Metal founding – Means to shape a forming surface – Pattern
Patent
1976-11-11
1977-12-27
Husar, Francis S.
Metal founding
Means to shape a forming surface
Pattern
164246, 164249, 164 34, B22C 702
Patent
active
040649270
ABSTRACT:
A mold assembly for casting articles by the investment molding process. The assembly may include a wax center sprue element through which extends a center support. First and second wax end sprue elements are mounted in spaced relationship on the center support by means of expendable supports embedded in the sprue elements. A wax riser element extends between the spaced end sprue elements and carries wax patterns of articles to be investment cast by means of the mold. An expendable riser support may be embedded in the wax riser element and secured at spaced portions thereof to the end sprue element supports. A plurality of such wax risers may be provided in circumferentially spaced relationship to the center support, each of which may carry wax patterns. The wax riser elements may be provided with longitudinal, outwardly opening parallel grooves with the wax patterns being secured to the riser elements in the grooves.
REFERENCES:
patent: 3094751 (1963-06-01), Horton
patent: 3177537 (1965-04-01), Horton
patent: 3186041 (1965-06-01), Horton
patent: 3344842 (1967-10-01), Cameron
patent: 3520350 (1970-07-01), Watts
patent: 3572421 (1971-03-01), Mezey et al.
patent: 3648760 (1972-03-01), Cooper
patent: 3830285 (1974-08-01), Schrader, Jr.
patent: 3854832 (1974-12-01), Cowper
Caterpillar Tractor Co.
Husar Francis S.
Lin Kuang Y.
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