Patents Assigned to Sciaky Bros., Inc.
  • Patent number: 4623774
    Abstract: An automatic welding and annealing machine and specifically a machine for producing unique piston connecting rod assemblies utilized in compressors used in automotive air conditioning systems. The parts produced by this machine are comprised of a rod approximately one-quarter of one inch in diameter and one and three-quarters inch long to which steel balls of approximately one-half inch diameter are welded at each end. These parts are to be used as connecting rods for variable displacement piston pumps. The machine incorporates feeding mechanisms for feeding the separate parts to the welding station and then to the annealing station and also includes a laser inspection apparatus for checking the dimensions of the rods and of the welded and annealed parts, to see that they are within set tolerances. Measuring devices are also provided for monitoring and controlling the electric currents and forces used during welding and annealing of the parts.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: November 18, 1986
    Assignee: Sciaky Bros., Inc.
    Inventor: Ronald N. Ford
  • Patent number: 4564738
    Abstract: This invention relates to a method and apparatus for the alignment of a corpuscular beam, such as an electron or laser beam, to the abutting surfaces of stepped cylindrical segments whose abutting surfaces may be several inches in thickness, so that the beam will be directed along a path which includes all portions of the abutting surfaces to be joined by welding. The parts to be welded are segments of a stepped cylinder having sections of different radius. The parts to be welded are fixed to a table which can rotate the parts about a fixed axis about which the parts are positioned to form the cylinder. The coordinates at several points along the outer periphery of the joint to be welded are determined with respect to two mutually perpendicular axes, one of which is parallel to the axis about which the rotary table and cylinder rotate.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: January 14, 1986
    Assignee: Sciaky Bros., Inc.
    Inventor: Jeffrey M. Estes
  • Patent number: 4486240
    Abstract: This invention relates to a method and apparatus for surface hardening metals over selected areas on a workpiece by means of a concentrated beam of electrons.The electron beam is directed and focused to the surface of the workpiece and is caused to move continuously along a predetermined path over a localized area on the surface. The path is traversed a preset number of times while the instantaneous speed of the beam along the path is varied and the electron beam current is varied in order to bring the selected area of the workpiece above the transformation temperature and close to the melting temperature and maintain it at this temperature for a predetermined time.The beam current is then discontinued to allow the material to be quenched and surface hardened locally.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: December 4, 1984
    Assignee: Sciaky Bros., Inc.
    Inventor: Peter D. Sciaky
  • Patent number: 4376886
    Abstract: This invention concerns a process of welding by an electron beam. The process is one in which the beam is rapidly deflected from point to point of a predetermined matrix of spots over which the beam rests for predetermined lengths of time in order to produce a predetermined distribution of energy over a defined area along the surface of the material being welded along a seam formed at the adjacent edges of workpieces. The length of time the beam is maintained at each position and the total beam power may be varied from spot to spot in order to produce a desired distribution of energy over a given area. This process is useful to avoid defects in partial penetration welds and in the welding of joints in which the gap between the edges to be welded may approach the diameter of the electron beam. The method is also useful in avoiding defects which may normally occur at the beginning and end of a weld seam.
    Type: Grant
    Filed: January 2, 1981
    Date of Patent: March 15, 1983
    Assignee: Sciaky Bros., Inc.
    Inventors: Albert M. Sciaky, William J. Farrell, Julius L. Solomon
  • Patent number: 4179316
    Abstract: This invention relates to a method and apparatus for surface hardening metals by means of a concentrated beam of electrons. The electron beam is directed and focused to a desired spot on the surface of the said workpiece and is caused to move incrementally from one to the next of a predetermined pattern of points on the work surface. The beam is directed to each point in turn for a predetermined length of time and moved from point to point at a relatively rapid rate. The pattern is projected over the desired surface of the work a predetermined number of times so that the material to be heat treated is brought above the transformation temperature and maintained below the melting temperature by close control of the electron beam parameters. A programmable computer retains in its memory a number of predetermined displacement patterns for the electron beam and controls all the electron beam gun parameters and all machine functions.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: December 18, 1979
    Assignee: Sciaky Bros., Inc.
    Inventors: John F. Connors, Douglas D. Bass, Michael G. Bell, Stanley L. Ream
  • Patent number: 4162391
    Abstract: A vacuum sealing means for a high production electron beam welding machine incorporating a rotary indexing table carrying parts to be welded from a loading position to a welding position under a stationery electron beam gun and then to an unloading station. Sealable pockets on the rotating index table carrying the parts to be welded are carried through a sealed off low volume space into a first pre-pumping station where air in the pocket is brought to a pressure intermediate between the atmospheric pressure and the pressure required during the welding of the parts. After pre-pumping, the pockets are indexed to a second pumped area where the pocket is evacuated to the pressure suitable for welding. The table is then indexed through an area at the pre-pumping pressure and then through another sealed off space at atmospheric pressure to the ejection station.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: July 24, 1979
    Assignee: Sciaky Bros., Inc.
    Inventor: Albert M. Sciaky
  • Patent number: 4098448
    Abstract: A method and apparatus for the manufacture of rotary drill bits such as are used for oil well drilling which are constructed from a multiplicity of segments. The segments are provided with registration means for positioning the segments relative to one another and are placed in a fixture where they are sized to a desired outer diameter without sliding the faces of the segment one against the other during the sizing operation. The faces are then brought into abutment, clamped and welded along the abutting surfaces between segments.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: July 4, 1978
    Assignee: Sciaky Bros., Inc.
    Inventors: Albert M. Sciaky, William R. Mello
  • Patent number: 4072844
    Abstract: An apparatus for the working of materials in a vacuum by means of an electron beam. A vacuum machining facility incorporating a first chamber which includes a longitudinal gap which determines a vacuum tight area around the machining line of the parts to be machined, a flexible sealing strip to plug the gap and a second leakproof chamber which houses an electron gun. The second chamber abutting the first chamber, includes an orifice located close to the gap through which the electron beam passes. The second chamber is movable on the first chamber along the gap. An apparatus is included which moves the plugging strip out of and to the side of the gap in the proximity of the orifice, the plugging strip being fully housed inside the gap except in the region close to the orifice.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: February 7, 1978
    Assignee: Sciaky Bros., Inc.
    Inventor: Georges Sayegh
  • Patent number: 4024370
    Abstract: A transformer for application in portable resistance welding machines assembled from toroidal sections of iron core, primary and secondary windings arranged concentrically one with another. The primary is constructed from copper plate modules so as to form a continuous single layer winding of toroidal form in which the separate modules are electron-beam welded one to another in order to form the continuous primary winding. A single turn secondary completely encloses the primary winding and iron core so as to form a compact cylindrical electrical transformer structure. A liquid electrical insulating material is sealed within narrow gaps between iron core, primary winding and secondary winding to allow good thermal transfer from these elements to a cooling medium and at the same time stabilize the relative position of these elements against the dynamic forces developed by the high currents passing through the secondary.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: May 17, 1977
    Assignee: Sciaky Bros., Inc.
    Inventor: David Sciaky
  • Patent number: 4012620
    Abstract: This invention relates to a method and apparatus for determining the relative position between the point of impingement of an electron beam on a work surface and the seam between parts to be welded. The seam is scanned by oscillating a low power electron beam along a path transverse to the scan. The variation in secondary electrons generated as the beam traverses the seam is detected and amplified. The amplified signal is then acted upon by an electronic converter which converts the wave form by instantaneously taking the Nth root at each point of the curve representing the wave form of the amplified secondary electron current wave form so as to improve the resolution of the signal and make possible an improved definition at the point of impingement of the beam with respect to the seam.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: March 15, 1977
    Assignee: Sciaky Bros., Inc.
    Inventor: Peter Daniel Sciaky
  • Patent number: 3993889
    Abstract: This invention is for a method for controlling the motion of an electron beam gun with respect to a workpiece so that the electron beam will follow the path along the seam between the two parts which are to be welded. The electron beam scans the seam in a circular motion. The center of the circle is offset a distance equal to the radius of the circle ahead of the resting position of the electron beam in the direction of travel, by applying the signals R (sin .omega.t + sin .theta.) and R (cos .omega.t + .theta.) to deflection coils which deflect the beam along two mutually perpendicular axes whose origin is at the resting position of the beam. Control of the motion of the electron beam gun with respect to the workpiece is achieved from signals derived as the seam is scanned by the circular motion of the electron beam in the area including the seam. The signals are in the form of pulses generated by the reduction in secondary and reflected electrons as the electron beam traverses the seam.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: November 23, 1976
    Assignee: Sciaky Bros., Inc.
    Inventor: Albert M. Sciaky