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:
Mar. 13, 1984
Filed:
Sep. 20, 1982
Gordon J Donahue, West Henrietta, NY (US);
Voplex Corporation, Pittsford, NY (US);
Abstract
Molding apparatus 10 or 11 supports a tough, resin ball core 15 in the center of a spherical mold cavity having upper and lower mold parts 12 and 13. Core 15 is about half the diameter of the mold cavity allowing room for foamed resin exterior 16 to form over and around core 15 filling the mold cavity and completing the spherical ball. A pin support 20 formed as a single pin 21 or a pair of identical pins 31 holds core 15 in the center of the mold cavity and is withdrawn after the ball is molded. The pin support is arranged at the mold parting plane and extends through the parts to the mold exterior thus providing full support and accurate location of the core within the mold cavity. A coupling element on pin support 20 is formed as a hook 28 or other engageable element outside the mold and is used for placing the core in the mold and also for supporting the ball for curing after molding.