Abstract: A removable apparatus for upgrade of an in-service pipeline without disrupting the flow of fluid within the in-service pipeline. The removable apparatus comprises at least one enclosure having a top section and a bottom section for temporarily enclosing a pipe section of the in-service pipeline. The top section and bottom sections are sealably disposable around the pipe section. A repairing mechanism for repairing the pipe section or an insertion mechanism for inserting and connecting a pipeline element to the pipe section is disposed within the enclosure.

Abstract: A closure for a container with a lower closure element and a closure cap which can be placed on the lower closure element. The lower closure element is connected to the opening of a container by a base element having a contact flange which rests on the interior of the container against a contact face formed in the area of the opening of the container. At least one locking projection is disposed on the base element in the axial direction of the container closure and at a distance from the contact flange. The locking projection extends over the rim of the opening so that the lower container element is held axially immovable in the container.

Abstract: A portable electronic translating device having an input unit (2), a multi-line display (3) and at least one memory unit. The input unit (2) has a memory key (4), with which a user can store words, sentence fragments or sentences, and their translations, in at least one language. This device can be used as a learning aid for language students, who store their newly learned material in the device and, by entering a previously stored word in one language, obtain the corresponding translation in another language, which they can then memorize.

Abstract: A chair, in particular a work or office chair, having a seat that is pivotal toward the front of the seat about a horizontal pivot axis. The seat is variable in inclination and has a backrest that is overproportionately variable in inclination as a function of the change in inclination of the seat. With increasing inclination of the seat, the backrest follows an additional relative motion with respect to a backrest end of the seat. Pivot levers are positioned to support arms of the chair frame on both sides of the seat. The free ends of the pivot levers are fixedly and non-rotatably attached to the backrest for support. The seat is rotatably connected to the pivot levers approximately in its middle region. The desired relative motions between the seat, seat back and chair frame can be accomplished and varied solely by means of the connection between the seat, the backrest, pivot levers which serve as arm supports or armrests, and the chair frame.

Abstract: A burner apparatus and method for reducing nitrogen oxides that are formed during combustion of gaseous fuel. Primary gaseous fuel and excess oxidant are premixed to form a fuel/oxidant mixture which is introduced into and combusted within a primary combustion zone. Primary combustion products are introduced into a secondary combustion zone. Secondary gaseous fuel is also introduced into the secondary combustion zone and is preferably mixed with the primary combustion products. The mixture of secondary gaseous fuel and primary combustion products is combusted in a secondary combustion zone. A portion of the secondary combustion products are internally recirculated into the secondary combustion zone. The overall combustion products can be externally recirculated and introduced into the primary combustion zone. A portion of the fuel/oxidant mixture, with or without the recirculated overall combustion products, can be bypassed around the primary combustion zone and introduced into the secondary combustion zone.

Abstract: A cylindrical cutting element for a coal cutting machine with a reamer-conveyor worm or reamer spiral for a coal cutting, disposed projecting at a distance from the surface of the cutting element and comprising base elements attached at uniform distances. A chisel holder with an exchangeable chisel is connected to each base element. The chisel holder is inserted with its plug-in connector into a socket of the base element and is maintained therein by a pressure screw. A time-saving assembly of a cutting element, wherein the base elements can be positioned on and fastened to the surface of the cutting element in a simple manner is attained where receiver pockets are cut along the reamer-conveyor worm or reamer spiral at uniform distances into the surface of the cutting element, the undersides of the base elements end in a base whose cross section is matched to the receiver pockets, and the base elements are introduced, positioned by the base, into a receiver pocket and are fixedly connected thereto.

Abstract: Apparatus and process for condensing furnace hot air humidification using aqueous condensate from flue gases generated by the thermal exchanger in the furnace as the primary aqueous input to the evaporator of a humidifier which, preferably, may be integral with the furnace or which may be retrofitted in the field. Use of the system of this invention provides long term reliability and low maintenance to furnace humidification systems.

Abstract: A process for recovery of chromium in an aqueous solution comprising converting the chromium to chromyl chloride, separating the chromyl chloride from the aqueous solution, either as a heavy underlayer, or by extraction into a solvent, purifying the chromyl chloride, hydrolyzing the purified chromyl chloride to form a solution, and drying or precipitating the solution to form chromium, either as chromic acid or a chromate salt.

Abstract: A manually displaceable implement for ground treatment comprising a dead-man safety based on an automatic lowering and blocking of the running wheels (5). A stop (10) is provided on the implement for blockage, against which at least one lowered running wheel (5) rests. The automatic lowering of the running wheels (5) is accomplished by a two-part height adjustment rod (4), which is maintained together by an emergency release element (12). In an emergency, this emergency element (12) is activated by a ripcord, whereby the connection is automatically released.

Abstract: A biosensor comprising a substrate material, at least one antibody covalently immobilized on the substrate material, and a pair of metal contact electrodes for measuring the impedance of the biosensor. A process for producing a biosensor in accordance with this invention as well as a process for utilizing the biosensor are also disclosed.

Abstract: A method and apparatus for combustion of a liquid fuel and oxygen which produces a fishtail or fan-shaped flame configuration.

Abstract: A container having a screw cap and a lower closure member to be connected to the container opening by a base member with a pouring spout connected thereto by an extendible bellows. The screw cap is adapted to be screwed onto and off the pouring spout. In order to render the closure childproof the pouring spout of the lower closure member, beyond its external thread, in a transitional region directed towards the bellows, carries a catch projection, which in the screwing-on direction comprises a gradually rising flank and merges into a steep flank. The cap side wall in the fully screwed-on position is in positive engagement with the catch projection and prevents unscrewing of the screw cap. By pressing inwardly the bellows in the region of the catch projection, the positive engagement between the screw cap and the pouring spout is cancelled and the screw cap is released for being unscrewed.

Abstract: A blade-opening arrowhead wherein at least one blade, preferably two blades, are pivotally mounted with respect to a blade carrying body. A bias force is used to urge an engagement member against a corresponding blade. The bias force is preferably selected so that each blade remains in a normally closed position during flight or during handling of the arrowhead, but yet responsively and quickly moves to a fully open position upon impact or when a sufficient opening force is applied to the blade.

Abstract: A pluggable coupling for pressure lines having a female coupling connector and a male coupling connector. The female coupling connector has two axially aligned connecting bores with different diameters and an annular groove formed between a wall surrounding the larger bore and a nipple surrounding the smaller bore. The male connector can be inserted into the larger bore of the female coupling connector. In the process, the male coupling connector is pushed over the nipple. A sealing element is positioned within a circular male coupling groove of the male coupling connector and sealingly encloses a smooth exterior surface of the nipple. The male coupling connector can be connected and disconnected from the female coupling connector with a relatively small amount of force as compared to the force required to connect and disconnect conventional couplings.

Abstract: An apparatus for glow discharge at pressures of atmospheric and above stabilized between two electrodes spaced apart greater than 3 mm by a swirling gas path. The passage of a reactant gas in the swirling gas stream may be utilized for highly efficient chemical reactions and heating of the gas stream. The simple and compact apparatus for atmospheric pressure glow discharge is suitable for chemical conversion of hydrocarbon gases into higher molecular weight products of greater value, for pretreating combustible hydrocarbon gases for enhanced combustion and for production of intense white light.

Abstract: A bowsight for attachment to a bow. The bowsight has a crosswire frame which is supported by a bracket held to the bow. A pin slide is formed in an inner frame member and has a cylindrical opening. The pins can emit light and are mounted in transparent discs which slide into the cylindrical opening and which are tightened by an Allen screw against a slot in the disc, thereby expanding the disc against the side of the pin slot. The transparent disc gathers surrounding light and transmits or directs the light to the light-emitting pin. A lens or a light-emitting source can be positioned in the cylindrical opening to surround the transparent disc with light. The crosswire frame may be incrementally moved up and down with respect to the bracket by locking a spring-loaded ball bearing in any one of a plurality of detents in the frame. The spring-loaded ball bearing may be forcibly engaged so that the spring is completely compressed thereby locking the ball bearing in a chosen detent.