Settable shutter device

Details Settable shutter device Settable shutter device

1981-04-13

1983-10-04

Makay, Albert J.

Valves and valve actuation

Rotary valves

Ball valve

251138, 251228, F24F 7013

Patent

active

044071884

ABSTRACT:
A shutter blade device comprises a plurality of shutter blades which are pivotable each about its own tangentially extending pivot axis. Each shutter blade is provided with an elongated extension by means of which it passes through a slot into the interior of the apparatus body where the extension with its terminal portion meshes with an axially movable driver means. The driver means can be actuated electromagnetically or manually. The device is particularly suited for ventilators.

REFERENCES:
patent: 957776 (1910-05-01), Llg
patent: 2850258 (1958-09-01), Lazich
patent: 3072041 (1963-01-01), Downing
patent: 3263906 (1966-08-01), Ward
patent: 3284044 (1966-11-01), Zaleske et al.
patent: 3960464 (1976-06-01), Downing

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