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Class Information
Number: 405/83
Name: Hydraulic and earth engineering > Fluid control, treatment, or containment > Flow control > Fishway > Closed channel
Description: Method or apparatus wherein the fishway is in the form of a pipe or other enclosed waterway.










Patents under this class:

Patent Number Title Of Patent Date Issued
8550747 Fish passage apparatus with variable inlets and method Oct. 8, 2013
8550748 Parallel fish passage apparatuses with hydroelectric power generator and method Oct. 8, 2013
8550749 Fish passage apparatus with flow restriction and method Oct. 8, 2013
8282836 Water intake structure Oct. 9, 2012
8262317 Juvenile fish bypass system Sep. 11, 2012
8011854 Fish passage apparatus with hydroelectric power generator and method Sep. 6, 2011
6964541 Fish safe screened water diversion apparatus Nov. 15, 2005
6832578 Bio-hydraulic turbine testing system Dec. 21, 2004
6739802 Fish test circuit and method for evaluation of waterway barrier fish bypass systems May. 25, 2004
6588370 Labyrinth weir and pool fishway Jul. 8, 2003
6524028 Fish safe screened water diversion apparatus Feb. 25, 2003
6467997 System and method for diverting fish around a structure Oct. 22, 2002
6394699 Apparatus for reduced flow fish passage May. 28, 2002
6347908 Fish guidance system Feb. 19, 2002
6325570 Fishway system with turbine Dec. 4, 2001
6273639 Method and apparatus for facilitating migration of fish past dams and other barriers in waterways Aug. 14, 2001
5947640 Portable water conveyance assembly Sep. 7, 1999
5660499 Two-way fish siphon overpass Aug. 26, 1997
5263833 Fish guiding assembly and method utilizing same Nov. 23, 1993
5253954 Alternate intake pipe system to eliminate zebra mussel colonization Oct. 19, 1993
5161913 Method and apparatus for migratory fish passage to the sea Nov. 10, 1992
4929122 Fish protection system for dams May. 29, 1990
4740105 Fish diversion system Apr. 26, 1988
4629361 Integrated tubal by-pass fishway Dec. 16, 1986
4526494 Penstock fish diversion system Jul. 2, 1985
4488835 Penstock fish diversion system Dec. 18, 1984
4437431 Method and apparatus for diversion of downstream migrating anadromous fish Mar. 20, 1984
3938340 Fish holding chamber Feb. 17, 1976











 
 
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