<p>The present invention relates to methods and devices for retrofitting fire hydrants with additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include a seat and elongated member for efficient and cost effective installation and cooperation with valves, which close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open.</p>
申请公布号
CA2644321(A1)
申请公布日期
2007.09.07
申请号
CA20072644321
申请日期
2007.03.01
申请人
DAVIDSON HYDRANT TECHNOLOGIES, INC.
发明人
ROSE, MATTHEW JESSE;WALDEN, DAVID MICHAEL;FERRARI, ANTHONY;DAVIDSON, THOMAS DEWEY, SR.