes are biased outwardly and forced inwardly by a cam action of the interior wall of the housing of the piston. Operation of the piston may be... | 10/10/2006 |
| 7097683 | Filter element with a drainage tube A filter element (15), especially suitable for separating entrained oil from an air stream, having a drainage device (23) including a drainage tube (22) which is connected to an upper end disk (16) of the filter element (15) by a c... | 08/29/2006 |
| 7056108 | Cooled screw-type vacuum pump A screw-type vacuum pump (1) includes a pump housing (2, 6) with rotors (3, 4). A liquid cooling system cools the rotors and a drive motor (9). In order to improve the cooling of said pump, an external air-flow impelled cooling system is ... | 06/06/2006 |
| 7040880 | Horizontal rotary compressor A horizontal rotary compressor is configured such that an electrically powered compressor body is accommodated in a horizontally long hermetic receptacle in which a lubricating oil is accumulatively preserved, an interior of the hermetic receptacle is partitioned by... | 05/09/2006 |
| 7021425 | Closed type electric compressor A sealed electric compressor for use in, for example, an electric refrigerator, generates a little noise and can feed any moving part of its compressing element with refrigerator lubricant. An oil pickup tube is joined by insertion to the lowermost end of a crank sh... | 04/04/2006 |
| 6969242 | Compressor To counter downstream oil infiltration through a shaft seal, a small portion of the compressed fluid is diverted from downstream to upstream through a passageway in a rotor. The diverted fluid is introduced to a space at a downstream side of the seal. An exemplary i... | 11/29/2005 |
| 6964559 | Two shaft vacuum pump with cantilevered rotors A vacuum pump (1) comprising a pump chamber casing (5) accommodating two co-operating rotors (2, 3) which are respectively arranged on a shaft (8, 9). A bearing/gear chamber (6) is disposed adjacent to the pump chamber casing (5... | 11/15/2005 |
| 6866490 | Water-injected screw compressor The invention relates to a water-injected screw compressor which comprises a compressor element (1) with an interior space (3), a suction conduit (7) which connects to an inlet part (6), situated at the top of this interior space (3 | 03/15/2005 |
| 6758660 | Screw vacuum pump with a coolant circuit A screw vacuum pump (1) has shafts (7, 8) and rotors (3, 4) secured to the shafts. Each rotor has a central hollow chamber (31) which receives the shaft or contains in built-in components rotating along with the rotor to define a relative... | 07/06/2004 |
| 6752605 | Horizontal two stage rotary compressor with a bearing-driven lubrication structure A hermetic rotary compressor including a housing having an oil sump formed therein; a stationary shaft fixedly mounted in the housing, a longitudinal bore formed in the shaft; and a motor mounted in the housing, the motor having a rotor and a stator, the rotor havin... | 06/22/2004 |
| 6688863 | Oil leak prevention structure of vacuum pump A vacuum pump draws gas by operating a gas conveying body in a pump chamber through rotation of a rotary shaft. The vacuum pump has an oil housing member, a stopper and a circumferential wall surface. The oil housing member defines an oil zone adjacent to... | 02/10/2004 |
| 6663367 | Shaft seal structure of vacuum pumps A Roots pump rotates a plurality of rotors by a pair of rotary shafts to draw gas. Each rotary shaft extends through a rear housing member of the Roots pump. An annular shaft seal is fitted around each rotary shaft and is received in a recess formed in th... | 12/16/2003 |
| 6659747 | Shaft seal structure of vacuum pumps A Roots pump rotates a plurality of rotors by a pair of rotary shafts to draw gas. Each rotary shaft extends through a rear housing member of the Roots pump. An annular shaft seal is fitted around each rotary shaft and is received in a recess formed in th... | 12/09/2003 |
| 6551082 | Oil free type screw compressor In an oil-free type screw compressor including a low-pressure-stage compressor main body and a high-pressure-stage compressor main body, when the power of an motor is transmitted to an oil pump via a gear to start the pump, the lubrication oil stored in a... | 04/22/2003 |
| 6544020 | Cooled screw vacuum pump A cooled screw vacuum pump has a housing (4) two rotating systems (5, 6) consisting each of a screw rotor (5) and a shaft (6), a floating device supporting the rotors having, on each shaft, two mutually spaced bearings (7, 8) and an empty space (31) arran... | 04/08/2003 |
| 6503070 | Rotary piston engine having an oil system for lubrication and cooling A trochoidal design rotary piston engine design has a rotary piston housing with a double curve inner contour and triangular type rotary pistons. Sliding bearings distribute lubricating oil from a pressure cycle into a high pressure circuit and a low pres... | 01/07/2003 |
| 6497563 | Dry-compressing screw pump having cooling medium through hollow rotor spindles A dry-compressing screw pump in the form of a two-shaft positive displacement pump. A first and a second rotor spindle are disposed parallel to each other. The rotor spindles are hollow. A cooling medium is fed at a first front face of the rotor spindles ... | 12/24/2002 |
| 6474965 | Rotary piston engine having a cogwheel pump and an oil metering pump A trochoidal design rotary piston engine design has an external axis cogwheel oil pump which has a smaller diameter drive cogwheel which drives a larger diameter size cogwheel where the larger diameter size cogwheel is coupled to an oil-metering pump. The... | 11/05/2002 |
| 6416302 | Rotary helical screw-type compressor having a thermally separated oil supply container A screw compressor has a gear housing (1) from one side of which the rotor housing (3) containing the two screw rotors freely projecting outward. An oil supply container (7) is also located freely projecting out from the gear housing (1) approximately par... | 07/09/2002 |
| 6416296 | Reciprocating hermetic compressor A reciprocating hermetic compressor, of the type including a rotor with permanent magnets and having its tubular vertical shaft (5) provided radially externally to the internal surface thereof with at least one axial channel (10) of oil conduction, having... | 07/09/2002 |
