Abstract: This disclosure relates generally to corrugated pipe, and more particularly to corrugated pipe with an outer wrap. In one embodiment, a pipe includes an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests, separated by corrugation valleys. The pipe also includes an outer wrap applied to the outer wall. The outer wrap may include fibers and plastic. The outer wrap may span the corrugation crests producing a smooth outer surface.

Abstract: A system for modulating air flow in a gas turbine engine is provided. The system may include a seal wall comprising an opening, a seal door configured to slideably engage the seal wall, and an actuator configured to move the seal door over the opening. In various embodiments, the system may include a surface forward of the seal door. The seal door may be configured to seal a passage through the surface and the opening of the seal wall. A track may be disposed under the seal door. The track may comprise cobalt. Rollers may be coupled to the seal door with the rollers on the track. The seal door may comprise a nickel-chromium alloy. A sync ring may be coupled to the seal door. The actuator may be coupled through the sync ring to the seal door.

Abstract: A metering system uses an electronics assembly with a single transducer to determine flow rate. The meter assembly emits an ultrasonic beam from the transducer and splits the ultrasonic beam into a first partial beam and a second partial beam. The first partial beam is transmitted over a first path that returns to the electronics assembly, and the second partial beam is transmitted over a second path that returns to the electronics assembly. The first path goes over a first net distance of a measuring channel. The second path goes over a second net distance of the measuring channel. The meter assembly detects the return of the first partial beam and the second partial beam, measures a time difference between the return times, and determines a measurement of a fluid flow through the measuring channel based on the time difference.

Abstract: A vacuum dust extraction system includes a snorkel coupled to the implement end of an air tool, a dust bellows surrounding the air tool's implement and fastened to the outboard end of the snorkel, a pneumatically powered water filtration industrial vacuum, and a suction hose coupling the snorkel to the vacuum. The apparatus features an improved coupling arrangement for attaching the snorkel to the barrel of the tool driver that permits the apparatus to work with a wide assortment of air tools.

Abstract: Systems and methods for determining operating discrepancy a process heater. The discrepancy may be identified by solving a fired-systems model of the heater. The fired-systems model is then compared to current operating data. If the sensed current operating data is outside of the expected value(s), as defined by the fired-systems model, the systems and methods may take a remediation action to resolve the discrepancy. The discrepancy may include convection fouling identification and identification of tramp-air leaks within the process heater that are otherwise not easily detected by a human operator.

Abstract: A vacuum dust extraction system includes a snorkel coupled to the implement end of an air tool, a dust bellows surrounding the air tool's implement and fastened to the outboard end of the snorkel, a pneumatically powered water filtration industrial vacuum, and a suction hose coupling the snorkel to the vacuum. The apparatus features an improved coupling arrangement for attaching the snorkel to the barrel of the tool driver that permits the apparatus to work with a wide assortment of air tools.

Abstract: Disclosed herein is a method of manufacturing a double walled section of an aerofoil (701) of a gas turbine engine (10), the method comprising: forming a plurality of columns (402) on an outer surface of a first structure; forming a plurality of columns (402) on a surface of each of a plurality of parts of a second structure; and forming a double walled section of an aerofoil (701) by attaching the ends of columns (402) on each part of the second structure to the ends of columns (402) on the first structure such that the first structure is an inner wall (401) of the section of the aerofoil (701) and the second structure is an outer wall (501) of the section of the aerofoil (701).

Abstract: Railway rails are welded in situ by induction welding with an insert (3) between the ends of the rails (1) being welded. The insert (3) compensates, at least in part, for the loss of rail length that occurs in the welding process. Preferably the ends of the rails are pushed apart (e.g. by the length of rail consumed in the welding process) before the insert (3) is placed in position, thereby allowing a longer insert to be used. Induction heating may be performed with a split head (5) that can be opened so as to be placed around a rail in situ and then closed to carry out induction heating.

Abstract: A method and apparatus that allows an animated interactive talking character to appear on a user's screen when conducting an Instant Messaging (IM) session. The character which is displayed on the user's screen is determined by a profile for the sender of the message. This allows a user to pre-select which character will be displayed on the screen of recipients of the instant messages.

Abstract: A method and apparatus that allows an animated interactive talking character to appear on a user's screen when conducting an Instant Messaging (IM) session. The character which is displayed on the user's screen is determined by a profile for the sender of the message. This allows a user to pre-select which character will be displayed on the screen of recipients of the instant messages.

Abstract: A dispensing closure assembly for a drink container. The assembly has an occludable nozzle able to close a dispensing path way when the nozzle is in one condition relative to an occlusion providing member of the assembly, and to open a dispensing pathway when the nozzle is in a second condition relative to the occlusion providing member. The nozzle is movable from the raised non occluded open and dispensing condition to the lowered occluded non-dispensing closed condition against a bias. The nozzle is releasably latchable in the closed condition. The release involves a rotation of one part of the assembly relative to another to allow axial movement of the nozzle.

Abstract: A method and apparatus that allows an animated interactive talking character to appear on a user's screen when conducting an Instant Messaging (IM) session. The character which is displayed on the user's screen is determined by a profile for the sender of the message. This allows a user to pre-select which character will be displayed on the screen of recipients of the instant message.

Abstract: A container closure includes an access, which can receive a drinking straw, which is able to be folded down into a groove by the pivotal movement of member, which closes off the drinking straw by engaging it across an upstanding flange or projection.

Abstract: 3-Isochromanone is prepared by reacting o-tolyacetic acid with sulphuryl chloride in the presence of a free radical initiator, e.g. AIBN, followed by ring closure of the 2-chloromethylphenylacetic acid so formed with a base, e.g. potassium bicarbonate.

Abstract: "One-pot" process for preparing methyl 2-(2-methylphenyl)-3-methoxypropenoate by the formylation and subsequent methylation of methyl o-tolylacetate in an aromatic hydrocarbon solvent in the presence of an alkali metal base and a phase transfer catalyst. The product of the process is useful as an intermediate in the manufacture of fungicides such as those described in EP 370629.