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
Package for product
System and method of improving audio signals for the hearing impaired
Method and system for filtering noises in an image scanned by charged particles
Visualization of information associated with applications in user interfaces
Organic electroluminescence device
Orthogonal tunable antenna array for wireless communication devices
Circuitry for measuring and compensating phase and amplitude differences in NDT/NDI operation
  Randomly Featured Patents
Mechanism for moving a heavy object
Antistaling agent for bakery products
Substrate preparation using stabilized fluid solutions and methods for making stable fluid solutions
Wafer transfer apparatus
Monitoring drug packaging in clinical trial process
Process for hydrogenation of esters into alcohols
Soft thermoplastic elastomer composition
Helical split ring french fry and apparatus for making the same
Selective slicing equalizer
Variable geometry rim surface acetabular shell liner