Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8177525 | Expander-integrated compressor An expander-integrated compressor 200A includes a closed casing 1, a compression mechanism 2, an expansion mechanism 3, a shaft 5, an oil pump 6, and a heat insulating structure 30A. The oil pump 6 is disposed ... | 05/15/2012 |
| 8147217 | Pump device The invention relates to a pump device for feeding a delivery medium out of a deep borehole which leads from a floor level into the interior of the earth, which deep borehole is provided at least in sections with borehole piping, having a pump and having a motor whi... | 04/03/2012 |
| 7360312 | Bush cutter A bush cutter has a driving bevel gear housed in a first box constituting a part of a gearbox, and a driven bevel gear housed in a second box and engaging the driving bevel gear. The driving bevel gear is rotatably retained in a first bearing. The first bearing is s... | 04/22/2008 |
| 7331482 | Dispense pump with heated pump housing and heated material reservoir A heated dispense pump overcomes the limitations of conventional systems providing for reliable and efficient heating of the dispensed material in a system that is compact, lightweight, and accurate. A pump housing and cartridge body are formed of a thermally conduc... | 02/19/2008 |
| 7287301 | Utility vacuum A utility vacuum that may be configured to employ a disposable bag or removable and reusable container for the collection of dirt and debris that are drawn into the utility vacuum. The utility vacuum may employ one or more movable legs that are movable between an ex... | 10/30/2007 |
| 7267523 | Composite shaft A turbine shaft may be used to remove a heat load from pliant bearings without requiring the use of a process fluid for cooling the turbine shaft. The turbine shaft comprises a heat conductive sleeve disposed between an outer surface of a tie rod shaft and an inner ... | 09/11/2007 |
| 7193341 | Turbomachine for low-temperature applications A turbomachine for low-temperature applications, has a rotor shaft; at least one rotor disk that is arranged in overhung manner at one shaft end of the rotor shaft; an electric machine having a stator having windings, and an electric rotor arranged on the rotor shaf... | 03/20/2007 |
| 7182585 | Electrically driven flow compressor The invention relates to an electrically driven flow compressor comprising a drive (2, 3)—and a flow compressor and a converter (5) for electrical supply and control of the drive unit (2, 3).According to the invention, the converter (5)... | 02/27/2007 |
| 7174719 | Gas turbine engine with seal assembly A gas turbine engine includes an interstage seal assembly positioned in a plenum between the compressor section and turbine section. The seal assembly includes an annular seal member positioned in the plenum adjacent to the compressor section for restraining a fluid... | 02/13/2007 |
| 7108266 | Fan cooled seal seat A seal assembly including a rotatable seal head subassembly also includes a fan that rotates with the seal head assembly, with the fan drawing air through a pump housing for purposes of cooling. ... | 09/19/2006 |
| 7083395 | Pump system for pumping liquefied gases Under one aspect of the present invention, a liquefied gas pump assembly is coupleable to a source of liquefied gas. A cooling assembly is positioned generally adjacent to a pump module. The cooling assembly has a converging pump-head-receiving aperture, a fluid inl... | 08/01/2006 |
| 7061155 | Rotor device capable of dissipating heat and resisting foreign objects A rotor device capable of dissipating heat and resisting foreign objects includes a hub and a shield case. The hub has a closed wall and a hub wall connecting with the closed wall and the closed wall at least has a hub hole. The shield case is mounted in the hub and... | 06/13/2006 |
| 7037083 | Radiation shielding coating A vacuum conduit connected to a vacuum pump has a shield surface which absorbs radiation to reduce the total radiation falling on the vacuum pump. The vacuum system includes the vacuum conduit connected between a process chamber and the vacuum pump and a surface tre... | 05/02/2006 |
| 7021908 | Thermal protection shield for a rotating shaft A thermal protection shield for a rotating shaft of a primary coolant pump shaft of a nuclear power station includes, in the thermal transition region between the hot fluid and the cold fluid, a ring of nickel alloy shrunk onto the shaft. An external ring of austeni... | 04/04/2006 |
| 6863509 | Split seal plate with integral brush seal A segmented seal plate supporting a brush seal mounted in the space between the compressor and turbine and bearing against the shaft of a microturbine engine form a barrier in this cavity and serves to control flow in this space. A plurality of circumferentially spa... | 03/08/2005 |
| 6863508 | Measuring gas pump with heated and insulated pump head A pump for gases to be measured having a pump housing in which a pump chamber is located. The pump chamber is sealed off by a working membrane that is connected to a crank drive by a connecting rod or similar lifting mechanism. A heating device is provided in an upp... | 03/08/2005 |
| 6827558 | Measuring gas pump A measuring gas pump (1) including a pump housing (2) with a pump chamber (3) inside which is sealed by a working membrane (5). The membrane (5) is connected: by a connecting rod (8) or a similar type of lifting device to a ... | 12/07/2004 |
| 6702000 | Heat sink apparatus, blower for use therein and electronic equipment using the same apparatus A blower is provided for effectively cooling heat generating parts in a casing of a personal computer and so on, with a heat sink apparatus using the blower and an electronic equipment using the heat sink apparatus. The blower comprises a fan and an outer... | 03/09/2004 |
| 6655932 | Pressure impacted cooling and lubrication unit A device for cooling and lubricating a subsea device (1) which includes an electric rotary machine (4) and a fluid-rotation machine (6-8) drive-connected (5) thereto, which electric rotary machine (4) has a lubrication/cooling circuit includes a cooler (1... | 12/02/2003 |
| 6655930 | Insulation means for a centrifugal pump A centrifugal pump for pumping low temperature fluid includes a motor portion driving an impeller of a pump portion. The motor portion and impeller are coaxial. A pot, sealed to the pump portion, receives the low temperature fluid. The low temperature flu... | 12/02/2003 |
| 6644942 | Monobloc housing for vacuum pump The invention concerns a pumping unit wherein the vacuum pump (100) is driven by a motor (3, 4) comprised in a common monobloc housing forming motor housing (5) and oil pan (18) containing a gear assembly (17) for coupling two parallel pump rotors (14). T... | 11/11/2003 |
| 6634854 | Machinery unit with integrated heat barrier A machinery unit with a heat barrier which separates a part that is hot during operation from a cool part of the machinery unit. The machinery unit includes a fastening mechanism for holding the two parts together and at least one or more force-transmitti... | 10/21/2003 |
| 6632075 | Sealing and cooling device The invention concerns a sealing- and cooling system for a submersible machine, such as a pump or a mixer. The device comprises an easily replaceable (4) containing mechanical face seals with an intermediate room for a barrier liquid where a circulation p... | 10/14/2003 |
| 6599097 | Dry vacuum pump with improved gas discharging speed and pump cooling The present invention relates to a dry vacuum pump which includes multiple-tier cylinders, a gas flow path formed in a cover, and a cooling water flow path for thereby concurrently a heat of cooling rotation friction elements and a high temperature gas. I... | 07/29/2003 |
| 6419461 | Turbo molecular pump A turbo molecular pump comprises an electric component section having a motor, a base section supporting the electric component section, a shaft rotationally driven by the motor, and an impeller connected to the shaft for rotation therewith. A casing hous... | 07/16/2002 |
| 6409480 | Drive unit for hydraulic consumers for individual structural component parts of a machine A drive unit for hydraulic consumers for individual structural component parts of a machine for producing shaped articles from molding materials, including a motor, a pump driven by the motor, and a carrying part configured to connect at least one of the ... | 06/25/2002 |
| 6328541 | Thermal barrier and reactor coolant pump incorporating the same A thermal barrier for a nuclear reactor coolant pump includes a stack of pancake cooling coils encircling the pump shaft where it enters the pump chamber. This stack of coiling coils has an irregular peripheral surface formed by axially extending, diametr... | 12/11/2001 |
| 6250896 | Pump for a cryogenic liquid and pump unit and distillation column which are equipped with such a pump A pump for a cryogenic liquid, in particular liquid oxygen, includes a hydraulic motor which is supplied with a motor liquid under pressure and drives a wheel for pumping the cryogenic liquid, and relative sealing device preventing contamination of the cr... | 06/26/2001 |
| 6126416 | Adjustable shroud for a submergible pumping system and pumping system incorporating same An adjustable shroud arrangement is disclosed for a submergible pumping system. The pumping system is of the type used to raise fluids from wells, such as petroleum production wells. The systems include a plurality of interconnected components, including ... | 10/03/2000 |
| 6068455 | Long life pump system A system for pressurizing and pumping a fluid that may undergo substantial variations in temperature utilizes a motor with an enclosed rotor disposed adjacent and in driving relation to a centrifugal pump, but thermally isolated even though the fluid bein... | 05/30/2000 |
| 5934883 | Paint spraying device A paint spraying device has a housing with two halves and a hydraulic device mounted in the housing. The hydraulic device includes a valve system and a pump for conveying a medium to be sprayed. The pump is loaded by a hydraulic medium. A vertical plate f... | 08/10/1999 |
| 5911565 | Pump for conveying hot media The invention concerns a pump for conveying hot media wherein the pump has a pump housing, a seal housing (13, 14) disposed at a distance from the pump housing and is connected thereto, a bearing housing (19) connected to the pump housing via a Chinese la... | 06/15/1999 |
| 5893706 | Cooling structure for compressor A compressor having a compression mechanism within a housing for compressing a refrigerant gas according to the rotation of a rotary shaft operatively connected to an external power source. A pulley is mounted on the rotary shaft and located on one side o... | 04/13/1999 |
| 5820358 | Clearance means to prevent fuel leakage in a radial piston pump A pump for low-viscosity fuel comprises a pump shaft 6 installed in a pump housing 2, 3, 4 and divided into a drive-side shaft 6A and a driven-side shaft 6B, a partition 12 provided between the drive-side shaft and the driven-side shaft of the pump shaft ... | 10/13/1998 |
| 5779453 | Vacuum pump motor arrangement having reduced heat generation A vacuum pump has a pump casing having a suction side where a suction port is located and a discharge side where a discharge port is located, a pump assembly housed in the pump casing and comprising a pair of pump rotors rotatable in synchronism with each... | 07/14/1998 |
| 5642987 | Pump motor assembly for a two-phase fluid A pump assembly for a liquefied gas system. The assembly has a housing which contains a seal that separates a motor chamber from a pump chamber. Located within the pump chamber is a pump device that pumps the liquid gas from an inlet port to an outlet por... | 07/01/1997 |
| 5626460 | Centrifugal pump system with integrated heat barrier A centrifugal pump system for moving hot media includes a pump section, a motor section and mounting elements holding the pump and motor sections together. A force is formed by the mounting elements that is transmitted between the pump section and the mot... | 05/06/1997 |
| 5624245 | Centrufugal pump with thermally isolated and dynamically air cooled shaft seal assembly A high temperature, centrifugal pump includes a thermally isolated and dynamically air cooled shaft seal. Carbon graphite insulators formed of plural elements juxtaposed together (46) insulate the seal assembly (34) from the pump housing (16). A hollow dr... | 04/29/1997 |
| 5542822 | Liquid ring pump and separator container assembly An upright L- or U-shaped separating container with a pump unit mounted on the horizontal part thereof. The separating container is provided with an inlet opening towards its bottom and an outlet opening towards its top. The pump unit is comprised of a co... | 08/06/1996 |
| 5269665 | Portable hand-held blower/vacuum unit with resilient engine mounting system A portable, hand-held blower/vacuum unit has a housing structure defined by an upper engine shroud removably connected to the top wall of a lower impeller housing. Disposed within the shroud is a small internal combustion engine having a vertical cranksha... | 12/14/1993 |
