Rotary valve

Details Rotary valve Rotary valve

1975-05-15

1977-05-24

Schwadron, Martin P.

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

744248B, 251265, 251269, 251292, F16K 3700

Patent

active

040248909

ABSTRACT:
Rotary valve comprising a rotatable stem having a valve disk fixed thereto and disposed within a valve case, a slidable tube and a rotatable tubular member each positioned coaxially with the stem and connected to the valve case, first screw-thread means for holding the stem and the slidable tube in screw-thread engagement with each other, and second screw-thread means for holding the slidable tube and the tubular member in screw-thread engagement with each other, the first screw-thread means having a larger lead angle than the second screw-thread means, so that the rotation of the tubular member rotates the stem of the valve disk.

REFERENCES:
patent: 803565 (1905-11-01), Dina
patent: 1244630 (1917-10-01), Mitchell
patent: 1502734 (1924-07-01), Martin
patent: 2373268 (1945-04-01), Shelly
patent: 2538436 (1951-01-01), Weinberg
patent: 2633143 (1953-03-01), Simon
patent: 2791129 (1957-05-01), Russell
patent: 3064674 (1962-11-01), Carfagna
patent: 3184214 (1965-05-01), King
patent: 3348567 (1967-10-01), Volpin
patent: 3373969 (1968-03-01), Teitt
patent: 3726151 (1973-04-01), Lemor

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