Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 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 |
| 7077163 | Device for controlling the flow of liquid or gaseous media A device controls the flow of liquid or gaseous media, especially a liquid heating or cooling medium, in a line system with a first channel that contains a valve, especially a shut-off valve, and is provided with connections on both ends thereof. Two other channels ... | 07/18/2006 |
| 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 |
| 6948512 | Flushing attachment for hydrant A device and method for automatically flushing hydrants. The device is installed externally to an existing hydrant. The device comprises a nipple having an internally threaded collar for attaching the device to a hydrant outlet, a valve, a control for automatically ... | 09/27/2005 |
| 6910495 | Backflow prevention system A backflow prevention system that helps prevent contamination of potable water distribution systems from backflow at fire hydrant connections. ... | 06/28/2005 |
| 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 |
| 6820635 | Flushing attachment for hydrant A device and method for automatically flushing hydrants. The device is installed externally to an existing hydrant. The device comprises a nipple having an internally threaded collar for attaching the device to a hydrant outlet, a valve, a control for automatically ... | 11/23/2004 |
| 4651772 | Flow retarding valve for fire hydrants A delay valve is attached to a fire hydrant and interposed between the hydrant and the hose and restricts the otherwise high flow and high pressure of the hydrant to a small fraction of the normal flow and pressure until the hose is filled up, at which po... | 03/24/1987 |
| 4393891 | Device for temporarily rinsing a water cock countersunk in the ground The present invention relates to a device for periodically rinsing a water cock countersunk in the ground. A drainpipe is connected between the water cock and a closing member of an extension piece. The drainpipe includes a valve body which is opened by t... | 07/19/1983 |
| 3939861 | Fire hydrant A fire hydrant designed to prevent the unauthorized use of an outlet nozzle which is located on the above ground barrel portion of the stand pipe. The hydrant includes a valve means located within the barrel portion and provided with a valve member which ... | 02/24/1976 |
