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Class Information
Number: 137/123
Name: Fluid handling > Siphons
Description: Apparatus having a flow passage comprising two branches or legs of unequal effective length by which a liquid can be transferred to a lower level over an intermediate elevation by the pressure of the atmosphere in forcing the liquid up the shorter branch or leg immersed in it while the excess of weight of the liquid in the longer branch (when once filled) causes a continuous flow.










Sub-classes under this class:

Class Number Class Name Patents
137/153 Elements 9
137/132 Periodic or accumulation responsive discharge 48
137/124 Plural 21
137/130 With discharge-controlling receiver 4
137/142 With flow starting, stopping or maintaining means 56
137/152 With means for mounting and/or positioning relative to siphon chamber 27
137/141 With recorder, register, signal, indicator or inspection window 4
137/140 With strainer, filter, separator or sediment trap 41


Patents under this class:

Patent Number Title Of Patent Date Issued
6412528 Siphoning pump apparatus Jul. 2, 2002
6091336 Moisture detection apparatus Jul. 18, 2000
5624573 Apparatus for the disinfection of a flowing liquid medium and a plant for the treatment of clarified sewage Apr. 29, 1997
5152026 Cooling tower cleaning device Oct. 6, 1992
4797027 Automatic level-regulating sluice Jan. 10, 1989
4619273 Device for diagnosing and monitoring urological diseases Oct. 28, 1986
4595474 Electroplating solution recovery system Jun. 17, 1986
4540014 Hydraulic memory device Sep. 10, 1985
4479274 Swimming pool siphon Oct. 30, 1984
4304252 Flush mounted sea valve Dec. 8, 1981
4182123 Hydraulic power plant Jan. 8, 1980
4180976 Siphon motor Jan. 1, 1980
4117676 Incorporable hydromotive assembly Oct. 3, 1978
4094022 Apparatus for the removal of water from a swimming pool duct Jun. 13, 1978
3990466 Stop and waste valve construction Nov. 9, 1976











 
 
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