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Class Information
Number: 137/138
Name: Fluid handling > Siphons > Periodic or accumulation responsive discharge > Release of trapped air > Through liquid trap seal
Description: Apparatus in which the trapped air releasing means comprises a liquid trap seal, which may be formed by suitable configuration of the discharge end of the siphon element.

Sub-classes under this class:

Class Number Class Name Patents
137/139 Auxiliary liquid trap seal 7

Patents under this class:

Patent Number Title Of Patent Date Issued
8136340 Lateral flow high voltage propellant isolator Mar. 20, 2012
8109075 Lateral flow high voltage propellant isolator Feb. 7, 2012
7836679 Lateral flow high voltage propellant isolator Nov. 23, 2010
6180307 Layered polymer particles, toner formed therefrom and methods for forming the same Jan. 30, 2001
4830040 Automatic swimming pool cover drainer May. 16, 1989
4625752 Flushing siphon Dec. 2, 1986
4586527 Gas-plug type valve May. 6, 1986
4480655 Liquid-plug-creating device Nov. 6, 1984
4254934 Hydraulic syphon with pneumatic reflux Mar. 10, 1981
3972966 Apparatus for producing pulsed liquid flow in a distillation column Aug. 3, 1976

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