Resources Contact Us Home
Fire hydrant system

Image Number 12 for United States Patent #7228868.

The present invention relates to a hydrant system that is projected over the ground while being buried in the underground. The hydrant system comprises a sluice valve connected to a water-guide tube within a manhole M, the sluice valve having a first openings/shutting shaft disposed therein; a female cylinder having a drain valve that is opened when the sluice valve is locked and that is locked when the sluice valve is opened, and a bracket having a through-hole; a male cylinder having a piston for opening/shutting the bottom of the male cylinder as a piston rod is rotated in the forward or reverse direction; a rod for limiting a projection range of the male cylinder protruded against the female cylinder; a manhole cover having a sub hole through which the male cylinder passes; a second opening/shutting shaft for rotating the first opening/shutting shaft; and a universal joint, which connects the first opening/shutting and the second opening/shutting shaft.

  Recently Added Patents
Secure service for enabling communication for calling party when communication service for called party is suspended
Satellite mounting poles
Soybean EF1A promoter and its use in constitutive expression of transgenic genes in plants
Polypeptides and immunizing compositions containing gram positive polypeptides and methods of use
Techniques for accessing a parallel database system via external programs using vertical and/or horizontal partitioning
Systems and methods for flow mirroring with network-scoped connection-oriented sink
Digital broadcasting system and method of processing data
  Randomly Featured Patents
Polyolefin stabilization
Electrically conductive paste, electronic circuit component and method for producing same
Method of recovering energy from liquids in deep cavities
Diving mask
Multiple beam projection lighting system
High-carbon steel wire rod with superior drawability and method for production thereof
Ink-jet recording apparatus
Methods of producing hydrocarbons for substantially constant composition gas generation
Roll stand
Apparatus and process for handling circular articles