Closure plate and sliding closure unit

Details Closure plate and sliding closure unit Closure plate and sliding closure unit

1984-11-06

1986-07-22

Rolla, Joseph J.

Dispensing

Molten metal dispensing

Flow controllers or assists

222561, B22D 4108

Patent

active

046014160

ABSTRACT:
A sliding closure unit includes at least one stationary plate having therethrough a discharge opening, and a movable plate mounted in sliding contact with the stationary plate, the movable plate having therethrough first and second discharge openings and including a closing area. Guides define alternative first and second paths of movement of the movable plate in directions along respective first and second tracks extending between the closing area and the first and second discharge openings of the movable plate. A single drive is connected to the movable plate for moving the movable plate along a selected such path between a closed position whereat the closing area is aligned with the discharge opening of the stationary plate and a selected open position wherein one of the discharge openings of the movable plate is aligned with the discharge opening of the stationary plate. The guide structure is adjustable when the movable plate is in the closed position thereof, without moving the movable plate, to selectively switch between the first and second paths. The movable plate includes three rectilinear surfaces defining edges of the plate and relatively positioned to extend along the three sides of an imaginary equilateral triangle. Centers of the first and second discharge openings of the movable plate are located on bisectors of respective angles of the imaginary triangle.

REFERENCES:
patent: 4249680 (1981-02-01), Kimura et al.
patent: 4508241 (1985-04-01), Bauer et al.

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