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| Number | Title | Issue Date |
| 7766027 | Vented steamer port cap assembly The present invention relates generally to methods and devices for providing a fire hydrant with a vented steamer port cap assembly to allow air and water to pass through an upper area of a fire hydrant. Various embodiments include hydrants with a vented steamer por... | 08/03/2010 |
| 7575017 | Wet barrel fire hydrant system with second valve Wet barrel fire hydrants which feature 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 valves which close off portio... | 08/18/2009 |
| 7428910 | Breathable fire hydrant rod The present invention relates to methods and devices for providing a fire hydrant actuator rod with additional structure for allowing air to reach the area of a fire hydrant below a secondary valve. Various embodiments include an actuator rod with openings and hollo... | 09/30/2008 |
| 7240688 | Retrofitting a fire hydrant with secondary valve 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... | 07/10/2007 |
| 7174911 | Fire hydrant with second valve Fire hydrants which feature 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 valves which close off portions of the h... | 02/13/2007 |
| 7055544 | Fire hydrant with a second valve Fire hydrants which feature 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 valves which close off portions of the h... | 06/06/2006 |
| 6868860 | Fire hydrant with second valve Fire hydrants which feature 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 valves which close off portions of the h... | 03/22/2005 |
