Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Wireless control kit for camera
Compositions and methods for producing isoprene
Programming method of non-volatile memory device
Data transfer operation completion detection circuit and semiconductor memory device provided therewith
Voltage regulator with improved voltage regulator response and reduced voltage drop
Method and apparatus for managing communication services for user endpoint devices
Modulators of cystic fibrosis transmembrane conductance regulator
  Randomly Featured Patents
Addition polymers of polycycloolefins containing silyl functional groups
Tracing stencil tablet
Negatively charged toner for use in electrostatography
Quaternary trifluoromethylcyclohexane derivatives for liquid crystals
Output conductance correction circuit for high compliance short-channel MOS switched current mirror
Fiber optic liquid sensing system
Modulation-doped halo in quantum well field-effect transistors, apparatus made therewith, and methods of using same
Method of making an artistic medium
Method of water treatment
Infusion belt