Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – For extrusion or injection type shaping means
Patent
1993-03-09
1995-01-24
Mackey, James
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
For extrusion or injection type shaping means
425195, B29C 3330
Patent
active
053837770
ABSTRACT:
A powered clamp for holding mold parts to a platen. The platen has a surface with a mounting slot. The clamp includes a base plate to bear against the platen surface. A pivot bolt with a T-head fits in the slot and is held against tilting relative to the base plate. A pivot nut is threaded to the pivot bolt. A clamping bar passes the pivot bolt. The pivot bolt and clamping bar carry bearing surfaces that enable the clamping bar to tilt relative to the pivot bolt. A bias spring bases the bearing surfaces together. A hydraulic piston-cylinder assembly is mounted to the clamping bar, with a piston rod that extends toward the base plate, and has an external thread. A lock ring is threaded to the piston rod to lock the piston rod against retraction while it is in its extended position.
REFERENCES:
patent: 4472128 (1984-09-01), Ruhl
patent: 4568263 (1986-02-01), Ruhl
patent: 4743192 (1988-05-01), Higuchi
patent: 5096405 (1992-03-01), Pace et al.
patent: 5118269 (1992-06-01), Klose et al.
Mackey James
Mon Donald D.
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