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
Horizontal cable manager
Structure of circuit board and method for fabricating the same
Flat panel display device and stereoscopic display device
Image sensor pixels with junction gate photodiodes
Ni-, Co-, and Mn- multi-element doped positive electrode material for lithium battery and its preparation method
System and method for optimizing use of plug-in air conditioners and portable heaters
Electrode assembly with centrally wound separator member
  Randomly Featured Patents
Semiconductor memory device and its data reading method
Method of optimizing the performance envelope of a turbine engine
Water wheel for generating power
Sound reducing polymer interlayers
Wide-angle photographic lens system
Dental implant abutment screw lock
Multi-function pager charger
Removing apparatus for paper sheets, fold sections, paper duct, etc., in rotary press
Fluid ejection device and method
System and method for real time insertion into video with occlusion on areas containing multiple colors