Resources Contact Us Home
Spillway for discharging extraordinary floods at dams having at least two flood discharge structures

Image Number 8 for United States Patent #5195846.

For the purpose of providing a more economical alternative to conventional control gates for the quasi-permanent closure of all or part of the length of the overflow spillway of a dam except when discharging extraordinary floods, the invention consists of installing on the sill of the spillway a water level raising means comprising at least one heavy element, held by gravity on the sill, the water level raising means or its element being designed to overturn at a predetermined head corresponding to a headwater level not higher than the predetermined maximum water level in order to discharge extraordinary floods, smaller floods being discharged by a separate flood discharge structure.

  Recently Added Patents
Multiple carrier compression scheme
Flat display panel and method for forming the same
Automotive lighting system
Mechanical and moisture protection apparatus for electronic devices
Battery loading and unloading mechanism
Memory system with data line switching scheme
Printing apparatus having extendable functionality and method thereof
  Randomly Featured Patents
System and method for translating include files
Protective circuit for pulse width modulated signal amplifier
Steering control device for radio-controlled model helicopter
Sighting apparatus for use with a golf putter
Emergency locating transmitter and receiver system
Geothermal petroleum refining
Selective error correction for ad hoc networks having multiple communication modes
Suspension preheater
Floor protective device for motorcycles and the like
Apparatus and method of playing a board game simulating a race