Self-tapping support for shell molds
Номер патента: CA1209781A
Опубликовано: 19-08-1986
Автор(ы): Dennis A. Belliveau, Eugene W. Thomas
Принадлежит: Hitchiner Manufacturing Co Inc
Опубликовано: 19-08-1986
Автор(ы): Dennis A. Belliveau, Eugene W. Thomas
Принадлежит: Hitchiner Manufacturing Co Inc
Реферат: SELF-TAPPING SUPPORT FOR SHELL MOLDS Abstract of the Disclosure A method of casting metal in a gas permeable shell mold in which a vacuum is applied to an external upper mold surface by engaging the mold in the downwardly facing opening of a generally cylindrical vacuum chamber, defined by a chamber wall with a threaded region sized and shaped to snuggly engage a side mold surface. Engagement is effected by forcing the mold into the chamber opening while causing relative rotation of the mold and chamber.
Investment shell molding apparatus and method
Номер патента: CA1277820C. Автор: John H. Simmons,Gerald J. Seymer. Владелец: Precision Metalsmiths Inc. Дата публикации: 1990-12-18.