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| Number | Title | Issue Date |
| 7258128 | Post yard hydrant with controlled adjustable flow The present invention is a post yard hydrant with controlled adjustable flow. The post yard hydrant includes a valve housing located below ground level for connection to a water supply under pressure, a head portion with an integral discharge nozzle positioned above... | 08/21/2007 |
| 7228868 | Fire hydrant system The present invention relates to a hydrant system that is projected over the ground while being buried in the underground. The hydrant system comprises a sluice valve connected to a water-guide tube within a manhole M, the sluice valve having a first openings/shutti... | 06/12/2007 |
| 6899120 | Yard hydrant A yard hydrant has an elongated wet pipe with a plunger that seals against the inside of a well casing. Lifting a pivoting handle at the top of the wet pipe lowers the wet pipe which opens a normally closed supply valve. Pressurized water can then flow up the wet pi... | 05/31/2005 |
| 6178988 | Hydrant design A hydrant valve assembly including a spool member having at least one spool seal which is at times under extremely high pressure tending to cause the seal to be displaced from an associated recess, the spool member forming venting passages in the seal rec... | 01/30/2001 |
| 5289840 | Yard hydrant A yard hydrant includes a head section with a nozzle, a standpipe and valve housing in traditional hydrant relationship that is constructed and assembled into an integral unit which cannot be disassembled. An operating rod with valve means reciprocates in... | 03/01/1994 |
| 4372339 | Yard hydrant A yard hydrant includes an improved valve assembly connecting the hydrant standpipe at a point below the frost line to a source of water under pressure. A hollow and generally cylindrical housing of such assembly is provided with a bore concentrically red... | 02/08/1983 |
| 4096877 | Freezeproof sanitary water supply appliance A water supply control appliance adapted to be buried in soil beneath local frost level contains a chamber fitted with a piston which is spring-biased in opposition to inlet water pressure. Such pressure forces the piston to fully charged position at one ... | 06/27/1978 |
