Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/305
Name: Fluid handling > Hydrant type > Protection against freezing > Stop and waste > Separate relatively movable valves with single actuator > Unidirectional abutting connection between main valve or actuator and waste valve
Description: Apparatus in which the drain valve is operated in only one direction by abutment of a part thereof with the control valve or a projection thereon or on the valve actuator, operation in the other direction being by weight or spring bias.










Patents under this class:

Patent Number Title Of Patent Date Issued
7438082 Frost-resistant stand valve Oct. 21, 2008
5803110 Fire hydrant assembly Sep. 8, 1998
4790342 Fire hydrant valve actuator Dec. 13, 1988
4112966 Ejector purge hydrant Sep. 12, 1978











 
 
  Recently Added Patents
Vibration disturbance estimation and control
Asset control in location tracking system
Accelerator for a read-channel design and simulation tool
Message processing method and apparatus based on the SIP protocol and an IP communication system
Bioelectric battery for implantable device applications
Luggage cart
Air scent dispenser
  Randomly Featured Patents
Inkjet head
Cyclic P3 tripeptide hepatitis C serine protease inhibitors
Using network transport tunnels to provide service-based data transport
Mammalian cytokine-like factor-7
Liquid container having a remotely cleavable seal
Vehicle tire pressure sensing device
Communication system, node, control server, communication method and program
Apparatus for manufacturing corrugated plywood composites
Absorbent article with liquid transfer layer
Monoclonal antibodies, hybridomas, improved method for determining the protein PTX3 and kit for said determination