Door locking mechanism for batch mixers

Details Door locking mechanism for batch mixers Door locking mechanism for batch mixers

1993-09-29

1994-09-27

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

With specified vent means

366 76, 425447, 425449, 425593, B29B 500, B01F 1502

Patent

active

053502302

ABSTRACT:
A batch mixer includes a mixing chamber in which polymeric material such as plastics and rubber is heated and mixed. The material is fed to the mixing chamber through a hopper. The hopper has a door which is swung open and closed by a fluid-actuated cylinder. A locking mechanism is provided to enable the door to be swung only slightly open by excessive pressure build-ups in order to vent the pressure without permitting an appreciable amount of molten material to escape through the door.

REFERENCES:
patent: 1938377 (1933-12-01), Ducharme et al.
patent: 4298322 (1981-11-01), Anders
patent: 5061078 (1991-10-01), Yada
patent: 5108188 (1992-04-01), Peter

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