Mold containing an adjustable key

Details Mold containing an adjustable key Mold containing an adjustable key

1989-12-11

1992-02-04

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Cutter guided by or cooperating with peripheral edge of...

264154, 264163, 425298, 425309, 425395, 425553, B29C 4340, B29C 5132

Patent

active

050855719

ABSTRACT:
A mold for forming a container from a sheet of deformable material has upper and lower mold parts with die surfaces in conforming relation to one another. Upper and lower keys, each having a shear surface, are mounted in said upper and lower mold parts, respectively, so that the shear surfaces confront each other to form an opening in the container as the mold parts close. At least one of said keys is mounted so that its shear surface pivots on a plane normal to the motion of the closure of the mold parts.

REFERENCES:
patent: 4108941 (1978-08-01), Kermoian
patent: 4281546 (1981-08-01), Fraleigh
patent: 4304747 (1981-12-01), Lake
patent: 4387068 (1983-06-01), Llabres et al.
patent: 4446088 (1984-05-01), Daines
patent: 4612153 (1986-09-01), Mangla
patent: 4755129 (1988-07-01), Baker et al.
patent: 4909721 (1990-03-01), Warburton

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