Operating wrench for tamperproof hydrants

Details Operating wrench for tamperproof hydrants Operating wrench for tamperproof hydrants

1985-11-15

1987-09-01

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Pivoted outer jaw

81111, 8117785, 811851, 81186, 1373825, 137296, B25B 1328

Patent

active

046900195

ABSTRACT:
A tamperproof fire hydrant which can only be operated with use of a special operating means or tool thus preventing the opening of the hydrant by unauthorized persons for unauthorized use. The hydrant is provided with the usual polygonal end portion of the rotatable operating nut extending out of the top closure member. A dome shaped cap is mounted on the polygonal end portion of the operating nut for free rotation relative thereto, the dome shaped cap having a skirt with the lower edge thereof spaced from the tubular hold down nut or top closure member of the fire hydrant to provide a limited access space to the polygonal end portion for reception of the special operating means. The special operating means is also capable of being used as a tool to remove the nozzle cap off of the usual nozzle and to install the hose coupling on the nozzle.

REFERENCES:
patent: 1068771 (1913-07-01), Holmes
patent: 2655064 (1953-10-01), Simon et al.
patent: 4554944 (1985-11-01), Daghe et al.

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