Abstract: A sun filter for a glass louver panel is disclosed which filters out the heat, glare and the ultraviolet rays which normally penetrate through the glass. The sun filter is formed of a resilient, plastic material such that it may be easily snapped over the existing louver panel without dismantling the panel from its support structure or in any way interfering with the normal operation of the louver panel. The filter has a resilient filter panel which bears against a face of the louver panel and frictional attaching legs which frictionally engage opposite edges of the louver panel to removably affix the sun filter to the panel.

Abstract: A window actuating system, especially in a motor vehicle, including a guide rail, an entrainment device for a window glass plate supported at the guide rail, a force transmission member engaging at the entrainment device, a drive member for the force transmission member attached to the guide rail and selectably with a manual drive unit arranged to be remote from the guide rail or a motorized drive unit coupled with the drive member, the drive member being provided with a reverse brake, especially a wrap around spring brake, and the motorized drive unit being attached directly at the drive member or at the drive rail in the region of the drive member.

Abstract: A roller assembly is provided as an easily replaceable assembly for use with a sliding door. The roller assembly includes a roller or wheel mounted in a roller housing and carried in a cantilevered manner at one end of a leaf spring. The opposite end of the leaf spring is permanently bent to form a hook which is engageable with a mounting tab on an upper or lower door edge through a mounting insertion gap in the door edge such that the leaf spring extends across a bearing tab. When the hook is engaged on the mounting tab the roller is carried in a roller receiving pocket in the door edge such that the leaf spring bears against a bearing tab. The leaf spring allows the roller to move into and out of a roller receiving pocket to accommodate imperfections and obstructions in a stationary track on the door frame in which the roller travels.

Abstract: A disposable finishing article for mounting on a rotatable threaded spindle which may be used with a power tool. The finishing article contains a retaining nut on one side and a backing flange on the other non-removably secured together on the finishing article without the aid of adhesives in such a manner that the finishing article is placed in compression when it is operably secured upon the spindle of the power tool under operational loads. The nut and flange are secured together by upsetting one end of the nut causing it to protrude outwardly over the outer surface of the flange. A metallic inverted cup shaped member and a molded plastic body are carried by the spindle for engaging the outer surface of the backing flange during operation of the finishing article.

Abstract: A disc wheel sanding machine includes a disc wheel rotated by a drive shaft. The sanding machine has a dust extraction device with a dust extraction hood comprising an extraction chamber which surrounds the disc wheel. The hood of the dust extraction device ends above the disc wheel bottom, and a closing wall in the form of a bristle ring or such like protrudes from the bottom of the hood and can be positioned on the work piece. The bristle ring only encircles a part of the periphery of the disc wheel and forms a suction slot diverging outwardly toward the front end in the direction of rotation of the disc wheel and is open toward the work piece. The sanding dust is sucked through the suction slot at the disc wheel periphery into the extraction chamber. The rear end of the bristle ring with regard to the direction of rotation closes in on the disc wheel periphery and forms a rear seal for the suction slot.

Abstract: A child enclosure includes J-shaped frame base members that extend beyond the footprint of a fabric compartment preventing tipping. The fabric compartment of the enclosure closely fits the upright corner posts using tubes allowing a side support rod to be inserted in the upper side rails of the enclosure preventing downward side flex. The close fitting of the post tubes provides increased support to the side rails. The fabric compartment corners are covered at the top edge by a fabric panel to prevent a child from standing up in the corner to and provide increased strength to the side panels enhancing the side panel flex prevention feature. A rectangular frame is stabilized along the short axis by a separator support that prevents the short axis from collapsing. The rectangular frame also includes a U-shaped end piece that provides further support to the compartment along the end.

Abstract: A plurality of spaced, rigid rectangular frames that are vertically adjustable are employed to support manufactured buildings. The frames are formed of pedestals interconnected by vertical trusses. The upper ends of the frames, above the support pedestals are clamped to the flanges of I-beams of the building chassis so as to prevent the building from shifting relative to the foundation.

Abstract: A highway sound barrier formed by one or more panels mounted in a vertical abutting relation, each of the panels being formed from one or more self-supporting foam cement blocks. Each of the blocks having a foam core, a reinforcement grid mounted on the exposed surfaces of the core and a cementitious coating applied to the reinforcement grid for securing the grid to the foam core and to increase the compressive strength of the blocks. Thicknesses of the blocks being sufficient to form a load bearing structure. The panels being anchored to the ground by a helical screw anchor rod embedded in a concrete pad, with the support posts being mounted in either a common verticle plane or alternately offset.

Abstract: Apparatus for anchoring an end of a cable to a structure like a concrete pillar comprises a tubular body having an opening in one end into which an end of a cable may be inserted. Means are provided for gripping an end of a cable within the tubular body. A threaded post is rotatably mounted to the other end of said body. The apparatus also includes an insert that is adapted to be embedded in the concrete structure to which insert the post may be threaded.

Abstract: A CMR (Cellular Mobile Radiotelephone) Cell Site includes a foundation for a CMR equipment edifice. The foundation, together with the edifice, rests on a leveled surface. An antenna tower is mounted on the roof of the edifice and is secured by an antenna mounting brace embedded in the roof of the edifice. The antenna is guyed at three elevations along the antenna's height to three points on the foundation. The edifice encloses a 10-inch-square, steel support column, positioned within the edifice directly beneath the antenna mounting brace, for supporting the antenna tower. Four-inch-thick slabs of concrete are inserted between the floor of the edifice and the support column and between the support column and the roof so as to isolate the interior of the building from electrical disturbances such as lightening.

Abstract: An expanding anchoring device comprising a shaft, base plate, and two pivotally mounted expansion members for engaging the inner surface of a pre-drilled hole.The expansion members, in two forms of the anchoring device, can penetrate and expand into the sidewall of a pre-drilled hole by cutting a lateral notch in the sidewall.In another form of this expanding anchoring device, the expansion members spring open when they are aligned with a pre-cut lateral notch in the sidewall of a pre-drilled hole.

Abstract: A building according to the instant invention comprises a frame of vertical and horizontal components which is connected to a foundation located along the generatrix of a slope surface. The foundation is provided with a device receiving the sloping component of the external loads of the frame and the foundation which is directed along the generatrix of the slope surface.

Abstract: A dual-pane thermal window unit comprises two non-intersecting or, preferably, substantially parallel, spaced window panes, mounted in a window frame, a first of the panes having affixed thereto a first wall of an electro-optical liquid crystal cell providing a selected light transmittance, and a second of said panes delimiting, with a second wall of said cell, a space providing a thermal break. Each of the first and second walls comprises an electrically conductive film composed of plastic and having sufficient supporting strength to maintain the structural integrity of the cell. The window is light weight, economical to manufacture and efficient and reliable in operation.

Abstract: A bolted steel staircase is erected by placing side stringers spaced apart and attached to the upper and lower floors. A series of stair pans are placed on brackets, the brackets having been welded to the stringers in the fabrication location. The nuts are then hand-tightened on bolts which are welded to the brackets. A set of flat metal wedges, each having an angled slot, is driven between the vertical bolts and lances on the sides of the stair pans in order to align the stair pans and drive them against the stringers. After the wedges are driven, the nuts are fully tightened.

Abstract: This invention is directed to ventilators for a roof. In fact, there is disclosed two ventilators, an eave ventilator and a ridge ventilator. Each of the ventilators can be of unitary construction and formed from plastic. The ventilators allow air circulation in the attic of a building or a house so as to maintain cool air in the attic. The result is an increase in the longevity of the structure of the house.

Abstract: A floor construction includes a concrete floor having a main duct embedded in the concrete floor. The main duct has a bottom and a top, with the top being covered by the concrete floor. A service fitting includes a service box and an auxiliary duct means. The service box is located adjacent a side of the main duct and has a plan area and a capacity substantially equal to at least that plan area times a depth of the concrete floor above the bottom of the main duct. The auxiliary duct lays transversely across the top of the main duct and is attached thereto for providing a passage for wiring from the main duct to the service box. The main duct preferably is a multi-cell duct, and the auxiliary duct includes dividers dividing the auxiliary duct into passageways corresponding to the cells of the main duct. This construction provides for a greatly increased capacity for the service fitting in concrete floors of minimum depths.

Abstract: A thermally-tempered, cold curved panel having a sheet of glass, including a resiliently-flexed curvature, and a frame which is adapted to maintain the curvature of the sheet of glass under constraint, as well as a method and a device for producing the curved panel, is disclosed. The frame of the panel includes straight frame sections and curved frame sections which are secured to the sheet of glass, retaining the curvature of the sheet of glass under constraint. The sheet of glass is thermally-tempered being cold-curved at a temperature being between 80.degree. C. and 140.degree. C., such that a resiliently-flexed curvature is formed therein. The curvature is maintained under constraint by a special device while the frame is assembled about the edges of the glass. Once assembled, the frame maintains the curvature of the thermally-tempered sheet of glass under constraint.

Abstract: A building system integrating the combination of aluminum and steel structural elements for the efficient assembly of stone and glass panels in a curtain wall system which is conspicuous for its lack of a grid appearance. A plurality of discrete steel clips are utilized for securing stone panels to supporting mullions. A plurality of aluminum members are secured to structural mullions whereby glass may be mounted thereto. The stone and glass panels are sealably secured adjacent one another while a glazing adapter is constructed for assembly over the structural mullions there behind. A splice facilitates mating engagement of the aluminum mullions to permit relative movement therebetween. In this manner, both steel and aluminum may be utilized most efficiently for the assembly of stone and glass panels in a curtain wall system with improved structural and aesthetic qualities.

Abstract: A head track and partition system using such head track and method of installing the same. The head track includes a horizontal web, a pair of vertical flanges extending downward from the web, and a pair of horizontal coplanar flanges extending laterally outward from the web. The horizontal flanges have a free edge and width greater that the thickness of a sheet of wall panel to be positioned therebelow, thereby creating an exposed flange portion extending outwardly above such wall panel. The exposed flange portion acts both to shield ceiling tiles from slopping of excess joint compound applied to the top end of the wall panel, and to form a cosmetic appearance along the interface of the partition wall and ceiling which is uniform with the T-bars and L-bars of the ceiling grid. The partition system is assembled in few steps, preferably using a head track fabricated at low cost.

Abstract: Clamping units are mounted without fasteners in the joints between wall panels and grip adjoining panels in coplanar alignment. The clamping units are inserted through accessways between the panels and are operated by a tool passed through the accessways. The clamping units are also used to hold upper locking units, each having a slide bolt which engages a ceiling rail, and to hold bottom locking units which engage a bottom rail on which the wall panels are seated. Each panel can be removed independently of the others by tilting after removal of the respective clamping units and associated locking units.

Abstract: A post construction kit for constructing a post implanted in a base terrain which includes a first post section adapted for implantation in the base terrain, at least one other post section adapted for interconnection with the post section to be implanted underground, and an interconnecting arrangement for interconnecting the underground section and at least one other post section.

Abstract: A spacer and fabric mesh reinforcement member for use in laying of glass blocks to form unique wall structure is disclosed. The spacer and fabric mesh member takes the form of an elongate slab having two strips of fabric mesh attached to the respective upper and lower surfaces of the slab. One of the strips of fabric mesh extends outwardly from the first end of the slab adjacent to the upper surface of the slab, and the second strip of fabric mesh extends outwardly from the second end of the slab adjacent to the lower surface of the slab. When the spacer and fabric mesh members are embedded in the lateral joints between courses of blocks, the members are positioned end-to-end, and the extending ends of the strip of fabric mesh cover the butts between the members.

Abstract: Simulated marble panels are mounted in place by an anchor which includes an elongated pin having a pointed remote end with an anchor plate secured to its opposite base end. The anchor plate has a plurality of perforations extending completely through it so that it may be positioned in a recess in the panel and permanently mounted to the panel by means of a bonding agent applied to the recess which flows through the perforations in the anchor plate and covers the anchor plate when it forms an integral bond with the panel. The pin may then be secured to a substrate in any suitable manner.

Abstract: A ballast block is disclosed in the form of a planar plate member. The plate member has a top and bottom surface, front and rear end portions and oppositely disposed lateral edges. The end portions include a mechanism for preventing substantial uplift and rotational displacement of the block when its end portions are interlinked in overlapping relationship with the corresponding end portions of like ballast blocks.

Abstract: A horizontally extending reinforcing bar having a central core in transverse cross-section exhibiting at least three radial fins projecting outwardly symmetrically from the center of the bar to its outer edge. Each pair of adjacent fins define a valley between them containing a pattern of raised surface area. Two in-line reinforcing bars are held together by a coupling device having a housing with multiple flexible inwardly projecting plates from grooves in an inner wall. The plates flex in the direction of insertion of a reinforcing bar and exert a force to prevent removal of the bar.

Abstract: A device for sealing two-piece capsules has a capsule carrier and a capsule holder which are movable relative to one another for the purpose of attaching a cap to a capsule body. In order to bond a cap firmly and tightly to the body of a capsule, the device has a nozzle for applying a viscose sealing material to the inside of the cap. To prevent an excess of sealing material from being applied to the cap, the nozzle is provided with a vacuum mechanism in the form of an annular channel by means of which excess sealing material is removed during the application.

Abstract: A hermetically sealed package wherein the inside of a container having shape-retentive capability is formed from a gas barrier plastic material into which an agricultural product such as rice is filled and sealed together with an inert gas provides an efficient storage and transportation system. Once the product is sealed in this package, it is handled in an integral manner from the packaging area to storage through the distribution channels to the final consumption site. A container formed from a high nitrile resin is suitable for applying the system. Shape-retention characteristics is achieved by using a container formed from a gas barrier plastic material packed with an excess of an inert gas, with the amount of the inert gas adsorbed by the agricultural product taken into consideration, or by using a container made of a gas-barrier plastic material, with a smaller part of the wall being made of a film portion which is thinner than the remaining larger portion of the wall.

Abstract: An envelope handling system for removing envelopes from an upper level conveyor, placing them in stacks on a lower level bucket conveyor, removing the stacks from the bucket, conveyor and side-loading them into cartons, sealing the cartons, conveying the cartons to a packing area, and forming the cartons into a horizontal column for placement into shipping containers. The system includes a spider feeder for removing the envelopes from an upper level conveyor and discharging them downwardly in a vertical direction, pivoting bottom fingers for receiving envelopes from the feeder and collecting them into a stack, hold back fingers for intercepting envelopes in a second stack above the bottom fingers, and transfer fingers for compressing a stack collected on the bottom fingers and urging the bottom fingers downwardly to place the stack onto the conveyor.

Abstract: A cassette containing a group of sealed cells is used as a means for delivering doses of fluid to be injected into a sterilizing chamber. After the cassette is automatically positioned over a piercing mechanism, the cassette is moved downwardly so that a cell is pierced. Fluid is then forced out of the cell by pneumatic pressure into an injector valve, which opens in a manner which does not adversely affect a vacuum within the chamber.

Abstract: A packaging machine and method for simultaneously loading, sealing and severing bags forming part of at least two independent chains of bags. Two juxtaposed nip roll assemblies including axially aligned feed roll portions can be independently actuated in order to selectively feed one or two webs. A drive motor, having a dual output, is selectively coupled to the nip roll assemblies by clutch/brake units which can be selectively actuated. After a bag or bags are loaded, a sealing mechanism is actuated to seal the loaded bag or bags. A sensor monitors movement in a seal unit member and terminates the sealing cycle if movement in the seal member occurs prior to the pressure bar reaching a predetermined position. While a bag or bags are being sealed, a tear off mechanism including a rod-like member is advanced into and through the web path in order to sever the loaded bag from the remainder of the web.

Abstract: Disclosed is a film having antistatic characteristics and a method to make the film. The film comprises a blend of polyether block amide copolymer with an aromatic sulfonamide antistatic agent.

Abstract: The brushwood cutting device comprises a frame structure, a massive circular flywheel disk rotatable about its geometrical axis, and a hydraulic motor mounted on the frame structure for rotating the flywheel disk at high speed. A first flat and rectangular blade has an end attached to the disk through a first, peripheral pivot, while a second blade of same shape has an end also attached to the disk through a second, peripheral pivot, which first and second pivots are diametrically opposed with respect to each other. The frame structure comprises a plurality of vertically positioned transversal plate members, including front and rear plate members and intermediate ones. Each intermediate plate member is provided with an elongated aperture in which the disk and blades rotate. The frame structure is pivotally mounted at the distal end of a hydraulic backhoe whereby the brushwood cutting device can be moved as desired through operation of the backhoe.

Abstract: A mower including a cutting device connected in an articulated manner to a frame, the cutting device including two groups of mowing elements and each one of the two groups of mowing elements including drive elements. A transmission means transmits movement from a driving source to the drive elements of each one of the two groups of mowing elements. The transmission means includes an input means located at least approximately in the middle of the frame seen crosswise to the direction of work and movement distribution means for distributing the movement of the input means to the drive elements. The two groups of mowing elements are connected rigidly to one another, and the cutting device is connected to the frame by a deformable quadrilateral device. The drive elements of each one of the two groups of mowing elements include a transmission that extends over the one of the mowing elements located on the outside end of the corresponding group of mowing elements.

Abstract: A lawnmower has a series of openings in the housing into which wheel axles may be selectively engaged to adjust the cutting height. The axle ends are grooved, and the housing provided with a slot into which a clip is insertible to coact with the groove and retain the axle in position.

Abstract: A frame has mounted thereon an engine and a speed change unit arranged adjacent to each other widewise of the frame to provide a vehicle body. The vehicle body has a front axle supporting a pair of front wheels thereon, a rear axle supporting at least one steering rear wheel, a mount assembly at its front portion for attaching thereto a mower having at least one cutter, and a clipping container mounted on its rear portion. From a clipping outlet formed in the rear portion of the mower, a duct extends rearward generally horizontally under the front axle, is bent upward behind one of the front wheels and is connected to the clipping container.

Abstract: A deck for a rotary lawn mower is disclosed which is designed to be fabricated from a polymeric composition by a blow mold process thereby forming double walls. The cavity between the double walls is filled with a suitable foam for added rigidity and sound absorption. The deck includes a support for an engine which defines an opening in the deck for the output shaft of the engine to extend through to the bottom of the mower, a tunnel for directing the grass clippings having a discharge opening for the clippings, and mounting platforms for the mower wheels and handle are integrally formed therewith in a single forming operation.

Abstract: A horizontal boom extends laterally from a superstructure and includes a boom belt conveyor which receives harvested fruit from upwardly extending belt conveyors. The boom conveyor carries fruit to an inner discharge end above the superstructure for discharge into a vertical passage and then into a container at the bottom of the passage. A downwardly moving vertical conveyor forms one side of the passage and has rows of deformable fingers which lower fruit into the container. A sheet forming the opposite side of the passageway moves the entire vertical conveyor upwardly in response to accumulation of fruit within the container, while the vertical conveyor continuously moves in a downwardly conveying direction to carry fruit to the container.

Abstract: A device for the control of an open-end spinning element, including a pivoted control lever (4) is provided which is capable of assuming three different working positions. In a production position the control lever brings a first drive, running at production speed, into driving contact in the operation of the open-end spinning element. In a braking position the control lever brings a brake to act upon the spinning element. The control lever in a piecing position brings a second drive which runs at a lower speed than the first drive into driving contact with the open-end spinning element. At least the positions determining the production and the piecing position of the control lever are provided with a common control element, capable of being moved back and forth in the direction of movement of the free end of the control lever between at least two switching positions.

Abstract: A method for winding a covered yarn in a covered yarn manufacturing machine. A non-elastic yarn is supplied from a wrapping yarn bobbin and is wrapped around a core yarn made of an elastic yarn to form a covered yarn. The covered yarn is traversed by a traverse guide along a winding bobbin and is wound around the winding bobbin. The traverse guide is displaced along the winding bobbin to a position outside a normal traversing region when the non-elastic yarn on the wrapping yarn bobbin has almost consumed. Thereafter, the covered yarn manufacturing machine is stopped. Then, the consumed wrapping yarn bobbin of non-elastic yarn at supply is replaced by a new wrapping yarn bobbin of non-elastic yarn. The covered yarn manufacturing machine is restarted. The above-described steps of the displacing, the stopping, the replacing and the restarting are repeated with regard to one winding bobbin.

Abstract: A yarn spinning, twisting or doubling machine having bobbin doffing and donning apparatus for the spindles of the machine, the apparatus comprising bobbin conveying means extending along and above a row of spindles, a series of bobbin grippers spaced at the same pitch as the spindles, each gripper being mounted for vertical movement between its respective spindle and the conveyor, each gripper being designed to hold or grip a bobbin at a point beyond one end of a package wound on the bobbin so that the grippers can lift the wound bobbin from its spindle for engagement by means on the conveyor and then release the bobbin for subsequent removal, or grip an empty bobbin on the conveyor and move it to its respective spindle and control means operable to move the conveyor after it has received the full doffed bobbins and to bring empty bobbins into line with the spindles so that the grippers can place empty bobbins on the spindles.

Abstract: A method and apparatus for exchanging roving bobbins on a ring spinning machine or the like. A temporary storage spindle is provided in a service unit which services the ring spinning machine and a roving cutting and piecing apparatus and a spindle are movable between the temporary storage spindle, the bobbin holder of the spinning machine and a spare bobbin frame of the spinning machine to receive and transfer bobbins thereat to the temporary storage spindle, the bobbin holder or the spare bobbin frame. In one exchange process, the bobbin on the bobbin holder is transferred directly to the spare bobbin frame after the bobbin on the spare bobbin frame has been transferred to the temporary storage spindle. Thereafter, the bobbin on the temporary storage spindle is transferred to the bobbin holder. According to another exchange process, the bobbin on the spare bobbin frame is transferred directly to the bobbin holder after the bobbin on the bobbin holder has been transferred to the temporary storage spindle.

Abstract: A residual roving clearing apparatus for clearing a residual roving remaining on a roving bobbin. The residual roving clearing apparatus comprises a bobbin holding device for rotatably holding a roving bobbin, a cutting device for cutting layers of coils of residual roving remaining on the roving bobbin held by the bobbin holding device, and a rotary brush device for clearing the residual roving from the roving bobbin. The residual roving clearing apparatus is capable of efficiently clearing the residual roving from the roving bobbin by cutting layers of coils of the residual roving along a cutting line parallel to the axis of the roving bobbin held by the bobbin holding device, and stripping off the cut layers of coils of the residual roving from the roving bobbin by the rotary brush of the rotary brush device.

Abstract: A false twist texturing unit for filaments comprising a motor block arranged in a stationary manner on the machine, stator defined in the motor block, a shaft of the texturing unit including a rotor thereon with the rotor located in the stator and supported and rotatable therin. Various filament monitoring devices, data transmission elements and a filament cutting device, or the like elements, are supported in a stationary manner in the motor block and are thereby protected from distrubances, like those experienced during a repair.

Abstract: An air turbine starter for use in starting a turbine engine includes a pawl and ratchet clutch having a movable member which selectively prevents engagement of the clutch while providing a pawl raceway surface, or allows clutch engagement. No-load acceleration of the air turbine starter is scheduled to ensure that drop-in speed of the centrifugally responsive pawls is not reached by the ratchet member while clutch engagement is being permitted. The movable member is pneumatically controlled in timed coordination with acceleration of the air turbine starter to prevent crash engagement of the clutch. Clutch ratcheting is also substantially prevented.

Abstract: In a turbojet fuel supply system in which a controlled flow of fuel ql is diverted from between the high pressure pump and the feed flow regulator and recycled upstream of the high pressure pump in order to maintain a substantially constant pressure differential cross the feed regulator, a flow qc is tapped from the hot flow ql for return to the fuel tank and to allow a correspondingly greater portion of cold fuel from the low pressure pump to be mixed with the recycled hot fuel ql delivered to the high pressure pump. If necessary, the tapped hot flow qc is mixed with a flow of cold fuel qf tapped from the low pressure pump output to form a lukewarm mixture qr for return to the tank.

Abstract: Difficulties in starting turbine engines 10 at high altitudes are avoided in a starting system which includes a combustor 34 having a gas outlet 32 adapted to be in communication with a turbine engine nozzle 28, a fuel inlet 36, and an oxidant inlet 38 so that fuel may be oxidized within the combustor 34 by an oxidant to provide hot gases at the outlet 32. The system includes a first pressure vessel 58 adapted to receive liquid oxygen and a second pressure vessel 60 adapted to receive liquid nitrogen. Pumps 62, 64, and conduits 56, 54, 68 establish a flow path between the vessels 58, 60 and the oxidant inlet 38 while a mixing valve 66 is disposed in the flow path to mix the oxygen and nitrogen flowing therein in a desired proportion.

Abstract: A steam-injected free-turbine type of gas turbine is disclosed. In order to avoid the necessity of redesigning the compressor/core turbine, the shaft of the core turbine is modified to provide additional load output. As steam is injected into the system the resulting excess power of the core turbine is taken out of the system by coupling the compressor output shaft with a load. Thus, the core turbine operates as a single shaft turbine in addition to the existing power turbine. A control provides control of the load output of the two turbine output shafts so that the compressor/turbine stays in the matched operating domain.

Abstract: Carbon build-up in a hot gas generator is avoided in a construction including a vessel 24 having a narrow inlet end 26, a narrow outlet end 28 and an intermediate, relatively wide, combustion chamber 30 by either disposing a heat shield 50 on the interior surface 48 of the combustion chamber 30 or locating a flow path 54 for coolant about the exterior surface 52 of the vessel 24, or both.

Abstract: A flow mixer and flame stabilizer structure for an afterburner of a turbofan engine is disclosed having a variable mixer to mix a portion of the cold flow with the hot flow gasses and which also forms a flame stabilizer for a secondary afterburner fuel injection manifold which injects fuel into the cold flow air during afterburner operation. The device forms a flame stabilizer around the secondary, annular fuel injection manifold and has a generally "U" shaped cross-section. One of the legs forming the "U" shape is fixed, while the opposite leg is movable so as to vary the downstream facing opening between the legs. The movable leg also blocks a portion of the cold flow duct to generate localized increases in pressure upstream of the stabilizer. An air scoop located in this upstream portion communicates with the primary afterburner flame stabilizer to direct pressurized air to cool the primary flame stabilizer.

Abstract: Muffler-filter apparatus for reducing both sound and particulates from exhaust gases from an engine. The apparatus includes resonating chambers, flow distribution means and a cellular ceramic core filter module. Filter regeneration mechanism includes a heating element for heating the carbon on the inlet end of the ceramic core to combustion temperature. Particulate ignition resulting in regeneration occurs when combustion air is provided. In alternate embodiments, combustion air first flows through a preheater system. A processor unit with particular logic controls the apparatus. The particular method of regeneration depends on the application in which the muffler-filter is used.