Fire hydrant closures

Details Fire hydrant closures Fire hydrant closures

1990-07-05

1991-12-17

Walton, George L.

Fluid handling

Hydrant type

With casing

70175, 70231, 70232, 811761, 137377, 137800, 192 84PM, 220724, 220284, 220293, 251 65, 251291, 403 1, 403DIG1, F16K 3108, F16K 3516

Patent

active

050727508

ABSTRACT:
Improvements relating to fire hydrant closures are disclosed in which a cap-shaped cover for the outflow port from a fire hydrant, and a tool for locking and unlocking the cap on the hydrant, is provided. The cap includes a septum-like strong plate which is freely rotatable with the cap, but which is fixed against axial movement relative to the cap. Such septum-like plate, including means for mating engagement with corresponding means at the outflow spigot. The plate further includes means constructed to become engaged by the tool; the tool having a grip portion and a mating portion with a corresponding portion provided on the cap.

REFERENCES:
patent: 3840041 (1974-10-01), McMurray
patent: 3916939 (1975-11-01), Gillard
patent: 4182361 (1980-01-01), Oakey
patent: 4390038 (1983-06-01), Salvato
patent: 4526193 (1985-07-01), Drach
patent: 4602654 (1986-07-01), Stehling et al.
patent: 4620428 (1986-11-01), Kopesky
patent: 4716922 (1988-01-01), Camp

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