117results about How to "Simple and effective and inexpensive" patented technology

The anti-flashover ring of the present invention includes a substantially cylindrical body having an outer surface with a plurality of passageways thereon. Each of the passageways pass from one of the sidewalls through the body to the other of the sidewalls of the ring. The passageways function to provide fluid communication between the atmosphere surrounding an accessory product such as a bushing insert and the interior of a connector mounted thereon when the connector is being pulled off the bushing insert. The fluid communication prevents a vacuum from forming between the connector and the bushing insert that can lead to a flashover between an electrical probe in the connector and a ground shield of the bushing insert. The anti-flashover ring is also configured to provide an indication to the operator installing the connector of when the connector is fully installed on the bushing insert. Such indication is provided by providing the ring with a width that is equal to length of the lip of the connector when the connector is fully installed. As such, the operator installing the connector continues to push on the connector until the end of the lip aligns with the end of the ring.

A turbomachine combustion chamber has primary and dilution air inlet orifices formed by die stamping to have edges that project into the inside of the combustion chamber, and stress relaxation and / or reduction means in the edges or in the vicinity of the edges of said orifices, said means comprising, for each orifice, one, two, or three slots formed in the edge or around a fraction of the edge of said orifice.

A paving machine that moves in a travel direction and spreads, levels and finishes concrete into a form having a generally upwardly exposed, finished concrete surface that terminates in lateral sides. The paving machine has a main frame with first and second bolsters arranged at opposite ends of the main frame. Each set of bolsters has two hydraulic jacking columns used to raise and lower the machine frame. Crawlers attached to the bottom of the jacking columns engage the ground and move the paving machine in the travel direction. A pair of support beams is attached to the inner surface of each bolster and supported in passageways of a center module of the tractor frame. To extend the maximum width of the paving machine without having to extensively disassemble it, the free ends of the support beams extend beyond outer sides of the bolsters when the distance between the inner sides of the bolsters is at its minimum. This paving machine width adjustment can be performed in the field by moving the bolsters and the support beams attached to them inwardly or outwardly with the crawlers of the paving machine. Also provided is a laterally extendable / retractable cross beam for movably supporting a dowel bar inserter kit on the paving machine.

A steerable structure (21, 27) of the catheter or endoscope type, the structure comprising an elastically or deformable longitudinal body (22, 28) including at least one actuator (16, 38) of material of the shape memory type incorporated longitudinally with the body (22, 28) together with Joule-effect heater means enabling the actuator (16, 38) to be contracted longitudinally in order to cause the longitudinal body (22, 28) to bend, wherein the actuator (16, 38) extends over at least one portion of the body (22, 28) that presents varying stiffness.

A turbomachine including an annular combustion chamber, a sectorized turbine nozzle arranged at an outlet from the chamber, and a sealing mechanism interposed axially between the chamber and the nozzle, the sealing mechanism including an annular gasket that is axially resilient. The gasket includes a first axial bearing mechanism for bearing against a downstream end of the chamber and a downstream annular lip that is sectorized, each sector of the downstream lip being in alignment with a sector of the nozzle and including a second axial bearing mechanism for bearing against an upstream end of the nozzle sector.

A method of assembling together one-piece bladed disks by friction welding, and a damper device for damping vibration of the blades of the disks, the device comprising annular linings for covering the blades and filling the gaps between the blades, the linings being made of elastomer, and means for holding and clamping the linings when mounted on the blades.

An endoscope with deflected distal viewing, comprises a rigid tube containing observation means, themselves comprising a distal deflector prism having a viewing axis that is inclined relative to the axis of the tube, and ultraviolet light guide means housed in the tube and opening out at their distal end onto a prism for deflecting the illuminating light beam in a direction that is substantially parallel to the viewing axis. The invention applies in particular to inspecting parts by the penetration test technique in the aviation field.

A paving machine that moves in a travel direction and spreads, levels and finishes concrete into a form having a generally upwardly exposed, finished concrete surface that terminates in lateral sides. The paving machine has a main frame with first and second bolsters arranged at opposite ends of the main frame. Each set of bolsters has two hydraulic jacking columns used to raise and lower the machine frame. Crawlers attached to the bottom of the jacking columns engage the ground and move the paving machine in the travel direction. A pair of support beams is attached to the inner surface of each bolster and supported in passageways of a center module of the tractor frame. To extend the maximum width of the paving machine without having to extensively disassemble it, the free ends of the support beams extend beyond outer sides of the bolsters when the distance between the inner sides of the bolsters is at its minimum. This paving machine width adjustment can be performed in the field by moving the bolsters and the support beams attached to them inwardly or outwardly with the crawlers of the paving machine. Also provided is a laterally extendable / retractable cross beam for movably supporting a dowel bar inserter kit on the paving machine.

Apparatus for rapidly vibrating tubes containing samples, e.g. biological samples, comprises a tube-support disk and concentric bearings for mounting the disk in a ring that is resiliently-suspended from a frame, the bearings comprising two rolling bearings mounted one within the other. The invention enables the tubes containing samples to be subjected to curvilinear reciprocating motion at high frequency.

A device for supporting and guiding a rotating shaft, in particular a rotor shaft of an airplane turboprop or turbojet, the device comprising an oil squeeze damper around each bearing of the shaft, said damper comprising an annular space surrounding the outer ring of the bearing and defined by annular sealing elements, each having a small number of calibrated oil outlet orifices formed in its outer periphery.

A spacer device for spacing electrical harnesses in a turbomachine such as an airplane turboprop or turbojet is disclosed. The spacer device includes clips fastened on a support. A first clip is mounted on a harness via a retention device which prevents the spacer device from moving relative to the harness, and the spacer device includes a strip mounted around the first clip in order to close the first clip after a harness has been mounted in the first clip. The strip is fastened to the support in a non-releasable manner.

The invention relates to a turbomachine combustion chamber including at least one ignition spark plug carried by an outer casing and extending in guide means carried by a wall of the chamber, the wall forming a body of revolution, the guide means comprising a tubular guide having the spark plug passing axially therethrough and mounted with axial and transverse clearance on a chimney fastened to the wall of the chamber and opening out into the chamber. In order to reduce wear of the spark plug in operation, the spark plug is mounted by being fastened in a sheath, the tubular guide being slidably mounted around the sheath.

A method of designing a multistage turbine for a turbomachine in which each turbine stage comprises a stator row and a rotor row each made up of an annular row of airfoils, wherein, for all of the stator or rotor rows, it consists in simultaneously modifying the shapes of the airfoils of said rows to straighten out the wakes from the trailing edges of said airfoils, then in angularly positioning the rows in such a manner that the wakes from the airfoils of the stator (or rotor) airfoils impact against the leading edges of the stator (or rotor, respectively) airfoils of the rows situated downstream, in order to achieve multistage aerodynamic coupling simultaneously over the turbine as a whole.

A turbojet comprises at least a fan, a compressor, a combustion chamber, a turbine, and a rigid substantially-cylindrical jacket fastened at its upstream end to an intermediate casing and at its downstream end to an exhaust casing, the jacket serving to transmit forces between the intermediate casing and the exhaust casing.

A device for controlling variable-pitch vanes in a turbomachine comprises links connecting the radial pivots of the vanes to radial fingers carried by semicircular elements and bridges of a control ring, the links being mounted in ball-and-socket manner on the radial fingers which are fixed to the control ring. This form of mounting enables all the vanes associated with the control ring to be set to the same angular pitch.

A device for guiding an element in an orifice in a wall of a turbomachine combustion chamber comprises a coaxial ring and bushing mounted one inside the other, the bushing comprising two coaxial annular parts that are fastened to each other by welding and that define a groove for guiding a rim of the ring, welding zones between the parts of the bushing being situated away from the path of the rim of the ring when moved along a privileged transverse direction of ring movement relative to the bushing when the combustion chamber is in operation.

A split ring for mounting with elastic prestress in an annular groove of a rotary part of a turbomachine and having, in the free state, a diameter that is greater than the diameter of the groove, is remarkable in that, in the free state and without stress, the end portions of the ring are circular arcs having a radius of curvature that is substantially equal to the radius of curvature of the annular groove.

A device for assembling together annular flanges by means of fastening bolts, in particular in a low-pressure turbine stage of the turbojet, one of the flanges has an element projecting from its face that faces the other flange and that is received in a notch in said other flange when the relative angular positioning of the two flanges is correct.

Apparatus for rapidly vibrating tubes containing samples, e.g. biological samples, comprises a tube-support disk and concentric bearings for mounting the disk in a ring that is resiliently-suspended from a frame, the bearings comprising two rolling bearings mounted one within the other. The invention enables the tubes containing samples to be subjected to curvilinear reciprocating motion at high frequency.

A turbomachine combustion chamber has primary and dilution air inlet orifices formed by die stamping to have edges that project into the inside of the combustion chamber, and stress relaxation and / or reduction means in the edges or in the vicinity of the edges of said orifices, said means comprising, for each orifice, one, two, or three slots formed in the edge or around a fraction of the edge of said orifice.

A diffuser-nozzle assembly mounted at the outlet from a centrifugal compressor is disclosed. The assembly includes a plurality of vanes carried by a radially inner wall forming a surface of revolution and surrounded by an outer casing, elastically deformable devices interposed between the radially outer ends of the vanes of the nozzle and the outer casing. The elastically deformable devices prevent air from passing between the outer casing and the radially outer ends of the vanes.

A device for controlling variable-pitch vanes in a turbomachine comprises links connecting the radial pivots of the vanes to radial fingers carried by semicircular elements and bridges of a control ring, the links being mounted in ball-and-socket manner on the radial fingers which are fixed to the control ring. This form of mounting enables all the vanes associated with the control ring to be set to the same angular pitch.

A turbojet comprises at least a fan, a compressor, a combustion chamber, a turbine, and a rigid substantially-cylindrical jacket fastened at its upstream end to an intermediate casing and at its downstream end to an exhaust casing, the jacket serving to transmit forces between the intermediate casing and the exhaust casing.

A fuel injection system for an annular combustion chamber of a turbomachine, the system comprising support means for supporting and centering a fuel injector head, and a bowl arranged downstream from the support means and including at its downstream end an annular collar that extends radially outwards and that is cooled by air impacting against its upstream radial surface, and including on said surface means for disturbing the flow of cooling air and for increasing the heat exchange area between the air and the collar.

A device for non-destructive in situ inspection of parts of a turbine engine, the device including a stick carrying at its distal end a pivoting finger carrying at one of its ends a blade for supporting an inspection probe, and at its opposite end a skid for bearing against and / or catching on an element of the engine, the skid being movable in a direction parallel to the longitudinal axis of the finger.