Toy T Shigekawa

Deceased

from El Dorado Hills, CA

Also known as:
  • Toy C Shigekawa
  • Toy Shigekawa Revocable Trus
  • Toy Shigekawa Revocalbe Trus

Toy Shigekawa Phones & Addresses

  • El Dorado Hills, CA
  • 8081 Dick Cook Rd, Loomis, CA 95650
  • Orangevale, CA
  • Carmichael, CA
  • Reno, NV
  • Sacramento, CA

Us Patents

  • Method And Device For Evaluating Penetrants

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  • US Patent:
    39581195, May 18, 1976
  • Filed:
    Aug 5, 1974
  • Appl. No.:
    5/494937
  • Inventors:
    Toy T. Shigekawa - Orangevale CA
  • Assignee:
    The United States of America as represented by the Secretary of the Air
    Force - Washington DC
  • International Classification:
    G01N 2116
  • US Classification:
    250302
  • Abstract:
    A method is provided for evaluating fluorescent penetrants in which a penetrant to be evaluated is applied to a bevelled edge of a laminate of adhesively bonded metal sheets, the edge having shallow, parallel grooves formed therein between the metal sheets. After removal of excess penetrant from the edge, a developer is applied thereto and the edge is exposed to ultraviolet light. By observing the appearance of the bevelled edge, e. g. , the brightness of the parallel lines resulting from penetrant being drawn from the grooves through action of the developer, an indication of the efficacy of the penetrant is obtained.
  • Test Panel For Evaluating Inspection Penetrants

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  • US Patent:
    40784177, Mar 14, 1978
  • Filed:
    Mar 24, 1977
  • Appl. No.:
    5/780956
  • Inventors:
    Toy T. Shigekawa - Loomis CA
  • Assignee:
    The United States of America as represented by the Secretary of the Air
    Force - Washington DC
  • International Classification:
    G01N 1908
  • US Classification:
    73 1R
  • Abstract:
    A test panel for use in evaluating fluorescent penetrants and being composed of a spring steel substrate having surfaces coated with a thin electroless nickel plating capable of producing stress induced microcracks in the plated surfaces.

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