Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7416381 | Impeller for fuel pumps A fuel pump for a vehicle comprises: a driving motor; an impeller having a substantially circular shape, the impeller being rotatable by operation of the driving motor; and a pump casing covered with a casing cover, the pump casing and casing cover together defining... | 08/26/2008 |
| 7335128 | Drive assembly for wind turbines A drive assembly for a wind turbine includes a rotor hub, a supporting structure, a planetary gear transmission unit having sun, planet and ring gears and a planet carrier. The ring gear is non-rotatably secured to the supporting structure. A main bearing rotatably ... | 02/26/2008 |
| 7314347 | Pressurized fluid bladeless turbine engine with opposing fluid intake assemblies A bladeless pressurized fluid turbine engine having a bladeless turbine, internal, concentric or circumferential shaft fluid ways which transmit pressurized gas to the turbine, and a pair of opposing pressurized fluid intake assemblies. Each intake assembly has a fi... | 01/01/2008 |
| 7261513 | Centrifugal compressor A centrifugal compressor has a housing assembly and an impeller rotatably connected to the housing assembly. Gas introduced into the housing assembly by rotation of the impeller is compressed at least by centrifugal force. One aspect of the present invention is that... | 08/28/2007 |
| 7179057 | Velocity profile impeller vane In accordance with the present invention, an impeller for use in a centrifugal pump has at least one vane the radially outer terminal end of which is configured to produce a flow velocity profile that controls and reduces the wear caused by slurry fluid being expell... | 02/20/2007 |
| 7094016 | Multi-phase flow pumping means and related methods A method of pumping and related arrangement for multi-phase fluid flow wherein a centrifugal pump is used for the suction and delivery of the multi-phase fluid which has a fluid communication providing portion to provide a communication of fluid bled from the outlet... | 08/22/2006 |
| 7092795 | Turbine apparatus and governor for turbine In a turbine apparatus comprising a runner rotatable to be rotationally driven by a water, a gain of a derivative calculation element generating a derivative component of a control signal for controlling a flow rate of the water which derivative component is to be a... | 08/15/2006 |
| 7072744 | Turbine apparatus and governor for turbine In a turbine apparatus comprising a runner rotatable to be rotationally driven by a water, a gain of a derivative calculation element generating a derivative component of a control signal for controlling a flow rate of the water which derivative component is to be a... | 07/04/2006 |
| 6287093 | Side canal pump with a side canal located in the suction cover in order to avoid imperfect vortex structures The invention relates to a side-channel pump having an intake cover (10), which is used in pumping fuel in a motor vehicle. The intake cover (10) has a side channel (11), extending radially about a pivot point (14) in the intake cover (10), a first openin... | 09/11/2001 |
| 6041853 | Ceiling built-in type air conditioner The present invention aims at obtaining a ceiling built-in type air conditioner in which noise attributable to the breakaway flow of air at the front ends of the fins is decreased. For this purpose, the ceiling built-in type air conditioner has a heat exc... | 03/28/2000 |
| 5516262 | Automatic pump An improved automatic pump capable of advantageously reducing manufacturing processes thereof as well as significantly preventing pressure decrease in a pump assembly by providing a pressure control tube and removing a sealing process thereof, which inclu... | 05/14/1996 |
| 5415226 | Device for preventing noise in air conditioner A device for preventing noise in an air conditioner including a stabilizer with different inclination angles correspondingly with the different segments of the lateral blowing fan, so that the blades of the segments of the lateral blowing fan pass the sta... | 05/16/1995 |
| 5265996 | Regenerative pump with improved suction Poor inlet suction characteristics in regenerative pumps may be avoided in a construction including a housing (10) having an impeller receiving cavity (20) with a circular impeller (22) therein. Channel-like annular grooves (32, 34) are disposed in the ho... | 11/30/1993 |
| 5158426 | Stator assembly for a turbomolecular pump In a stator assembly for a turbomolecular pump, each stator is assembled from two semicircular portions mutually aligned and secured in place by tongue and grooves means, each such stator including a plurality of radially directed blades connecting an inn... | 10/27/1992 |
| 5141390 | Vertical axis centilevered pump provided with a stabilizing by-pass flow A vertical-axis cantilevered-shaft centrifugal pump having an impeller within a pump casing, an intake end in fluid communication with a fluid supply, and a dischage end, in which is provided an integral by-pass. The pump is operated at a speed representi... | 08/25/1992 |
| 5024578 | Regenerative pump with two-stage stripper A regenerative rotary pump in an automotive fuel pump assembly. The rotary pump has a disc-shaped impeller in a circular cavity of a housing, vanes around the circumference of the impeller separated by pockets, a donut-shaped pumping chamber in the housin... | 06/18/1991 |
| 4992021 | Side channel blower A side channel blower, preferably for burners for cleaning soot particle filters mounted in exhaust gas lines of vehicles by burning off, is shown, in which a chamber housing (6) with a chamber (5) is arranged on the air discharge side, wherein air flows ... | 02/12/1991 |
| 4964783 | Device for emptying a liquid-collection tank in a water-conducting household appliance An arrangement for emptying a liquid collection tank in household appliances that use water such as washing machines or dish washers. A centrifugal pump is provided with a housing and a floating impeller. An axial suction connection with a tubular connect... | 10/23/1990 |
| 4921079 | Hydrodynamic retarder A hydrodynamic retarder with a stator blade wheel and a rotor blade wheel whose blades together fill the work chamber for working liquid. Slot shaped inlet openings permit entrance of working liquid to the working chamber. The inlet openings are located a... | 05/01/1990 |
| 4747267 | Hydrodynamic coupling A hydrodynamic coupling, whose degree of filling is determined by a scoop tube, has a plurality of radially arranged elongated depressions on the inner surface of the coupling casing (simultaneously forming a scoop chamber) driven on the primary side. The... | 05/31/1988 |
| 4627790 | Portable pump with air seal An axial flow liquid pump comprises an outer tube, a smaller diameter inner tube, and a driven shaft journaled near the top of the inner tube. An upwardly opening cup-shaped rotor is secured in the lower end of the shaft such that a cylindrical sidewall i... | 12/09/1986 |
| 4563123 | Direct coupling of a vortex injector to a centrifugal pump A method for reducing the wear on the impeller and increasing the efficiency of a centrifugal pump when used to pump a slurry stream containing from large dimensioned to fine dimensioned material in a fluid by forming a vortex by injecting fluid tangentia... | 01/07/1986 |
| 4533293 | Method of improving the part-load behavior of a turbo machine, and a compressor or pump adapted for use of such method The invention relates to a method of improving the part-load behavior of a turbo machine operating with a rotor 13 having fixed vanes 14. Such method uses the feature of applying auxiliary fluid injection nozzles 18 near the inlet 11 of the rotor for addi... | 08/06/1985 |
| 4465428 | Pipe fitting and method for draining a hydrotherapy pump A pipe fitting for attachment to a hydrotherapy pump has an inlet and outlet having parallel offset axes, with a separate small hollow nipple extending from and communicating with the inlet. The nipple attaches to the pump at a location normally occupied ... | 08/14/1984 |
| 4332519 | Oil collecting apparatus An apparatus for collecting pollution, especially oil, from a surface contaminated liquid. The apparatus is adapted to float on the surface of the liquid. A surface layer of liquid with pollutant is drawn into a rotating hollow rotor by virtue of a liquid... | 06/01/1982 |
| 4305214 | In-line centrifugal pump A ladder pump for use with a hydraulic dredge to increase the main pump efficiency comprises a casing and a vaned impeller located in the casing and mounted for rotation about a normally horizontal axis transverse to the ladder. The casing has an inlet an... | 12/15/1981 |
| 4255080 | Fans or the like In a centrifugal fan or the like including an impeller housed in a casing, recirculation means are provided to recycle a portion of the gas discharge back to the blades of the impeller. Specifically these means comprise a radial passage between an impelle... | 03/10/1981 |
| 4252499 | Centrifugal pump A centrifugal pump of the pitot pump type is provided a stationary vane structure containing a pitot tube mounted inside a rotating casing. Fluid is delivered to a pumping chamber within the casing through a plurality of radially extending ducts of at lea... | 02/24/1981 |
| 4093397 | High vacuum pump A high vacuum pump having a centrifugally filtered intake with a particular utility as an aspirator in a dentist's office, for example, having a coaxial intake/output at the pump's rotor hub with a radial outlet therefrom, a liquid pressure seal on the to... | 06/06/1978 |
| 4080787 | High velocity spiral air motor A pair of sealed, concentric metal tanks define a high pressure air storage chamber between the tanks, while the inner of the two tanks forms an air expansion chamber and carries a plurality of axially spaced impellers fixed to a shaft mounted for rotatio... | 03/28/1978 |
| 4029430 | Short subsonic diffuser for large pressure ratios A short, wide angle diffuser having means for preventing boundary layer separation is disclosed. The means includes means for injecting a fluid stream into the diffuser at preselected locations for mixing with the boundary layer fluid. The injected fluid ... | 06/14/1977 |
| 4012164 | Rotor with recirculation A method and apparatus for generating power and for pumping fluids, wherein a free vortex cavity, within a rotating rotor, is used to pressurize a fluid after which the fluid may be used as a pressurized fluid or be used to generate power. The working flu... | 03/15/1977 |
| 3930744 | Pressure gas engine A pressure gas engine having an inner first member of circular cross section with a periphery containing first energy conversion means for converting gas pressure to power and an outer second member extending around the first member and with a generally c... | 01/06/1976 |
