Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
System, apparatus and method for enabling/disabling display data channel access to enable/disable high-bandwidth digital content protection
Aperture stop
Electromagnetic bandgap structure and printed circuit board
Housing for gas flow indicator
Regenerative braking control to mitigate powertrain oscillation
Plants and seeds of hybrid corn variety CH979678
Display window with level of service graphical user interface
  Randomly Featured Patents
Radio transmitters and methods of operation
Foldable plastic product
Use of a composition of an ionic nature as a substrate reagent, a composition constituting a fluorination reagent and a method using same
Electrode system with rigid-flex circuit
New Guinea Impatiens plant named `GruNeu 21`
Pattern matching system utilizing discrete curve matching with a mapping operator
Reciprocating slat conveyors
Self-contained biological indicator for non traditional sterilization methods
Fluid dispensing valve
Overhead reduction for multi-link networking environments