Device for the production of a reaction mixture from at least tw

Details Device for the production of a reaction mixture from at least tw Device for the production of a reaction mixture from at least tw

1992-06-15

1994-02-01

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

422105, 422112, 137 1, 13762565, C08F 200, G05B 100, G05D 1600, F17D 100

Patent

active

052830403

ABSTRACT:
In the production of a reaction mixture which forms plastic material, in particular foamed plastic material, from at least two flowable reaction components, the inlet members or other switch-over members which must be switched over in a precise fashion, are controlled by a sliding valve comprising a slide which is assigned a restoring spring which operates in opposition to a moving electromagnet, and a holding electromagnet. First, the holding electromagnet is fully activated whereupon the moving electromagnet is activated. Following the build-up of force of the moving electromagnet, the holding electromagnet is switched off so that the inlet member or other switch-over member opens abruptly.

REFERENCES:
patent: 3788337 (1974-01-01), Breer
patent: 4396037 (1983-08-01), Wilcox
patent: 4422475 (1983-12-01), Aspinwall
patent: 4836248 (1989-06-01), Stegmaier
patent: 4889153 (1989-12-01), Zepernick et al.
patent: 4904451 (1990-02-01), Proksa et al.

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