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| Number | Title | Issue Date |
| 7426936 | Fully independent, redundant fluid energized sealing solution with secondary containment A redundant sealing system with secondary containment for preventing leakage of fluid along a valve shaft is provided. The system comprises a first set of dynamic seals, a second set of dynamic seals, an auxiliary barrier fluid chamber, and a barrier fluid indicator... | 09/23/2008 |
| 7338091 | Swivel joint system A swivel joint system for a cryogenic liquid transfer line, such as a liquefied natural gas line, and for return of cold gas associated with the cryogenic liquid transfer. The system includes a swivel joint for the passage of the cryogenic liquid and a swivel joint ... | 03/04/2008 |
| 7325781 | Automatic bathroom flushers with modular design A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 02/05/2008 |
| 7316154 | Seals with integrated leak progression detection capability A multifunctional seal that in one embodiment includes on each contact surface multiple redundant seals, sensors and sensor circuitry between each seal, and a power source and embedded electronic components and circuitry within the central core region. The seal is c... | 01/08/2008 |
| 7264426 | Apparatus and methods for servo-controlled manufacturing operations Apparatus and methods for servo-controlled manufacturing operations are disclosed. In one embodiment, an apparatus includes a base member, a drive platform spaced apart from the base member by a separation distance, and a plurality of guide members extending between... | 09/04/2007 |
| 7237507 | Selective bird feeder A selective bird feeder is provided. The selective bird feeder includes a selective housing having a side wall and a base. A cover supported by the side wall of the selected housing and a seed holder is contained within the selective housing. The selective housing r... | 07/03/2007 |
| 7201379 | Seal assembly, cartridge, and method A seal assembly and cartridge for sealing a space between a rotating member and a stationary member in which a sleeve extends around the rotating member and with the inner surface of the sleeve being spaced from the outer surface of the rotating member to form a gap... | 04/10/2007 |
| 7188822 | Enclosures for automatic bathroom flushers A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 03/13/2007 |
| 7156363 | Bathroom flushers with novel sensors and controllers A bathroom flusher (10) includes a body having an inlet (12) in communication with a supply line and an outlet (16) in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outl... | 01/02/2007 |
| 7143636 | Field device for determining and/or monitoring a process variable The invention relates to a field device (1) for determining and/or monitoring a physical and/or chemical process variable of a medium (5) in a container (6), including a first sealing stage (10) facing the process, at least one housing ( | 12/05/2006 |
| 7134669 | Sealing ring A sealing ring has an annular disk with at least one fastening part secured on a first machine part and at least one sealing part that, when the sealing ring is mounted, sealingly rests against a second machine part. The annular disk is fastened without intermediate... | 11/14/2006 |
| 7134668 | Differential pumping seal apparatus A differential pumping seal apparatus includes a differential pumping seal for sealing a first space and a second space from each other in a non-contact manner, and a back up seal mechanism for sealing the first space and the second space from each other in a contac... | 11/14/2006 |
| 7118114 | Dynamic sealing arrangement for movable shaft A dynamic sealing arrangement for preventing leakage of a fluid along a shaft includes multiple seals and pressurized barrier sealant. According to one aspect, at least three seals are arranged along the shaft with pressurized barrier sealant between the first and s... | 10/10/2006 |
| 7114726 | Pressurized chamber seal cartridge A seal cartridge for a centrifugal pump includes a housing that fits within a conventional stuffing box of the pump and has a cylindrical internal surface receiving the shaft. A pair of annular grooves are provided internally of the housing adjacent respectively opp... | 10/03/2006 |
| 7086275 | Means for detecting a leak A sealing system for sealing a machine element, preferably a shaft, with at least one sealing ring and a depot for absorbing a leak. The system is monitored with a measuring device that includes a condenser, and the depot serves as a dielectric. ... | 08/08/2006 |
| 7073794 | Leak detection means A sealing arrangement for sealing a machine element, preferably a shaft, with a sealing ring and leak-detection means that comprises a sensor for detecting the leak, and a depot for picking up the leak. The depot is monitored by the sensor and the depot consists of ... | 07/11/2006 |
| 7069941 | Electronic faucets for long-term operation An electronic faucet (10) mounted on a countertop (12) includes a housing, at least one fluid inlet line (24a, 24b) extending into the housing, a fluid outlet (46) from the housing, a solenoid (142, 143) for op... | 07/04/2006 |
| 7059418 | Pressurized seal arrangement A pressurized sealing arrangement suited for providing a seal between a valve stem and a valve body is provided. The sealing arrangement includes a piston that is restrained in and statically sealed to the valve body and which surrounds the valve stem. Contained wit... | 06/13/2006 |
| 7004471 | Radial lip seal A radial lip seal including an annular support with a radially extending portion having an inner periphery. An annular seal lip formed of elastomeric material such as polytetrafluoroethylene is connected to the inner periphery. The lip has an inner side adapted to s... | 02/28/2006 |
| 7004470 | Device for a pipe flange seal An arrangement for access to the external cylindrical/barrel shaped surface (16b) of a gasket (16) in flange connections in a piping installation in which the piping installation comprises flange halves (1, 1′) of the type in which a ga... | 02/28/2006 |
| 6979002 | Sealing apparatus having sequentially engageable seals Advantageous seal systems (1500) are provided that include a barrier member movable relative (1504) to a shaft (1550) to allow sequential engagement of resilient seal members (1506), e.g., lip seals, with the shaft. Movement of the barrie... | 12/27/2005 |
| 6953084 | Actuator for well-head valve or other similar applications and system incorporating same An electrical actuator is particularly suited for driving a wellhead valve for regulating the flow of natural gas from a production well. The electrical actuator can be driven using the existing local power supply in wellhead valve systems, typically a solar panel a... | 10/11/2005 |
| 6942733 | Fluid sealing system for a crystal puller A fluid sealing system is provided for use in a crystal puller for growing a monocrystalline ingot. The crystal puller has a housing, a fluid flow path contained in the housing, and a fluid passage through a wall of the housing for passage of fluid. The fluid sealin... | 09/13/2005 |
| 6817228 | Method and apparatus for detecting seal failure Pumps and valves with movable parts, such as a plunger, typically have seals around the part. The seals may isolate one chamber from another to prevent leakage across the seals. The pressure in one chamber may be different from the pressure in another adjacent chamb... | 11/16/2004 |
| 6802203 | Rotary seal testing machine A rotary seal machine is provided and includes a motor drive shaft which extends into and through a canister. A test seal specimen surrounds the shaft in the outer wall, and contaminant circulates through the canister for inducing leakage of the contaminant through ... | 10/12/2004 |
| 6796324 | Fugitive emission collection device A fugitive emission collection device for acquiring an atmosphere sample around a seal is provided. The emission collection device has a rigid member that forms a low impedance cavity shaped to overlay a seal. The emission collection device has a conduit with an inl... | 09/28/2004 |
| 6779798 | Sealing arrangement A sealing arrangement includes a sealing ring (1) having a sealing lip (3) which is curved forward in the direction of the area to be sealed off (2). The sealing lip (3) is pre-tensioned so as to surround and form a seal around the circum... | 08/24/2004 |
| 6658901 | Indication device for a laundry washing machine An indication device for a laundry washing machine, which has a treatment chamber (12) for laundry that can be pressurized in order to treat the laundry with a cleaning agent. The treatment chamber is provided with an opening (13), which in the treatment ... | 12/09/2003 |
| 6592126 | Mechanical seal leak detector A mechanical seal assembly includes a leak detector mounted thereon for detecting low rates of liquid leakage across the seal rings of the mechanical seal. The leakage detector collects the liquid leakage and includes a fiber optic sensor for detecting th... | 07/15/2003 |
| 6554024 | Stem seal pressure telltale A visual signal of pressure between valve stem seals is given by a rising ring, which moves upwardly with the upper stem seal when there is pressure between the stem seals. The rising ring is held to the stem or valve body around the stem by a retaining r... | 04/29/2003 |
| 6368077 | Turbocharger shaft dual phase seal A seal system for a four cycle engine turbocharger includes dual phase seals for limiting leakage from lubricated rotor support bearings to a turbine and/or compressor wheel of a rotor operational over an extended speed range. The dual phase seal combines... | 04/09/2002 |
| 6345954 | Dry gas seal contamination prevention system A seal gas pressure booster system for use with a gas compressor, particularly of the type used for boosting pressure in gas transmission, process or utility industries and which contains pressure about the shaft/casing interface with the use of dry gas s... | 02/12/2002 |
| 6161835 | Integrated barrier fluid sealing apparatus with visual volume indicator An integrated barrier fluid sealing apparatus includes an annular pressure intensifier surrounding a shaft of an operational device and defining a chamber extending around and along the shaft and containing a barrier fluid. The integrated apparatus also i... | 12/19/2000 |
| 6082183 | Test assembly for fluid tight integrity of pipeline joint An improved system for the non-destructive testing of the fluid tight integrity of an installed fluid transfer line such as a drain pipe or vent and wastewater system of a building. A removable test baffle is held in place between ends of adjacent section... | 07/04/2000 |
| 5906374 | Dual seal barrier fluid leakage control method utilizing linearly displaceable member A method for controlling leakage of a barrier fluid from a dual seal assembly of equipment, such as a pump or valve, employs a barrier fluid supply arrangement connected to a barrier fluid chamber of the dual seal assembly, a pressure intensifier mechanis... | 05/25/1999 |
| 5823541 | Rod seal cartridge for progressing cavity artificial lift pumps A seal cartridge particularly suitable for artificial lift pump rod sealing and for other applications where a rotating drive shaft penetrates a pressurized reservoir which is filled with abrasive-laden liquids, mixtures or slurries. The cartridge exploit... | 10/20/1998 |
| 5772216 | Sealing system The sealing system seals a moving element in a valve. The sealing system includes an internal seal between the valve body and moving element proximate the lading and an external seal between the valve body and moving element proximate the free end of the ... | 06/30/1998 |
| 5755372 | Self monitoring oil pump seal A seal system for an oil well head, wherein the shaft rotates about its axis to drive a progressive cavity type pump. Primary and secondary polytetrafluoroethylene seals surround a sleeve that encircles the shaft. Pressure detectors connect to the space b... | 05/26/1998 |
| 5711532 | Securing and centering devices for a split mechanical seal A split mechanical seal, for mounting to a stationary housing that contains a rotating shaft, including first and second seal ring assemblies, at least one resilient biasing element and at least one axial biasing element. The first and second seal ring as... | 01/27/1998 |
| 5676382 | Mechanical face seal assembly including a gasket An improved seal assembly utilizing a cup gasket having a flange portion secured or sandwiched between side surface of a mating ring and an inner surface of a radially extending side portion of an inner sleeve such that a static seal occurs in an axial di... | 10/14/1997 |
