Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/299
Name: Fluid handling > Hydrant type > With valve at outlet
Description: Apparatus which includes one or more valves at outlets from the riser, either in the riser or in a discharge spout, and provided in addition to the main or foot valve of the riser.










Patents under this class:

Patent Number Title Of Patent Date Issued
8443834 Nozzle check valve May. 21, 2013
8302623 Anti-backflow insert for a fire hydrant outlet Nov. 6, 2012
8276608 Device for securing the valves of fire posts using the control tube Oct. 2, 2012
7775231 Retrofitting a fire hydrant with a replacement hydrant body containing a secondary valve Aug. 17, 2010
7766027 Vented steamer port cap assembly Aug. 3, 2010
7575017 Wet barrel fire hydrant system with second valve Aug. 18, 2009
7428910 Breathable fire hydrant rod Sep. 30, 2008
7240688 Retrofitting a fire hydrant with secondary valve Jul. 10, 2007
7174911 Fire hydrant with second valve Feb. 13, 2007
7055544 Fire hydrant with a second valve Jun. 6, 2006
6948512 Flushing attachment for hydrant Sep. 27, 2005
6910495 Backflow prevention system Jun. 28, 2005
6868860 Fire hydrant with second valve Mar. 22, 2005
6820635 Flushing attachment for hydrant Nov. 23, 2004
4651772 Flow retarding valve for fire hydrants Mar. 24, 1987
4393891 Device for temporarily rinsing a water cock countersunk in the ground Jul. 19, 1983
3939861 Fire hydrant Feb. 24, 1976











 
 
  Recently Added Patents
Methods of reverse link power control
LED package chip classification system
Transporting business intelligence objects between business intelligence systems
Controlling access to resources on a network
Pelvic registration device for medical navigation
Method and system for filtering home-network content
Switched capacitor hold-up scheme for constant boost output voltage
  Randomly Featured Patents
Treatment/purification of lactam media of reaction
LNG receiving terminal that primarily uses compensated salt cavern storage and method of use
Capacitance multiplier circuit
Hydraulic implement regeneration system
Packet protection method and transmission device in ring network, and program therefor
Maximized sound pickup switching apparatus for a string instrument having a plurality of sound pickups
Hand assisted laparoscopic seal assembly with a ratcheting mechanism
Herbal hair treatments and method of making the same
Nail with spreadable legs
Server device, mobile terminal and positioning mode selecting method