Abstract: There is provided an improvement in a process and apparatus for preparing panels used in the manufacture of protective garments with compression platens. The platens are provided with at least one heating element which is tensioned by spring means and forms a pattern for a panel. Two panels may be formed simultaneously each having seamed leg and arm portions and are to be joined by heat sealing along the back.

Abstract: A recreational vehicle includes a lower body and a vertically telescoping upper body. The upper body includes a second floor, fully suspended when the upper body is raised, and resting on stops when the upper body is lowered. A lift mechanism includes a take up drum, lift line, and pulley system to raise and lower the upper body including the upper portion of the telescopic elevator shaft while telescoping corner posts support and guide its motion. A elevator has bottom and top floors connected by vertical columns and a lift cable extending from the base of each column through top and bottom pulleys of an adjacent corner post to a power take up drum to raise and lower the elevator. A vertically movable bathroom is similarly provided.

Abstract: The present invention relates to an abrasive cleaning device for tubing useful for brushing and reaming, which comprises: (a) an axial shaft adapted to be attached to a power tool chuck and having a central longitudinal axis; (b) a generally flat rear wall attached to the shaft; (c) at least two working members, each of the working members having two walls, a first wall and a second wall and having an angle of at least 45.degree. between the first wall and the second wall, the first wall having a tubing reaming blade thereon; and the second wall having thereon abrasive for abrading tubing; (d) hinges connected to the rear wall and to the working members such that the working members are hingedly connected to the rear wall and have a first position and a second position relative to the rear wall, the second position being such that the second wall is hinged outwardly by at least about 20.degree.

Abstract: A fuel pump within the main shaft of a turbine engine comprises a fuel tube extending axially through the shaft, a first shaft wall and the second shaft wall spaced apart from each other at one end of the tube to define a flow passage therebetween, a plurality of substantially radially aligned vanes extending across the passageway, an annular cavity in fluid communication with the outlet of the vaned passageway and a plurality of circumferentially spaced injector nozzles in fluid communication with the annular cavity and opening into the combustion chamber of turbine engine. The pump vanes impart sufficient energy to the fuel to overcome friction losses in the injector nozzles and to overcome the pressure within the combustor chamber. In addition, the energy imparted to the fuel forms a fuel barrier which separates the combustor chamber pressure from pressure within the fuel tube.

Abstract: The content of hydrogen chloride and phosphorous acid of crude amino organic phosphonic acids, especially diethylenetriaminepentakis (methylene phosphonic acid) is reduced by solvent extraction into an alcoholic phase leaving purified phosphonic acid behind.

Abstract: A turbine engine, having a cooling passage diverting a part of the airflow from the turbine compressor for impingement upon the turbine blades, includes a concentric pair of apertured rings disposed in the passage for variably obstructing flow through the cooling passage between zero and a maximal value. One of the rings is fixed to the turbine housing, while the other of the rings is rotatable with respect to the first ring and the housing. The mobile ring can be rotated by a pressurized cylinder and piston assembly, or by a biasing device causing abutment of a stop on the second ring against an abutment surface on a cam. The cylinder and piston are actuated, or the cam is rotated, in dependence upon an engine operating characteristic such as engine speed, pressure, temperature, flight condition or other determinable parameter.

Abstract: A particulate hydrated trisodium phosphate composition useful in heavy duty cleansers has a core and shell structure, the shell being of trisodium phosphate hexahydrate and the core comprising trisodium orthophosphate dodecahydrate and sodium hydroxide. The composition may be made by prilling to form an intermediate body with solid shell and a liquid or solid/liquid core followed by further cooling.

Abstract: A support comprising generally a plurality of stiff wire or rod members in detachable combination with a sleeve and locking ring. Each wire or rod has a generally vertical intermediate portion, and is bent outwardly on its lower portion. The sleeve holds the lower bent portions in place so that they act as support legs which can have additional appendages on their feet. The upper portion of each wire rod member is likewise bent outwardly to accomodate the supporting structure such as a plant pan or table top. On the intermediate portions adjacent to the upper bent portions is a similar sleeve and locking ring.

Abstract: A seal continuously maintains a condition of fluid sealing between a housing and a shaft rotatably mounted in the housing, independently of the speed of rotation of the shaft. The seal includes a higher speed seal and a lower speed seal each disposed between the housing and the shaft. One of the seals is positioned axially stationary with respect to the shaft. The other of the seals is mobile (either axially or radially) with respect to the shaft, between a first position in sealing contact with the housing and shaft, and a second position out of sealing contact with the housing and shaft. Preferably, the lower speed seal is mobile, so as to be moved out of contact with the shaft when the higher speed seal operates effectively, so as to minimize wear on the seal.

Abstract: A turbine engine construction is provided with novel shroud cooling means. The turbine engine includes a compressor having its outlet open to a combustion chamber into which fuel is also introduced. The hot expanding gases resulting from the combustion of the fuel within the combustion chamber exhaust through a plurality of circumferentially spaced and relatively stationary stator vanes and through one or more turbine stages to rotatably drive the same. A portion of the outlet gases from the compressor, however, are diverted from the combustion chamber and impinge upon an annular shroud secured to the support housing around each turbine stage in order to cool the shroud and minimize its thermal expansion. From the shroud, the cooling air flow passes through a fluid passageway formed through one or more stator vanes and is returned to the combustion chamber.

Abstract: A turbine shroud assembly is provided for use in conjunction with a turbine engine having a turbine rotor consisting of a disc and plurality of blades attached to and extending radially outwardly from the disc wherein the outer tips of the blades are axially tapered at a predetermined angle. The shroud assembly comprises an annular shroud positioned around the turbine blades and tapered axially at the predetermined angle such that the shroud is evenly spaced radially outwardly from the turbine blades. A plurality of circumferentially spaced bell crank assemblies attach the shroud to a turbine support housing and, in response to thermal expansion of the shroud, axially shift the shroud in a direction to decrease the clearance between the shroud and the turbine blade tips.

Abstract: A gas turbine engine is provided and comprises a housing having an air inlet and an exhaust outlet with a fluid passageway formed through the housing for connecting the inlet to the outlet. A low pressure spool assembly comprises a first shaft rotatably mounted within the housing and has at least one low pressure compressor stage secured to one end of the first shaft and a low pressure turbine stage secured to the other end of the first shaft. The low pressure compressor stage is disposed within the fluid passageway immediately downstream from the housing inlet while, conversely, the low pressure turbine stage is disposed within the fluid passageway and immediately upstream from the outlet.

Abstract: A bearing mounting with cooling means is provided which is particularly suited for use in turbine engines. The device comprises a housing coaxially connected to a rotating shaft while a bearing is operatively disposed between a relatively stationary member and one end of the housing. A heat sink, which can comprise one or more stages of compressor for the turbine engine, is connected to the other end of the housing. An annular fluid chamber is formed axially along the housing between its ends and tapers radially outwardly from the second end and to the first end of the housing. The annular chamber is partially filled with a heat conductive liquid. Heat energy from the bearing is conducted to the liquid which vaporizes and expands toward the second end of the housing whereupon the heated gas transfers its heat energy to the heat sink and recondenses. The recondensed liquid is then returned by centrifugal force to the first end of the housing.

Abstract: This invention consists of a device for retrieving objects from the floor or otherwise that have been dropped or are out of the reach of persons suffering from injuries or infirmaries which prevent bending or stooping. Persons recovering from back surgery may find this device extremely beneficial in picking up items such as sheets of paper, pencils, cans or other materials such as are below or otherwise out of their reach while they remain in a normal standing position.

Abstract: A starting system is provided for a turbine engine of the type having a housing, a turbine shaft, and turbine blades mounted to the turbine shaft. The starting system comprises a housing defining an auxiliary combustion chamber and having a source of combustible fuel and oxidizer connected to the chamber. An ignitor, preferably powered by a magneto rotatably driven by flowing oxygen or fuel, ignites the fuel mixture in the combustion chamber. A fluid passage is connected at one end to the combustion chamber and is open at its other end to the turbine blades on the turbine shaft so that hot exhaust gases expand from the auxiliary combustion chamber, through the fluid passage and impinge upon the turbine blades to rotatably drive the turbine shaft. When the rotational speed of the turbine shaft achieves a predetermined amount, the main combustion chamber of the turbine engine is ignited in the conventional fashion.

Abstract: A bearing lubrication system for use in a gas turbine engine which utilizes empellers on the drive shaft to pump a lubricant into a lubricant transfer housing. At least one passageway is formed in the transfer housing which directs the lubricant from the pump to a bearing. The lubricant passes through the bearing and thereafter is returned to the pump for the beginning of a new lubrication cycle.