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Class Information
Number: 137/128
Name: Fluid handling > Siphons > Plural > Main siphon with auxiliary starting, stopping or resetting siphon
Description: Apparatus having a main siphon through which the major portion of the fluid is discharged and an auxiliary siphon which operates to start or stop fluid flow through the main siphon, or, after discharge of the main siphon, restores some or all of the main siphon operating means to a position permitting a subsequent discharge.

Sub-classes under this class:

Class Number Class Name Patents
137/129 Sinking or bucket-type float operated main siphon, float emptying auxiliary siphon 3

Patents under this class:

Patent Number Title Of Patent Date Issued
8544492 Vacuum activated power tower Oct. 1, 2013
8066027 Vacuum activated closed loop system Nov. 29, 2011
7864062 Apparatus and method for detecting a change in a specific gravity of a fluid Jan. 4, 2011
6178984 Self-priming siphon, in particular for irrigation Jan. 30, 2001
5970999 Hydraulic vacuum pump Oct. 26, 1999
5533935 Toy motion simulator Jul. 9, 1996
5274855 Siphon flushing mechanism and method Jan. 4, 1994
4406300 Roof siphon drain Sep. 27, 1983
4171709 Device for siphoning water from a ponding area on a flat roof Oct. 23, 1979
4124035 Self priming siphon Nov. 7, 1978
4035299 Method of initiating a fluid flow within a siphon tube between an aquarium and its associated filter tank Jul. 12, 1977

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