The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 1977
Filed:
Nov. 11, 1976
Richard C Ostrowski, Dunlap, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
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.