Automatic podiatric control molder

Details Automatic podiatric control molder Automatic podiatric control molder

1976-06-01

1977-09-13

Shore, Ronald J.

Plastic article or earthenware shaping or treating: apparatus

With safety feature

425161, 425167, 425389, B29C 306

Patent

active

040478700

ABSTRACT:
A molding press for forming articles from thermoplastic sheet materials comprises a generally hollow, fluid-tight housing, the lower surface of which comprises a flexible gas-tight diaphragm. The housing is movably positioned above a flat base, on which there is placed a mold covered with a softened sheet of thermoplastic material. During a molding cycle, the housing is lowered and interlocked with the base bringing the diaphragm adjacent the mold, and a fluid under pressure is introduced into the housing, causing the diaphragm to exert a uniform force on the thermoplastic sheet and forcing it to assume the contours of the mold. The base is equipped with mechanical and electrical interlock means which cooperate with the housing to insure that the fluid pressure cannot be applied until the housing and the base are safely interlocked and that the housing cannot be separated from the base while fluid pressure is supplied to the housing.

REFERENCES:
patent: 3191235 (1965-06-01), Rougement
patent: 3334383 (1967-08-01), Irvine
patent: 3346923 (1967-10-01), Brown et al.
patent: 3642415 (1972-02-01), Johnson
patent: 3744949 (1973-07-01), Hehl
patent: 3804003 (1974-04-01), Hehl

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