Slot sealing valve for vacuum coating apparatus

Details Slot sealing valve for vacuum coating apparatus Slot sealing valve for vacuum coating apparatus

1976-05-17

1977-12-27

Nilson, Robert G.

Valves and valve actuation

Mechanical movement actuator

With pivoted valves

F16K 1300

Patent

active

040650979

ABSTRACT:
An elongated gate-type valve is pivotally mounted within vacuum coating apparatus of the multiple-chamber, in-line type, and is operated to vacuum seal an access slot interconnecting vacuum chambers. An actuator for opening and closing the slot valve is connected through transversely spaced thrust links, the actuator ends of which have guide wheels, respectively, that are movable within restraining guide channels for confining the actuator ends to linear, vertical movement. An increasingly large closing and sealing force is applied to the valve, especially during final closure thereof, due to an increasing mechanical advantage of the actuator and thrust link arrangement for valve closing.

REFERENCES:
patent: 24369 (1859-06-01), Bramwell
patent: 167751 (1875-09-01), Earle
patent: 612627 (1898-10-01), Hirt
patent: 3334858 (1967-08-01), Hay

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