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Class Information
Number: 137/281
Name: Fluid handling > Hydrant type > Expansible chamber operated by valve actuator for draining riser
Description: Apparatus including an expansible chamber near the bottom of the riser and operated by movement of the riser and/or valve actuator to evacuate water from the riser as the valve is closed or receive the drain or waste after the valve is closed, and to refill the riser as or before the valve is opened.










Patents under this class:

Patent Number Title Of Patent Date Issued
8413675 Yard hydrant made easy Apr. 9, 2013
7856333 Method for commissioning actuators Dec. 21, 2010
7234479 Sanitary yard hydrant Jun. 26, 2007
7059337 Fluid hydrant Jun. 13, 2006
6899120 Yard hydrant May. 31, 2005
6427716 Positive displacement hydrant with water discharge path from reservoir Aug. 6, 2002
6085776 Water supply system Jul. 11, 2000
6047723 Positive displacement yard hydrant Apr. 11, 2000
6003780 Freezeproof valve assembly for a drinking fountain Dec. 21, 1999
5553637 Frost-free water supply Sep. 10, 1996
5261441 Yard hydrant Nov. 16, 1993
4653522 Ground hydrant and method for operating same Mar. 31, 1987
4653521 Freezeless ground hydrant and method for operating same Mar. 31, 1987
4282895 Freeze-proof, pollution free valve Aug. 11, 1981
4282895 Freeze-proof, pollution free valve Aug. 11, 1981
4096877 Freezeproof sanitary water supply appliance Jun. 27, 1978











 
 
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