초록 ▼

A novel and inventive hand held powder-fed laser fusion welding torch providing manual flexibility for laser welding with powder-fed material. The hand held laser includes a body, handle, and nozzle assembly. The nozzle may be shrouded by a cover that is slightly spaced apart from the nozzle. The ga

A novel and inventive hand held powder-fed laser fusion welding torch providing manual flexibility for laser welding with powder-fed material. The hand held laser includes a body, handle, and nozzle assembly. The nozzle may be shrouded by a cover that is slightly spaced apart from the nozzle. The gap between the two may provide space through which inert gas may flow. Laser light from a remote source shines through the nozzle's central aperture. The nozzle aperture may be circumscribed by powder channel outlets aligned upon a working focal point coincident with the laser beam to treat a workpiece. A proximity sensor may enable selective welding torch operation according to the presence of a workpiece.

대표청구항 ▼

A novel and inventive hand held powder-fed laser fusion welding torch providing manual flexibility for laser welding with powder-fed material. The hand held laser includes a body, handle, and nozzle assembly. The nozzle may be shrouded by a cover that is slightly spaced apart from the nozzle. The ga

A novel and inventive hand held powder-fed laser fusion welding torch providing manual flexibility for laser welding with powder-fed material. The hand held laser includes a body, handle, and nozzle assembly. The nozzle may be shrouded by a cover that is slightly spaced apart from the nozzle. The gap between the two may provide space through which inert gas may flow. Laser light from a remote source shines through the nozzle's central aperture. The nozzle aperture may be circumscribed by powder channel outlets aligned upon a working focal point coincident with the laser beam to treat a workpiece. A proximity sensor may enable selective welding torch operation according to the presence of a workpiece. in which said first and second resilient means respectively comprise a first spring and a second spring each compressed and suitable for extending with a determined extension, said springs co-operating respectively with first abutment means and second abutment means each suitable for interrupting the relaxation of the spring with which it co-operates, each spring exerting thrust on said connection means along the axis, the two springs exerting thrust in opposite directions. 6. The hybrid interrupter device according to claim 5, in which said first abutment means are secured to said connection means. 7. The hybrid interrupter device according to claim 5, in which said second abutment means are electrically and mechanically connected to the third contact, and provide the electrical connection with said connection means. 8. The hybrid interrupter device according to claim 3, in which said return-movement means comprise two portions suitable for being displaced together in mutual abutment, and suitable for being dissociated during opening of the vacuum interrupter. 9. The hybrid interrupter device according to claim 7, in which a first portion of said return-movement means is subjected to a thrust from the first resilient means which makes it possible to displace said first portion over said dead stroke relative to the connection means, and in which a second portion is constrained to move in translation with the drive rod of the device. 10. The hybrid interrupter device according to claim 1, in which the arcing contacts of the gas interrupter are interfitted one in the other when in the closed position, with an overlap distance that is less than or equal to said dead stroke D. 11. The hybrid interrupter device according to claim 1, in which the contacts of the gas interrupter are in mutual abutment in the closed position, and in which delay means for delaying the start of movement of the fourth contact are interposed between said contact and said rod. 12. The interrupter device according to claim 11, in which said rod and the third and fourth contacts are tubular in shape along the axis, and in which said delay means comprise: a first tubular element that is disposed in axial alignment with the fourth contact, that is secured thereto, and that can slide inside the rod while said rod is being displaced, the sliding distance being less than or equal to said dead stroke; third abutment means fixed to an end of the first tubular element where it is connected to the fourth contact; a second tubular element that is secured via one end to the second portion of the return means, that is of a diameter greater than the diameter of the first tubular element, that can slide along the third abutment means along the axis while the rod is being displaced, and that is provided at its other end with an annular cap serving to come into abutment with said abutment means; and a helical third spring disposed along the axis, interposed between the first tubular element and the second tubular element, in abutment at one end against the third abutment means and at the other end against the second portion of the return means. 13. The hybrid interrupter device according to claim 5, in which the connection means are constituted by a metal socket that is circularly symmetrical about the axis, said socket having: a tubular portion which, at its open end, has a first annular shoulder that constitutes the first abutment means; and a cylindrical portion in which an annular recess is provided that is open facing towards the vacuum interrupter and that serves to receive the second spring, and in which the wall that surrounds said annular recess has, at its end, a second annular shoulder for holding the first spring in abutment. 14. The hybrid interrupter device according to claim 13, in which the first portion of the return means has, at one end, an annular wall which comes into abutment against an end of the first spring, and in which the inside dia meter of said annular wall is equal to the outside diameter of the tubular portion of said socket. 15. The hybrid interrupter device according to claim 13, in which the second abutment means are constituted by a cylindrical stud fixed to the third contact and disposed in axial alignment therewith, said metal socket being engaged over said stud and being mounted to slide therein while also providing permanent electrical contact therewith, the tubular portion of said socket having an end-wall serving to come into abutment against said stud. 16. The hybrid interrupter device according to claim 5, in which the magnitudes of the thrusts of the first and second springs are organized to have, at all times, a difference in favor of the magnitude of the first spring, this difference remaining continuously greater than a determined threshold. 17. The hybrid interrupter device according to claim 8, in which the second of the two portions of the return means is electrically connected permanently to a terminal and supports a sliding contact serving to be in electrical contact with a conduction element when the interrupter device is closed, said conduction means being mechanically and electrically connected permanently to the connection means. 18. The hybrid interrupter device according to claim 17, in which said conduction element is rigidly connected to the vacuum interrupter via electrically insulating ties. 19. The hybrid interrupter device according to claim 1, in which a varistor is electrically connected in parallel with the contacts of the vacuum interrupter in order to make it possible to limit the voltage applied to said vacuum interrupter. 20. The hybrid interrupter device according to claim 1, in which a capacitor is mounted in parallel with one of the interrupters or in parallel with each of the interrupters. 21. The hybrid interrupter device according to claim 1, intended to be used as a generator circuit-breaker for a medium-voltage network, in which device said displacement means are organized so that the separation of the contacts of the vacuum interrupter is substantially delayed relative to the separation of the arcing contacts of the gas interrupter, in order for the gas interrupter to cause the current to pass through zero before the vacuum interrupter interrupts the current. 22. The hybrid interrupter device according to claim 21, in which the first abutment means of the dead-stroke link means are organized so that said dead stroke is longer than twice the speed-gathering distance of the moving contact of the gas interrupter.