Locking device for a ball valve

Details Locking device for a ball valve Locking device for a ball valve

1978-07-24

1980-06-17

Schwadron, Martin P.

Valves and valve actuation

With means for blocking or disabling actuator

Attachments

251 95, 251113, 137385, F16K 3500

Patent

active

042080339

ABSTRACT:
A locking device has a locking plate mounted on a ball valve housing and a hasp slidably mounted on the locking plate for movement into a position in which the hasp can engage the ball valve handle to prevent movement thereof irrespective of whether the handle is in the ball valve open position or the ball valve closed position. When the hasp is disposed to engage the handle, an opening in the hasp is aligned with an opening in the locking plate to receive a padlock for locking the hasp in the handle engaging position so that the handle cannot be turned to move the ball valve.

REFERENCES:
patent: 867571 (1907-10-01), Claus
patent: 1014203 (1912-01-01), Bees
patent: 1145278 (1915-07-01), Taylor
patent: 1236815 (1917-08-01), Behan
patent: 1444780 (1923-02-01), Davis
patent: 2035747 (1936-03-01), Harris
patent: 2161509 (1939-06-01), Farber
patent: 3648970 (1972-03-01), Hartmann et al.
patent: 3865130 (1975-02-01), Mullis
patent: 3960168 (1976-06-01), Plympton
patent: 3976095 (1976-08-01), Koch et al.
patent: 4093178 (1978-06-01), Hughes
patent: 4126023 (1978-11-01), Smith et al.

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