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
Prioritizing application data for transmission in a wireless user device
Traffic signal mapping and detection
Image forming apparatus and image forming method
Input system including position-detecting device
Sensor apparatus and information processing apparatus
Switch redundancy in systems with dual-star backplanes
Taste receptors of the T1R family from domestic cat
  Randomly Featured Patents
1,2,4-Triazole derivatives
Modular liquid chromatography column apparatus
EL power unit
Amino-terminal modified parathyroid hormone (PTH) analogs
Ultrasonic diagnostic apparatus
Heat sink for integrated-circuit chip carrier
Polarization isolation and zero time-sidelobe pulse compression through group-complementary coding
Method and apparatus for complex in-phase/quadrature polyphase nonlinear equalization
Removable boat trailer light
Relator assembly