Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Retrofitting a fire hydrant with a replacement hydrant body containing a secondary valve










Image Number 12 for United States Patent #7775231.

The present invention relates to methods and devices for retrofitting fire hydrants with additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include a replacement hydrant body having an enlarged diameter portion that can be installed to replace an existing hydrant body. The replacement hydrant body can include a secondary valve comprising a seat, biasing structure, and a restriction member to close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open.








 
 
  Recently Added Patents
Capacitor including registration feature for aligning an insulator layer
Administering incident pools for event and alert analysis
Helmet
Shower head for laboratories
Cooling device for the air conditioning of an examination area of a medical examination apparatus and medical examination apparatus comprising a cooling device
Delivery system for radiation therapy
Multiport passive device for sharing optical signals
  Randomly Featured Patents
Probe kit for identifying a base in a nucleic acid
Dog biscuit
Sliding roof for a vehicle
Apparatus and method for improving cellular communication by associating users on a mobile platform with a common platform identifier
Method of forming a paper web
LED backlighting system
Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system
C-nucleoside derivatives and their use in the detection of nucleic acids
Method for treating sludge from wastewater treatment
Surface casing stabilizer and hanger and method of employing the same