Geared hand wheel for butterfly valves

Details Geared hand wheel for butterfly valves Geared hand wheel for butterfly valves

1976-08-23

1978-06-06

Cohan, Alan

Valves and valve actuation

Mechanical movement actuator

Gear

2512495, 251286, 251288, 74437, 74802, F16k 3153

Patent

active

040931803

ABSTRACT:
The ability to control butterfly valves is greatly enhanced with a geared hand wheel having concentrically contained therein a pair of flat spur gears with at least one tooth difference and a pinion gear meshing with both of these gears with the pinion carried by the hand wheel in a planetary manner about these gears whereby a mechanical advantage is achieved as the spur gears are caused to rotate relative to one another by rotation of the hand wheel to control the valve shaft of the butterfly valve.

REFERENCES:
patent: 1499763 (1924-07-01), Davis
patent: 1788602 (1931-01-01), Sutton et al.
patent: 1818555 (1931-08-01), Helland
patent: 1851147 (1932-03-01), Banker
patent: 2025244 (1935-12-01), Morehead et al.
patent: 2231784 (1941-02-01), Von Thungen
patent: 2312376 (1943-03-01), Andrew
patent: 2402043 (1946-06-01), Hays
patent: 2438061 (1948-03-01), Lear
patent: 2722851 (1955-11-01), Steiner
patent: 2932992 (1960-04-01), Larsh
patent: 3081648 (1963-03-01), Duer
patent: 3143899 (1964-08-01), York
patent: 3401580 (1968-09-01), Sigg
patent: 3448828 (1969-06-01), Goldberg
patent: 3756095 (1973-09-01), McCoy, Jr. et al.

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