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
Comparison of visual information
Viruses lacking epithelial cell receptor entry
Method and system for phase-sensitive magnetic resonance imaging
Motor device and method of manufacturing the same
Methods, systems, and physical computer storage media for processing a plurality of input/output request jobs
Apoptosis inductor extracted from potato, potato foodstuff containing the inductor, and processed product thereof
Level shifter and method of using the same
  Randomly Featured Patents
Collapsible container with durable bottom shell
Method for shrinking critical dimension of semiconductor devices
Deep fryer
Method and device for the separation of a fluid in a well
Air-fuel ratio feedback control system including at least downstream-side air fuel ratio sensor
Taxonomy-based object classification
Device for displaying 3D images
High frequency heating apparatus
Solution based enhancements of fuel cell components and other electrochemical systems and devices
Connectors for towing cable and the like