Patents Represented by Attorney Lee H. Sachs
  • Patent number: 4159410
    Abstract: A filler material such as in wire form is applied to the work surface of a workpiece through a method and apparatus which moves the wire in a reciprocating motion, alternatively to withdraw from and then reinsert the end of the wire into a molten weld pool generated such as from an electric arc between an electrode and the workpiece, a plasma arc or other heating torch means.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: June 26, 1979
    Assignee: General Electric Company
    Inventor: Ernest B. Cooper
  • Patent number: 4148494
    Abstract: A rotary labyrinth gas seal between a rotating member and a stationary member, one of which includes at least one seal tooth projecting toward a surface of the other member is improved through the provision of an abrasive tip on the projecting tooth. Such abrasive tip comprises an electrodeposited metal matrix which entraps a plurality of abrasive particles protruding from the tip, the thickness of the matrix being less than the longest dimension of the abrasive particles protruding from the tip.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: April 10, 1979
    Assignee: General Electric Company
    Inventors: John W. Zelahy, Norman P. Fairbanks, Robert E. Maegly
  • Patent number: 4148936
    Abstract: A metallic article of a Fe--Ni base, controlled linear thermal expansion alloy is provided with improved environmental resistance without detriment to mechanical properties through the application to and diffusion into the article surface of Cr with or without other coating metals such as Ni. The coating is preferably applied through the pack diffusion method.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: April 10, 1979
    Assignee: General Electric Company
    Inventors: John J. Grisik, David J. Wortman
  • Patent number: 4144433
    Abstract: Metal components having an irregular cross-sectional configuration or made of different metals or alloys are bonded together through a forged joint resulting from application of localized high frequency induction heating combined with high energy rate impacting by preshaping interface portions to be joined as a function of the cross-sectional shapes of the components.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: March 13, 1979
    Assignee: General Electric Company
    Inventors: John W. Zelahy, Terry L. Jones
  • Patent number: 4137949
    Abstract: A conduit such as a metal or flexible material fuel or oil tube is provided with a barrier to metallic fires through the use of the combination of carbon or graphite impregnated with a polymer resin to provide insulative as well as ablative characteristics.
    Type: Grant
    Filed: May 11, 1977
    Date of Patent: February 6, 1979
    Assignee: General Electric Company
    Inventors: Peter J. Linko, III, Stanley C. Harrier
  • Patent number: 4123595
    Abstract: A metallic article is provided with improved resistance to high temperature environmental conditions, particularly hot corrosion resistance, through the interdiffusion with the article substrate of a complex graded coating including an inner portion which includes Al, Cr and at least one of the elements Fe, Co and Ni and an outer portion including at least one element selected from Hf, Pt, Rh and Pd.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: October 31, 1978
    Assignee: General Electric Company
    Inventor: David R. Chang
  • Patent number: 4123594
    Abstract: A metallic article is provided with improved resistance to high temperature environmental conditions, particularly hot corrosion resistance, through the interdiffusion with the article substrate of a complex graded coating including an inner portion which includes Cr and at least one of the elements Fe, Co and Ni and an outer portion including Al and at least one element selected from Hf, Pt, Rh and Pd.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: October 31, 1978
    Assignee: General Electric Company
    Inventor: David R. Chang
  • Patent number: 4115112
    Abstract: A commercially available cobalt-base alloy, sometimes called X-40 alloy, and having a relatively high carbon content, is improved to make it useful in the directional solidification casting process through the addition of a particular amount of aluminum sufficient to avoid severe reaction with casting cores and molds which include silica, without detrimental effect on mechanical properties.
    Type: Grant
    Filed: July 21, 1977
    Date of Patent: September 19, 1978
    Assignee: General Electric Company
    Inventors: Russell W. Smashey, Elmer L. Frey, George V. Cash, George S. Irons
  • Patent number: 4098450
    Abstract: A narrow crevice in a Ni-base superalloy article is repaired by first removal of a complex oxide of at least one metal selected from Al and Ti, by treatment of the oxide in the crevice with gaseous active fluoride ions in a non-oxidizing atmosphere at a temperature at which the oxide will react with the fluoride ions under the conditions around the oxide. The crevice is then repaired in a subsequent step such as by filling with metal or pressure bonding.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: July 4, 1978
    Assignee: General Electric Company
    Inventors: Donald L. Keller, David L. Resor
  • Patent number: 4087589
    Abstract: An article having an outer surface and an inner cavity, such as a hole or channel with a metallic inner surface, is provided with an inner metallic coating on the inner surface and, in one form, an outer metallic coating on the outer surface. The inner coating is provided as a result of decomposition and subsequent thermal homogenization of one or more organic compounds including Al, Cr or Ni or alloys including one or more of those elements. The outer coating can be the same as the inner coating or can be a metallic coating of one of a variety of known metallic coatings.
    Type: Grant
    Filed: November 19, 1976
    Date of Patent: May 2, 1978
    Assignee: General Electric Company
    Inventor: Irwin I. Bessen
  • Patent number: 4074104
    Abstract: An opto-electronic apparatus for sensing the position or inspecting the condition of a target, which is capable of at least partially reflecting light in a scattered manner, includes an incident light source and means to direct light from the source in a narrow incident beam onto the target along an incident beam axis. A photoelectric sensor, which includes light collecting and focusing means as well as photosensitive means for receiving the focused light, provides for collecting and focusing the reflected scattered light along a reflected light axis of the light collecting and focusing means to the photosensitive means which provides an output signal including a portion which is a function of displacement of the focused light from a reference of the photosensitive means. Such reference represents the position of the axis intersection between the incident beam axis and the reflected light axis of the light collecting and focusing means.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: February 14, 1978
    Assignee: General Electric Company
    Inventor: Emmet M. Fulkerson
  • Patent number: 4071183
    Abstract: A fabricated article, including a portion of non-uniform sectional thickness, is provided through an improved method employing a plurality of cooperating, particularly shaped and sized sheet metal members or member portions which, in an article including a cavity, generally define selected inner and outer surfaces of the article. Also employed is at least one particularly shaped and sized insert member to provide increased sectional thickness in a selected portion. The sheet metal members or member portions and the insert member are assembled at bonding surfaces so that the sheet metal members or member portions retain the insert between them. Thereafter, the assembly is fabricated into the article by solid state diffusion bonding at the bonding surfaces.
    Type: Grant
    Filed: January 29, 1976
    Date of Patent: January 31, 1978
    Assignee: General Electric Company
    Inventor: Richard M. Cogan
  • Patent number: 4071638
    Abstract: A metallic article is provided with improved resistance to high temperature environmental conditions through the inclusion of about 0.1 - 10 weight percent Hf in an article surface, such as through coating. A method for providing such a coating includes application of the Hf alone or in combination with other surface protective means. Application of Hf can occur before, during or after use of such protective means.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: January 31, 1978
    Assignee: General Electric Company
    Inventors: David R. Chang, John J. Grisik
  • Patent number: 4065394
    Abstract: A silicone resin base fire retardant system having a temperature capability at least to about 450.degree. F (230.degree. C) combines intumescent characteristics with a crusting and charring capability through use of a combination of an oxide of iron and a phosphate of potassium for crusting, along with a charring material such as tripentaerythritol and a blowing agent, such as melamine, in a silicone resin base to allow for adequate expansion.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: December 27, 1977
    Assignee: General Electric Company
    Inventors: Richard D. Pratt, Paul F. Proffitt, George Webb
  • Patent number: 4052526
    Abstract: A silicone resin base fire retardant system having a temperature capability at least to about 450.degree. F (230.degree. C) combines intumescent characteristics with a crusting and charring capability through use of a combination of an oxide of iron and a phosphate of potassium for crusting, along with a charring material such as tripentaerythritol and a blowing agent, such as melamine, in a silicone resin base to allow for adequate expansion.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: October 4, 1977
    Assignee: General Electric Company
    Inventors: Richard D. Pratt, Paul F. Proffitt, George Webb
  • Patent number: 4044815
    Abstract: A precision investment casting ceramic mold of the self-casting type is made as a unitary mold by providing separately a pattern for a wax charge-holding assembly and a pattern for a wax article casting assembly, each including an alignment portion. The two patterns are secured together at the alignment portions and are supported and located one with respect to the other by a plurality of supporting and locating members. The assembled patterns then are used in the conventional manner to make a ceramic casting mold.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: August 30, 1977
    Assignee: General Electric Company
    Inventors: Russell W. Smashey, Dwight O. Bartell
  • Patent number: 4039296
    Abstract: An improved abradable coating particularly useful to control clearances between relatively moving members in a sealing relationship includes a base portion and an abradable coating portion which is the fusion and interaction product of a mechanical mixture of a plurality of powdered materials comprising a nickel-graphite powder and a nickel-chromium-base alloy powder. One method for making such a seal member includes applying a strippable bond coat of predominantly nickel between a base portion of the member and a subsequently thermal deposited coating.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: August 2, 1977
    Assignee: General Electric Company
    Inventor: Moses A. Levinstein
  • Patent number: 4031274
    Abstract: An article having an outer surface and an inner cavity, such as a hole or channel with a metallic inner surface, is provided with an inner metallic coating on the inner surface and, in one form, an outer metallic coating on the outer surface. The inner coating is provided as a result of decomposition and subsequent thermal homogenization of one or more organic compounds including Al, Cr or Ni or alloys including one or more of those elements. The outer coating can be the same as the inner coating or can be a metallic coating of one of a variety of known metallic coatings.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: June 21, 1977
    Assignee: General Electric Company
    Inventor: Irwin I. Bessen
  • Patent number: 4023252
    Abstract: An improved abradable coating particularly useful to control clearances between relatively moving members in a sealing relationship includes a base portion and an abradable coating portion which is the fusion and interaction product of a mechanical mixture of a plurality of powdered materials comprising a nickel-graphite powder and an aluminum-copper base alloy powder.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: May 17, 1977
    Assignee: General Electric Company
    Inventors: Moses A. Levinstein, Edward J. Bauersfeld
  • Patent number: 4018569
    Abstract: An alloy based on Fe, Co or Ni, and including Al, is provided with improved environmental resistance through the inclusion in the composition of the combination of 0.1-10 weight percent Hf and 0.5-20 wt. % of an element selected from Pt, Rh and Pd. The combination is particularly useful in providing an article coated with such alloy.
    Type: Grant
    Filed: February 18, 1976
    Date of Patent: April 19, 1977
    Assignee: General Electric Company
    Inventor: David R. Chang