Abstract: A filter media cartridge and method of making filter media wherein the filter media has a plurality of folds formed into a tube with an internal support core supporting the media material. A plurality of retention bands mounted about the filter media to retain the filter media in position and prevent media from expanding outwardly sufficiently to damage the filter media. At least a one glue bead located circumferentially about the filter media. The glue bead adhering adjacent folds of the media together to provide support and regular spacing of the folds so that the folds are prevented from collapsing with respect to one another.

Abstract: An air filtering system and method for self-cleaning the same is provided. The system has a plurality of air filters including a first filter and at least one neighboring filter. A blower fan pulls air through the filters. A plurality of compressed air injectors are provided adjacent the filters including a first injector and at least one neighboring injector. Self-cleaning is achieved while the blower fan is running by preforming several steps including activating the first injector to force compressed air into the first filter and discharge particulate from the first filter followed by deactivating the first injector. The steps further provide reactivating the first injector and simultaneously activating the neighboring injector while the discharged particulate is airborne to provide an air shield about the first filter and force the discharged particulate away from the first filter and the neighboring filter. These steps are repeated for each filter.

Abstract: A mask assembly adapted for use with a positive airway pressure device, includes a mask frame, an elbow assembly provided to the frame, a cushion provided to the frame, a forehead support assembly, and a neck to connect the frame to the forehead support assembly, wherein the neck includes a pair of side walls having a streamlined design that is made to look sleek and reduce or minimize obtrusiveness. The pair of side walls may take the form of a single wall or more than two walls. The mask frame may include a recessed port structure including at least one port having access to an interior of the frame which at least in part with the cushion defines a breathing chamber in communication with a nasal passage of the patient in use. The mask frame may also include a channel to receive the cushion. The channel is formed by an outer wall and an inner wall and the channel includes an inner surface having a bead to engage with an outer surface of an edge of the cushion.

Abstract: A mask system for delivering air pressurized above atmospheric pressure to the airways of a patient to treat sleep disordered breathing (SDB) by continuous positive airway pressure (CPAP) may include a mask having a cushion configured to form a seal with the patient's nose; two inlet conduits, each of the two inlet conduits configured to extend from a position superior to the patient's head and along a corresponding side of the patient's head, and each of the two inlet conduits being in fluid communication with a corresponding side of the mask to deliver pressurized air to the mask; a first vent arrangement configured to be positioned superior to the patient's head in use and configured to discharge gas to atmosphere during therapy; and a second vent arrangement configured to be positioned inferior to the first vent arrangement in use and configured to discharge gas to atmosphere during therapy.

Abstract: A mask assembly includes a mask frame including a lower portion and a neck extending from the lower portion, a cushion provided to the mask frame and adapted to contact a patient's face, a forehead support assembly provided to the neck of the mask frame, the forehead support assembly including a forehead support and a forehead pad provided to the forehead support, and an elbow assembly provided to the mask frame. The neck includes a pair of side walls spaced apart from one another along an entire length of the neck, the side walls providing an open space therebetween along the entire length of the neck that opens towards a front side of the mask assembly. The pair of side walls comprise an upper converging section wherein the pair of side walls converge towards one another in a downward direction.

Abstract: A system for connecting flow interface equipment to a subsea tree or manifold is disclosed. The system relates to an apparatus adapted to inject fluids into a well having a flow bore. The system includes a connection apparatus adapted to land a conduit on a subsea tree or manifold and to connect the conduit of the connection apparatus to an access port or choke body of the tree or manifold.

Abstract: A minimum floor space air filter unit has an outer housing defined by side walls which has a height that is substantially larger than the base. A blower is mounted in the base. An elongated filter column is mounted in the housing. The blower is positioned below the elongated filter column to draw air with entrained particulate into an air inlet and through the elongated filter column for exiting the housing through an air outlet. Entrained particulate is captured on the exterior surface of the elongated filter column. At least one nozzle is positioned within the interior core of the elongated filter column to pulse air from the interior through the elongate filter media column to remove entrained particulate from the exterior surface.

Abstract: A well testing device for conducting well test operations on an oil, gas, or water well including a production flowline. A conduit guides fluids from the production flowline to the well test device and then back to the flowline. The well test device may include, in various combinations, one or more of a flow measurement device, a sampling device, a sampling chamber to collect sampled fluids from the production flowline, a particle separator, a particle detector, a pressure sensor, a temperature sensor, a controller or data storage module, a choke, and other components.

Abstract: The invention in one of its aspects provides a connection apparatus for a subsea hydraulic circuit and method of use in a sampling application. The apparatus comprises a longitudinal body configured to be removably docked with a subsea hydraulic circuit receptacle. The body comprises a plurality of radial ports axially displaced along the body, and an axial bore accommodating a spool having at least one fluid barrie. The spool and fluid barrier are actuable to be axially moved in the bore to control axial flow paths along the bore between the plurality of radial ports. The apparatus may be configured as a sampling hot stab in an application to sampling a production fluid from a subsea hydrocarbon production system.

Abstract: Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates especially but not exclusively to a diverter assembly connected to a wing branch of a tree. Some embodiments allow diversion of fluids out of a tree to a subsea processing apparatus followed by the return of at least some of these fluids to the tree for recovery. Alternative embodiments provide only one flowpath and do not include the return of any fluids to the tree. Some embodiments can be retro-fitted to existing trees, which can allow the performance of a new function without having to replacing the tree. Multiple diverter assembly embodiments are also described.

Abstract: A crossflow table having a housing and a work surface. The housing includes an air intake path in fluid communication with the work surface. The air intake path has an intake entrance and intake exit. A filter and blower unit are positioned adjacent the intake exit. An air exhaust path has an exhaust entrance and exhaust exit. The exhaust entrance is adjacent the filter and blower unit. The air intake path and air exhaust path generally extend parallel to one another. The filter and blower unit draw air into the air intake path at the intake entrance and pull the air though the air intake path where the air exhausts into the filter and blower unit at the intake exit. The blower unit then pushes the air into the air exhaust path at the exhaust entrance and forces the air through the air exhaust path and out the exhaust exit. Due to the intake and exhaust paths being generally parallel to one another, the crossflow table is very compact in overall dimensions.

Abstract: The invention in one of its aspects provides a connection apparatus for a subsea hydraulic circuit and method of use in a sampling application. The apparatus comprises a longitudinal body configured to be removably docked with a subsea hydraulic circuit receptacle. The body comprises a plurality of radial ports axially displaced along the body, and an axial bore accommodating a spool having at least one fluid barrier. The spool and fluid barrier are actuable to be axially moved in the bore to control axial flow paths along the bore between the plurality of radial ports. The apparatus may be configured as a sampling hot stab in an application to sampling a production fluid from a subsea hydrocarbon production system.

Abstract: The invention provides an apparatus and system for accessing a flow system (such as a subsea tree) in a subsea oil and gas production installation, and method of use. The apparatus comprises a body and a plurality of connectors configured to connect the apparatus to the flow system. A flow access interface is provided on the body for connecting the apparatus to a subsea process apparatus, and the body defines a plurality of flow paths. Each flow path fluidly connects one of the plurality of connectors to the flow access interface to provide an intervention path from a connected subsea process apparatus to the flow system in use. Aspects of the invention have particular application to flow metering, fluid sampling, and well scale squeeze operations.

Abstract: An air filtering system and method for self-cleaning the same is provided. The system has a plurality of air filters including a first filter and at least one neighboring filter. A blower fan pulls air through the filters. A plurality of compressed air injectors are provided adjacent the filters including a first injector and at least one neighboring injector. Self-cleaning is achieved while the blower fan is running by preforming several steps including activating the first injector to force compressed air into the first filter and discharge particulate from the first filter followed by deactivating the first injector. The steps further provide reactivating the first injector and simultaneously activating the neighboring injector while the discharged particulate is airborne to provide an air shield about the first filter and force the discharged particulate away from the first filter and the neighboring filter. These steps are repeated for each filter.

Abstract: An air filter system for use in industrial applications, particularly, in welding operations. The system has a fan for drawing air into a housing and an air outlet for exhausting air from the housing. At least one filter is mounted within the housing between the air inlet and the air outlet. Air is passed through the filter as it is drawn into the inlet and exhausted from the outlet to retain particulates entrained in the air. At least one air injector is mounted adjacent the filter to clean the filter by forcing air into the filter to remove the retained particulate from the filter. An onboard compressed air generator is mounted within the housing to supply compressed air to the air injector for injection into the filter.

Abstract: Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates especially but not exclusively to a diverter assembly connected to a wing branch of a tree. Some embodiments allow diversion of fluids out of a tree to a subsea processing apparatus followed by the return of at least some of these fluids to the tree for recovery. Alternative embodiments provide only one flowpath and do not include the return of any fluids to the tree. Some embodiments can be retro-fitted to existing trees, which can allow the performance of a new function without having to replacing the tree. Multiple diverter assembly embodiments are also described.

Abstract: A system for positioning and drilling in cabinet, drawer, and shelf hardware components generally having a self-centering ruler and a jig template. The ruler has a zero mid-point and graduated measurement markings extending to each side of the zero mid-point toward opposite ends. A channel is disposed along a length of the ruler and has a generally T-shaped cross-section and is configured to slidingly receive a head of the securing bolt. The jig template has an adjustment slot configured to receive a stem of the securing bolt extending from an opening of the channel. A tightening knob securingly engages the stem of the securing bolt so as to secure the jig template between the tightening knob and the self-centering ruler.

Abstract: A system for connecting flow interface equipment to a subsea tree or manifold is disclosed. The system relates to an apparatus adapted to inject fluids into a well having a flow bore. The system includes a connection apparatus adapted to land a conduit on a subsea tree or manifold and to connect the conduit of the connection apparatus to an access port or choke body of the tree or manifold.

Abstract: The invention provides a flow control valve for a subsea hydrocarbon production system and a method of use. The flow control valve comprises an inlet configured to be in fluid communication to an injection fluid conduit and an outlet configured to be in fluid communication with a subsea flow system. A flow control mechanism is disposed in a flow path between the inlet and the outlet and is arranged to adjust a flow rate through the flow path. The flow control mechanism is configured to automatically adjust the flow rate of injection fluid through the flow path according to a pressure differential between fluid pressure at the inlet and fluid pressure at the outlet. Adjustment may be self-regulating, or may be controlled by a hydraulic control circuit.

Abstract: A solar collector comprises a solar absorbing tube comprising enclosure enclosing an absorbing section, comprising a radiation absorbing plate and a tube, containing a working fluid in thermal contact with the plate. The tube extends out of one end of the tube and connects with a condenser wherein the thermal transfer fluid when in a vapor phase communicates with a fluid to be heated within an end fitting. The condenser of a tube is inserted into a thermal pocket sealingly engaged with a gasket within the pipe receiving portion of the fitting, whereby heat transfer can take place between the condensers of the pipes and a fluid flowing via path in the fitting. The pocket is sealed against ingress of heat exchange fluid flowing through the fitting.