Patent ID: 6575723
Filing Date: 2003-06-10
Classification: B29C

Abstract:
A mold base system comprising:a. first and second mold bases each comprising: i. a plurality of outside walls having respective top and bottom surfaces; ii. a floor; iii. a plurality of lugs upstanding from the floor and arranged to form the corners of a selected geometric shape that defines a perimeter; and iv. at least one rib between each lug and an associated outside wall; b. an ejector housing comprising: i. a central wall, and a pair of side walls fastened to the bottom surface of the first mold base; and ii. a pair of columns upstanding from the central wall; c. an ejector plate guided on the ejector housing columns for sliding toward and away from the first mold base; d. a cap joined to the ejector plate; and e. a plurality of ejector pins each having a head captured between the ejector plate and the cap, and a shank that is located inside the geometric shape periphery defined by the mold base lugs, the ejector pin shanks being capable of entering an insert that is removeably holdable in the first mold base lugs.