Patent ID: 7040342
Filing Date: 2006-05-09
Classification: E03B,Y10T

Abstract:
1. A fire hydrant security arrangement, for securing a fire hydrant having an operating nut of a surface configuration selected from plurality of configurations, comprising: a center post having a first portion with a circular outer surface of a first diameter and having a circular groove therein, the center post having a second portion configured as a security operating nut; a non-circular recess within the center post and an axial hole extending through the second portion and into the non-circular recess; an insert having an outer surface configured to complement the non-circular recess within the center post and an inner surface configured to receive and complement the selected surface configuration of the operating nut on the fire hydrant; a bolt for passage through the axial hole in the center post and the non-circular recess within the center post for fastening to the operating nut to fix the center post to the operating nut in a non-rotational relationship; a protective housing having a circular inner surface complementing the circular outer surface of the center post and fitting thereover to shield the center post from unauthorized attempts to operate the fire hydrant; a threaded bore extending through the housing and aligned with the circular groove in the center post; a locking plug threaded through the threaded bore through the housing and having a portion received in the circular groove, the locking plug having a security feature of a shape selected to be coupled with a complementary shape on a security wrench, whereby only a person having the security wrench can remove the plug without extreme difficulty.