Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7942653 | Electric shower-waste pump and control unit An electric shower-waste pump and control unit for pumping run-off shower water from a waste outlet to a drain, the unit comprising a housing having a first chamber and a separate second chamber which is water-tightly sealable, a removable housing cover for closing ... | 05/17/2011 |
| 7854599 | Circulating pump and method for the fluid lubrication of a spherical bearing in an electric motor A circulating pump with an electric motor, which comprises a rotor and a stator, is proposed, the rotor being mounted on a spherical bearing which comprises a sliding body with a convex spherical surface and a bearing bushing with a concave spherical surface and whi... | 12/21/2010 |
| 7824161 | Pump secondary seal A centrifugal pumps secondary seal is disposed between the pump housing cover (130) in the seal chamber and includes a rotatable annular slinger (440) axially disposed on the pump motor shaft for slinging water away from the motor shaft and a flange pr... | 11/02/2010 |
| 7665975 | Seal section oil seal for submersible pump assembly A seal section for location between a submersible rotary pump and motor has a primary mechanical seal and a secondary oil seal at the pump end of the seal section. The mechanical seal has rigid seal faces that slide in engagement with each other. The secondary seal ... | 02/23/2010 |
| 7537439 | Transfer pump A portable self-priming transfer pump comprising a one piece unitary housing, comprised of a first portion that houses a motor, a second casing portion within which is formed a pump cavity, and a handle; and a one piece cover fitted to the outboard end of the second... | 05/26/2009 |
| 7520735 | Nested bellows expansion member for a submersible pump A multi-diameter bellows for use in a seal section of a submersible pump. The bellows is adapted to surround a shaft that communicates the motor with the pump. The bellows is made of a first collapsible section and a second collapsible section. The volume of the bel... | 04/21/2009 |
| 7288870 | Stator core A stator core 2 comprises laminations (9) of low loss stator iron forming a body of magnetic nature and lamination components (11) of high thermal conductivity material regularly arranged within that body. The high thermal conductivity component... | 10/30/2007 |
| 7262532 | Arrangement with an electronically commutated external rotor motor A motor structure resistant to liquid intrusion features two modules, the first having an electronically commutated external-rotor motor (20), which motor comprises an internal stator (22) that is arranged on a bearing tube (30) and is separated... | 08/28/2007 |
| 7217107 | Protector for electrical submersible pumps A system and method for protecting a motor for a submersible pumping system. A variety of motor protectors are provided for application in variable temperature environments and multiple wellbore orientations. The motor protectors may include one or more of a positiv... | 05/15/2007 |
| 7217469 | Fluid handling device for hydrogen-containing process fluids The present invention relates to a process fluid handling device in an electrochemical cell system having a fluid barrier between a process fluid compartment and a drive compartment of the fluid handling device. The fluid barrier comprises an interconnection compart... | 05/15/2007 |
| 7182346 | Multistage oil seal against different cutting fluids for a machine tool motor A multistage oil seal (4) includes a plurality of lips (7a, 7b, 7c) in a plurality of stages disposed around a motor shaft (1) of a machine tool along the axis of the motor shaft to protect internal members of ... | 02/27/2007 |
| 7182584 | Motor protector A system and method is provided for reducing the wear on a motor protector, particularly when used in an abrasive environment. The motor protector comprises an outer housing having an internal shaft. The motor protector further comprises a head section having an abr... | 02/27/2007 |
| 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 |
| 7102261 | Coupling device between a rotor of permanent-magnet synchronous motor and a working part A coupling device (11) between a rotor of a synchronous permanent-magnet motor and a working part (17), being advantageously able to ensure an unusual silentness, comprises a driving member (22), being eccentric with respect to the rotor rotatio... | 09/05/2006 |
| 7097433 | Fuel transfer pump The fuel transfer pump is a combination suction and pressure pump in a manifold above the fuel storage tank. The fuel transfer pump is contained within a manifold. The pump is liquid cooled (more specifically, fuel cooled) and is located in a manifold above the fuel... | 08/29/2006 |
| 7083385 | Axial flow fan motor An axial flow fan motor having an impeller molded integrally with a shaft from a synthetic resin. The shaft is easily assembled with a bearing arrangement by being brought into tight contact with the inner ring of the bearing arrangement and is reliably fixed theret... | 08/01/2006 |
| 7029393 | Split inlet seal for grain separators and method A grain separator having an easily replaceable seal. The separator comprises a housing and a rotatable grain separation drum carried by the housing, the drum having an end face with an external annular bearing surface. A drive shaft extends axially into the drum thr... | 04/18/2006 |
| 7021907 | Ventilation and purge of a hydrogen blower A hydrogen blower is provided and includes a housing having a drive unit and a compressor unit disposed therein. The drive unit is separated from the compressor unit by a neutral chamber, whereby the neutral chamber effectively seals the drive unit from the compress... | 04/04/2006 |
| 7008177 | Centrifugal pump with self cooling and flushing features A fluid pump including provisions for cooling and/or flushing in the vicinity of a static seal. In one embodiment, the invention includes an open channel fluid passageway defined on a generally flat surface of a pump housing. A centrifugal rotor with a generally fla... | 03/07/2006 |
| 7001159 | Motor-driven pump for pool or spa An improved motor-driven pump is provided for delivering a flow of water in a swimming pool or spa environment or the like. The improved pump includes a motor mounted within a motor housing having a seal plate mounted at one end thereof. The seal plate carries a sha... | 02/21/2006 |
| 6997688 | Secondary containment for a magnetic-drive centrifugal pump A centrifugal pump includes a housing having a housing cavity, an inlet, and an outlet. A pump shaft is located within the housing cavity. A radial bearing coaxially surrounds the pump shaft. The shaft and the radial bearing are rotatable with respect to one another... | 02/14/2006 |
| 6979174 | Stage pump having composite components A system and method is provided for pumping fluid. A pump incorporates composite components that provide a high degree of formability while maintaining wear resistance for use in potentially abrasive environments. The composite components may comprise one or more im... | 12/27/2005 |
| 6971848 | Multistage pump and method of making same A system and method is provided for constructing an elongated pump. The pump has multiple stages within an outer housing. Each stage comprises an impeller and a diffuser. The diffusers are divided into separate groups that are compressed during construction of the p... | 12/06/2005 |
| 6969229 | Sealing system for centrifugal compressors which process lethal gases A sealing system (10) which ensures the safe operation of very high pressure centrifugal compressors which process lethal gases. The system comprises sealing means (18, 19) separated by an annular chamber (12), and a discharge line (32) f... | 11/29/2005 |
| 6926502 | Combination shield and conduit box cover An apparatus comprising a driven element, a driving element operably coupled to the driven element, and a shield coupled to the driving element such that the shield at least partially covers at least one of the driven element and the driving element. The driven elem... | 08/09/2005 |
| 6887048 | Liquid pump and sealing mechanism A liquid pump has a sealing mechanism utilizing magnets. The sealing mechanism includes an annular rotating seal attached to the lower surface of a rotary base member fixed to the motor rotating shaft. Additionally, a flexible stationary seal is joined and separated... | 05/03/2005 |
| 6854957 | Seal of a vertical pump A seal of a vertical pump with a front casing disposed on a main casing which has a motor disposed therein. A volute chamber is disposed inside the front casing to receive a centrifugal impeller. A suction inlet is disposed axially on the front casing opposite the m... | 02/15/2005 |
| 6851935 | Above the motor bellows expansion member for a submersible pump A multi-diameter bellows is provided in a seal section of a submersible pump to assist in allowing expansion of dielectric oil within the submersible pump, to equalize the casing annulus pressure with the internal dielectric motor fluid and to isolate the well fluid... | 02/08/2005 |
| 6729847 | Bilge pump seal and float actuator A bilge pump includes an outer housing having an interior wall separating a first cavity and a second cavity, an on/off electrical switch located within the first cavity, and a single-piece float located within the second cavity and having a float body and an actuat... | 05/04/2004 |
| 6719791 | Device for the axial transport of fluid media The invention provides a device for the axial delivery of fluidal mediums, which outer diameter is not or only insignificantly larger than the diameter of the fluid carrying pipe, which reduces to a large extent a shearing and vortexing of the fluid. A device for th... | 04/13/2004 |
| 6705844 | Dynamic seal A seal is disposed between a rotating part and a stationary part. At least one of the parts is provided with projections which protrude into the seal gap. The seal gap (5) extends approximately radially so that both parts are provided with projections which e... | 03/16/2004 |
| 6695576 | Pump for liquids, in particular, a centrifugal pump for electric household appliances A pump is disclosed that comprises: (1) a support structure including a body having an annular end in which an opening is defined, and a volute connected to the said end of the body so as to define a pumping chamber therewith; (2) a bladed rotor disposed ... | 02/24/2004 |
| 6688860 | Protector for electrical submersible pumps A system and method for protecting a motor for a submersible pumping system. A variety of motor protectors are provided for application in variable temperature environments and multiple wellbore orientations. The motor protectors may include one or more o... | 02/10/2004 |
| 6685445 | Structure of a vertical-type, acid and base resistance pump An improved structure of a vertical-type, acid and base resistance pump is disclosed. The present pump structure comprises a motor, a seal cap, a ceramic ring, two seals, a shaft cap, a propeller wheel and a pump body, the front of the motor provided with... | 02/03/2004 |
| 6666664 | Technique for protecting a submersible motor A motor protection system that utilizes a motor protector in combination with a submersible motor. The motor protector allows for the free flow of an internal lubricating liquid therethrough to the connected submersible motor. The internal liquid prevents... | 12/23/2003 |
| 6655914 | Casing cover and pump device A casing cover is used in separating a motor assembly and a pump assembly from each other in a pump device. The casing cover has a cylindrical wall portion having a motor-side positioning portion disposed on one of an inner and outer circumferential surfa... | 12/02/2003 |
| 6638015 | Water pump apparatus A water pump apparatus includes a body adapted to a fixed mounting surface of an engine and having a bore, a rotational shaft rotatably supported on the body via a bearing, an impeller fixed to the shaft and located in a pump chamber for supplying forcibl... | 10/28/2003 |
| 6637216 | Compressor with internal accumulator for use in split compressor A rotary compressor having a housing with a motor and an internal accumulator located on the low pressure side and an oil sump located on the high pressure side. A sealing means positioned within the housing defines a first chamber and a second chamber. T... | 10/28/2003 |
| 6619935 | Mixing valve with axially segmented stator windings for axially positioning a control element for controlling the fluid connection between inlets and outlets The invention relates to a mixing valve with at least two inlets and at least one outlet. A control element is configured as a pump wheel controls the fluid connection between the inlets and the outlets. The pump wheel is connected to a hollow shaft which... | 09/16/2003 |
| 6602059 | Electric submersible pump assembly with tube seal section The present invention provides an electrical submersible pump assembly having a submersible pump, a submersible electrical motor drivingly connected to the pump, and a seal assembly disposed between the submersible pump and the motor. The seal assembly is... | 08/05/2003 |
