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Class Information
Number: 137/147
Name: Fluid handling > Siphons > With flow starting, stopping or maintaining means > Pump or liquid displacement device for flow passage
Description: Apparatus in which the means comprises a pump mounted in or on the siphon.

Sub-classes under this class:

Class Number Class Name Patents
137/150 Collapsible bulb 15
137/148 Piston 11

Patents under this class:

Patent Number Title Of Patent Date Issued
8709357 Micro-fluidic device Apr. 29, 2014
8662117 Secure weather containment system--enviro tank Mar. 4, 2014
8544492 Vacuum activated power tower Oct. 1, 2013
8226123 Fuel tank Jul. 24, 2012
8132534 Overflow device for water tank Mar. 13, 2012
8066027 Vacuum activated closed loop system Nov. 29, 2011
8029022 Fuel tank Oct. 4, 2011
6926026 Siphon initiating device Aug. 9, 2005
6806952 Inspection and retrieval device Oct. 19, 2004
6607005 Fuel tank Aug. 19, 2003
6533951 Method of manufacturing fluid pump Mar. 18, 2003
6412528 Siphoning pump apparatus Jul. 2, 2002
6012481 Constant-level fluid supplier Jan. 11, 2000
5979485 Fuel tank level equalizer system Nov. 9, 1999
5970999 Hydraulic vacuum pump Oct. 26, 1999
5403521 Blow system and a method of use therefor in controlling the quality of recycle cooling water in a cooling tower Apr. 4, 1995
5293894 Automatic prime and flush siphon condensate pump system Mar. 15, 1994
4997003 Liquid waste evacuation and transfer system Mar. 5, 1991
4951699 Fuel transfer system with aspirator Aug. 28, 1990
4834132 Fuel transfer apparatus May. 30, 1989
4552515 Handy tube pump Nov. 12, 1985
4381645 Power unit for dam May. 3, 1983
4364228 Hydraulic turbine system with siphon action Dec. 21, 1982
4291836 Intermittent water-supply system Sep. 29, 1981
4290443 Flexible tube liquid transfer device Sep. 22, 1981
4248258 Flat roof auxiliary drain system Feb. 3, 1981
4103495 Flow control device for an irrigation ditch Aug. 1, 1978
3973751 Siphon with pressure priming and pneumatic reflux Aug. 10, 1976

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