Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/136
Name: Fluid handling > Siphons > Periodic or accumulation responsive discharge > Release of trapped air
Description: Apparatus in which the liquid accumulating in the siphon chamber traps air in the siphon element and means is provided to release such trapped air to initiate liquid flow through the siphon.

Sub-classes under this class:

Class Number Class Name Patents
137/137 Through float-operated vent 7
137/138 Through liquid trap seal 10

Patents under this class:

Patent Number Title Of Patent Date Issued
5921267 Water level control device Jul. 13, 1999
5113837 Air induction control device May. 19, 1992
5009261 Device for providing communication between water tanks of heat accumulation tank system Apr. 23, 1991
4887667 Device for providing communication between water tanks of heat accumulation tank system Dec. 19, 1989
4802897 Recovery of gases from non-viscous solvents Feb. 7, 1989
4619273 Device for diagnosing and monitoring urological diseases Oct. 28, 1986
4542762 Automatic liquid delivery apparatus Sep. 24, 1985
4526757 Pulsed flow vapor-liquid reactor Jul. 2, 1985

  Recently Added Patents
Mobile communication apparatus
Insulated container sleeve
Pharmaceutical treatment process using chitosan or derivative thereof
Device with a floating head having a heater element
Detecting patterns of abuse in a virtual environment
Packaging sleeve
Electrostatic charger and image forming apparatus
  Randomly Featured Patents
Connector with moving front wall
Pre-loaded actuator using piezoelectric element
System and process for automatically explaining probabilistic predictions
System and method for improving frequency response in a magneto-resistive preamplifier
Partially-operable driver circuit
Method of and apparatus for controlling supercharge pressure for a turbocharger
Fuel tank for vehicles with fuel movement calmina arrangement
Disk manufacturing apparatus
Trimmable monolithic capacitors
Manifold housing system