Device for preparing and ejecting a chemically reacting mixture

Details Device for preparing and ejecting a chemically reacting mixture Device for preparing and ejecting a chemically reacting mixture

1987-08-21

1990-02-13

Huppert, Michael S.

Dispensing

Plural sources, compartment, containers and/or spaced jacket

With common discharge

222149, 222342, 239114, 239116, B67D 108

Patent

active

048999121

ABSTRACT:
A device for preparing a chemically reacting mixture and for ejecting the mixture into a mold, the mixture comprising at least two components, in particular a mixture of isocyanate and a polyol that reacts completely to form polyurethane, the device having a mixing head with an outwardly opening bore, and a reciprocable ram coupled to the head. The ram has an ejector rod axially movable in the bore for therewith defining a mixing chamber and for ejecting the mixture from the chamber. The head has inlet passages for inletting the components into the chamber for preparing the mixture. The mixture head has another bore extending perpendicular to the bore in which the rod slides, and a ceramic body is located in the other bore for stripping off a film of the mixture from the rod during its axial return movement.

REFERENCES:
patent: 4239732 (1980-12-01), Schneider
patent: 4408627 (1983-10-01), Harris
patent: 4523696 (1985-06-01), Commette et al.

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