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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 8172523 | Multistage pump assembly having removable cartridge A multistage pump assembly includes a manifold having an inlet port configured to be coupled to a supply pipe and an outlet port configured to be coupled to a discharge pipe. The inlet and outlet ports define an end suction, radial outlet port configuration. The pum... | 05/08/2012 |
| 7946810 | Multistage pump assembly A modular multistage pump assembly includes a volute having a suction side and a pressure side, a pump stack having at least one stage, and a modular flange coupled to each of the volute and the pump stack. ... | 05/24/2011 |
| 7896612 | Blower unit and portable blower A blower unit for a portable blower, having a drive shaft that is rotatably driven by a drive motor. Disposed in the blower unit is an axial fan that is provided with at least one fan wheel driven by the drive shaft and at least guide wheel fixedly disposed in the h... | 03/01/2011 |
| 7874796 | Heat dissipation module A heat dissipation module includes a housing, and a fan including an outer frame, a first rotor, a base, a second rotor and a driving device. The first rotor includes a shaft, a first hub and a plurality of first rotor blades disposed around the first hub. The base ... | 01/25/2011 |
| 7470107 | Turbo blower structure A turbo blower, include an air hood provided with an air inlet and a turbine disposed within the air hood driven and rotated by a motor. The turbine consists of a plurality of guide vanes fitted between a circular base plate and a top plate. The turbo blower is char... | 12/30/2008 |
| 7419354 | Centrifugal pump with screw pump accelerator Method and apparatus for pumping drilling fluid (mud) containing drill cuttings, comprising a centrifugal pump with screw pump accelerator. The screw pump creating positive pressure for centrifugal pump inlet to increase performance. The screw pump mud level fluctua... | 09/02/2008 |
| 7357617 | Fan including a plurality of spaced fan bodies A fan including a plurality of spaced fan bodies that rotate in a substantially cylindrical cavity having inlet and outlet openings for tangential intake and discharge of the fluid, the fan bodies comprising substantially disc-shaped bodies that extend in a substant... | 04/15/2008 |
| 7252265 | Microaircraft and cellular phone equipped with microaircraft An aircraft which is attachable to, for example, a cellular phone. The aircraft is provided with at least four rotors actuated with compressed fluid or by ring-shaped electric motors. ... | 08/07/2007 |
| 7207779 | Impeller for radial-flow heat dissipating fan An impeller for a radial-flow heat dissipating fan includes a hub and a plurality of blades surrounding the hub. The blades are connected to a circumference of the hub to allow joint rotation of the hub and the blades. The impeller includes an air inlet side and a b... | 04/24/2007 |
| 7198457 | Single-shaft multistage pump A single-shaft multistage pump is provided to make small-sized and space-saved possible. The single-shaft multistage pump includes a rotary shaft on which impellers are disposed at multiple stages, bearings and for supporting the rotary shaft, and a balance device a... | 04/03/2007 |
| 7189062 | Centrifugal impeller A centrifugal impeller particularly for a turbo-charger includes a circular disc member, a boss portion formed at a central portion of the disc member and having a central through hole into which a rotational shaft is inserted, an impeller blade integrally formed on... | 03/13/2007 |
| 7153097 | Centrifugal impeller and pump apparatus The centrifugal impeller includes a plurality of blades (3), a plurality of fluid paths (P) for delivering a fluid from an impeller inlet (1) to an impeller outlet (2), and a shroud (4) and a hub (5) for forming the fluid paths (P)... | 12/26/2006 |
| 7122761 | Friction processing weld preparation A weld preparation process that translates a consumable or nonconsumable tool over an area that is subsequently to be welded to impart friction heating to the surface. Rotary or linearly oscillated motion between the tool and the workpiece is used to generate heat a... | 10/17/2006 |
| 7109622 | Flywheel system with synchronous reluctance and permanent magnet generators The present invention provides a flywheel system with a variable speed synchronous reluctance motor-generator and a variable speed permanent magnet generator for providing backup power. The flywheel system incorporates rotating elements supported by electromagnetic ... | 09/19/2006 |
| 7059830 | Axial-flow serial fan This specification discloses a serial fan comprising a plurality of rotor vanes, one or more supports and a frame. Each of the rotor vanes comprises an inlet, an outlet, and one or more blades. Each support supports at least one of the rotor vanes so that the corres... | 06/13/2006 |
| 7052605 | Device for purifying liquids A device for cleaning liquids, in particular edible oils, by means of a filter in a filter housing, the filter being connected downstream of a pump, and a motor for driving the pump, which has a rotor having a rotor disc with vanes in an immersion housing being prov... | 05/30/2006 |
| 6951445 | Apparatus for use in slurry pumps Apparatus for use with a slurry pump, including a stationary part which includes a processing chamber having an inner side wall and a central axis, an inlet and an outlet to and from the processing chamber and a rotatable part at least partially disposed within the ... | 10/04/2005 |
| 6904960 | Heat dissipation apparatus A heat dissipation apparatus has an enclosure, in which a lateral fan seat is integrally formed with the enclosure. The lateral fan seat divides the interior space of the enclosure into an upper chamber and a lower chamber. An axis is installed across the upper and ... | 06/14/2005 |
| 6893218 | Centrifugal blower unit In a centrifugal blower unit for an inside and outside air double-layer flow type vehicular air conditioner, a centrifugal fan includes a first fan and a second fan. The first fan and the second fan have plural first blades and second blades arranged about a rotatio... | 05/17/2005 |
| 6866478 | Miniature gas turbine engine with unitary rotor shaft for power generation The present invention provides a miniature gas turbine engine for power generation. The engine has a highly integrated unitary rotor shaft where turbine, compressor and shaft are made in one piece in one fabrication process. The turbine and compressor are positioned... | 03/15/2005 |
| 6685424 | Method and apparatus for increasing performance of a pump A method and apparatus for improving the performance of a pump uses a pump performance disk kit comprising an impeller disk having a plurality of impeller disk blades extending at angles from a planar surface of the impeller disk such that when the impell... | 02/03/2004 |
| 6652230 | Serial fan with a plurality of rotor vanes An axial flow serial fan includes a single frame, a first rotor vane having at least one first blades; and a second rotor vane having at least one second blades, wherein the first rotor vane and the second rotor vane are provided in series in the single f... | 11/25/2003 |
| 6516789 | Centrifugal supercharger having lubricating slinger A centrifugal supercharger includes a case presenting a compressor chamber and a transmission chamber. An impeller in the compressor chamber is mounted to a shaft that extends into the transmission chamber. The impeller shaft is drivingly connected to a p... | 02/11/2003 |
| 6508618 | Pump having dynamic shaft seal A pump has a housing defining a pump chamber and having a shaft opening. An impeller shaft extends through the shaft opening and is sized to define a gap between the impeller shaft and the shaft opening. An impeller is attached to the shaft inside the pum... | 01/21/2003 |
| 6490865 | Centrifuge compression combustion turbine A centrifuge compression combustion turbine employing curved radial downward sloping impeller blade compressor fan units, which densify in two stages the air entering the turbine before entering the combustor section, or alternatively when placed within t... | 12/10/2002 |
| 6488469 | Mixed flow and centrifugal compressor for gas turbine engine A two stage compressor for a gas turbine engine with a mixed flow first stage, a centrifugal second stage, and an intermediate duct. The mixed flow stage has a mixed rotor rotatable about the central compressor axis with a circumferential array of mixed f... | 12/03/2002 |
| 6454531 | Fabricating turbine rotors composed of separate components A steam turbine rotor is constructed from a first forging of a first alloy, and a second forging of a second alloy different than the first alloy. For example, one of the alloys is suitable for use in a high temperature environment and the other in a low ... | 09/24/2002 |
| 6378287 | Multi-stage turbomachine and design method A gas turbo-machine and method of designing and constructing such machine includes preselecting specific operating conditions for the gas turbo-machine, and constructing a master stage as a model to have a given design and geometric shape which results in... | 04/30/2002 |
| 6318964 | Complex cooling fan with increased cooling capacity A complex cooling fan includes an upper fan including an upper fan and a lower fan, the upper fan including a first cylindrical body, a plurality of first blades extending outwardly from the cylindrical shell body, and a cylindrical collar extending downw... | 11/20/2001 |
| 6261059 | Compressed gas actuated turbine-type vibrator A compressed gas or pneumatically actuated turbine-type vibrator having an outer housing 12, a rotor assembly 14 that is freely rotatable within a cylindrical chamber 16 formed in the outer housing 12. The rotor assembly 14 includes a plurality of V-shape... | 07/17/2001 |
| 6254335 | Device for admixing a first fluid into a second fluid A device for admixing a first fluid into a second fluid. The device has a housing with a rotationally symmetrical rotation chamber defined therein that is arranged with an inlet for the second fluid and an outlet for the mixed fluids. A distance from a ce... | 07/03/2001 |
| 6227795 | Contoured propulsion blade and a device incorporating same A blade and a series of blades are provided for implementation into a device, such as, for example, a turbine, a fan, a pump or the like. The blades are substantially flat and include at least one rib or irregularity peripherally formed in the blade equid... | 05/08/2001 |
| 6106224 | Downthrust pads for submersible centrifugal pumps A submersible centrifugal pump is claimed which includes an inner downthrust washer for receiving the downthrust load from the upward movement of the produced fluid, and an outer sealing washer, which is a non-load bearing washer, for allowing the reposit... | 08/22/2000 |
| 6074166 | Pump The pump is formed by pump housing defining a pump housing cavity and a column housing defining an elongated cavity. The front of the column housing is coupled to the rear of the pump housing cavity. A shaft axially from the rear of the column housing cav... | 06/13/2000 |
| 5921750 | Compact interbowl assembly coupler for vertical turbine pumps An interbowl coupler provides for field coupling an upper pump bowl assembly to a lower pump bowl assembly, each bowl assembly having impellers, a rotatable shaft, and a case, to provide a multistage vertical turbine pump for deep well applications. The c... | 07/13/1999 |
| 5816775 | Drainage pump with interposed disk A pump body 10 of a drainage pump 1A comprises a pump chamber 12, inlet 15, and outlet 17. A rotary vane 300 mounted in the pump body 10 is coupled to a motor mounted above the pump body 10, and comprises a shaft 310 and four large-radial blades 320. Form... | 10/06/1998 |
| 5791873 | Multi-stage blade system A multi-stage blade system of an axial flow turbo machine includes a wall (10, 11), which is on either the rotor side, the stator side, or both, which bounds the flow through the channel through which flow passes. The wall is provided, immediately at the ... | 08/11/1998 |
| 5628618 | Drainage pump with interposed disk A pump body 10 of a drainage pump 1A comprises a pump chamber 12, inlet 15, and outlet 17. A rotary vane 300 mounted in the pump body 10 is coupled to a motor mounted above the pump body 10, and comprises a shaft 310 and four large-radial blades 320. Form... | 05/13/1997 |
| 5599164 | Centrifugal process pump with booster impeller A centrifugal pump assembly and method of using same including a vertical or horizontal overhung housing assembly having a primary inlet, a primary discharge, a secondary inlet and a secondary discharge. A shaft is in spaced relationship within the overhu... | 02/04/1997 |
| 5582008 | Two stage turbine with piston/cylinder assembly positioned therebetween A turbine comprising first and second stages, the first stage being a power stage and the second stage being an exhaust stage, a piston-cylinder assembly is connected between the stages, a shaft extending between the stages has at least one throw thereon ... | 12/10/1996 |
