Static molds – Including means to apply force to remove or release product... – Pin or sleeve means
Patent
1981-06-10
1982-05-11
Flint, Jr., J. Howard
Static molds
Including means to apply force to remove or release product...
Pin or sleeve means
249 64, 425438, 425577, 425DIG58, B29C 106, B29C 700, B29F 1022, B29F 114
Patent
active
043289452
ABSTRACT:
Mold for injection molding battery containers which include a plurality of thin resilient ribs integral with and projecting at acute angles from the inside walls thereof into the cell compartment(s) to hold the battery's innards therein. The core of the mold includes a compartment-shaping mandrel which in turn includes ejector bars reciprocally slideable within complementary-shaped mortises in the mandrel. Rib-forming cavities are formed in the side walls of the ejector bars. Lips at the distal ends of the ejector bars project toward the mortise walls to produce undercuts at the bases of the ribs which in turn result in the formation of ribs which are detached from the bottom of the container.
REFERENCES:
patent: 3473197 (1969-10-01), Wilds
patent: 3509603 (1970-05-01), Hallsall et al.
patent: 3564660 (1971-02-01), Darnell
patent: 3607440 (1971-09-01), Daniel et al.
patent: 3767156 (1973-10-01), Sullivan
patent: 3816047 (1974-06-01), Mahler
patent: 3905740 (1975-09-01), Lovejoy
patent: 3930780 (1976-01-01), Lovejoy
patent: 3969055 (1976-07-01), Buckethal
patent: 4041603 (1977-08-01), Thune
Flint, Jr. J. Howard
General Motors Corporation
Plant Lawrence B.
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