Resources Contact Us Home
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
Glow in the dark swim goggle frame and band
System and method for burst separation and extended interleaving length
Method of manufacturing semiconductor devices using ion implantation
Additives for oil recovery from reservoirs
Signal processing apparatus, display apparatus having the same, and signal processing method
Glass or glass-ceramic pane reflecting infrared radiation
  Randomly Featured Patents
Vacuum cleaner combination latch and electrical contact arrangement
Pet collar with retractable leash
Superior-and-inferior-limb blood-pressure index measuring apparatus
Cosmetic powder pencil or powder chalk
Composition, method and apparatus for safe disposal of oil contaminated filter media
Timepiece having a multipolar rotor
Article comprising a silicone pressure-sensitive adhesive and a releasable anti-stick layer and process of using same
Photothermographic material
Biocompatible polyurethanes by treatment with polyoxazoline block copolymers
Trolley intended for a medical apparatus and comprising wheels provided with a cable pusher