Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 405/82
Name: Hydraulic and earth engineering > Fluid control, treatment, or containment > Flow control > Fishway > Elevator
Description: Method or apparatus wherein the fish are mechanically raised or lowered to carry them around the obstruction.

Patents under this class:

Patent Number Title Of Patent Date Issued
8262317 Juvenile fish bypass system Sep. 11, 2012
7670083 Inflatable weir fish passage systems and methods Mar. 2, 2010
7300572 Water screen Nov. 27, 2007
7249915 High-flow sediment-free fish ladder Jul. 31, 2007
7048850 Water screen May. 23, 2006
6905287 Water containment structure with fish ladder Jun. 14, 2005
6715959 Fish ladder for passing dams Apr. 6, 2004
6347908 Fish guidance system Feb. 19, 2002
6187184 Traveling water screen having improved basket Feb. 13, 2001
5540521 Inflatable cushion for culturing and movement of aquatic organisms Jul. 30, 1996
4904114 Fish conveying apparatus Feb. 27, 1990
4431340 Fish elevator and method of elevating fish Feb. 14, 1984
4415462 Self-cleaning screen Nov. 15, 1983
4260286 Integrated fish migration system Apr. 7, 1981
4199453 Apparatus for protecting aquatic life passing through a water filter Apr. 22, 1980

  Recently Added Patents
Hepatitis C virus inhibitors
Method and system for Bluetooth low power link layer connection setup
Signal processing apparatus and methods
RFID reader revocation checking using low power attached displays
Coordinated multi-point transmission in a cellular network
Process for producing polyols
  Randomly Featured Patents
Portable device for transmitting signal
Golf club
Transistor having a graded active layer and an SOI based capacitor
Covered container
Damping coefficient switching-type hydraulic damper
Radioactive catalyst and oxidation-reduction method and apparatus using same
Apparatus for sorting objects according to size
Extrusion for container with integral pallet
Rigid dwelling house, a swimming pool, and means to move the house atop the pool
Device for discarding trims formed during the cutting of paper logs