Mold gate permitting the introduction of stiff molding compound into a mold chamber

Abstract

A gate member for admitting plastic material into a mold which comprises a hollow member defining a bore having a longitudinal axis and an inner wall for separating the bore from a mold chamber positioned between mold halves. Aperture means extends through the inner wall, being peripherally spaced from the longitudinal axis and preferably defining an angle of essentially 30.degree. to 60.degree. to the longitudinal axis, diverging outwardly in the direction of the mold chamber. Also, preferably, the inner wall defines a centrally-positioned peak pointing toward the bore and having sloping sides, to assist in directing molten plastic toward the peripherally spaced aperture means. Also, rib means may be provided, pointing inwardly and extending radially from the central portion of the inner wall toward the periphery thereof, to reinforce the inner wall.

Dependencies are inferred from the claim text.