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Class Information
Number: 137/479
Name: Fluid handling > Line condition change responsive valves > Combustion engine induction type
Description: Apparatus comprising governor valves or induction controlled inlets associated with internal combustion engines, in which a valve responds to a pressure differential proportional to changes to an outlet at sub-atmospheric pressure, i.e., the induction manifold of the engine.

Sub-classes under this class:

Class Number Class Name Patents
137/484 Unbalanced pivoted valve (e.g., unbalanced butterfly type) 1
137/480 Valve in auxiliary inlet to induction line 20
137/481 With manual modifier 1
137/483 With separate reactor surface 2
137/482 With suction compensator 2

Patents under this class:

Patent Number Title Of Patent Date Issued
8517050 Pressure regulating device Aug. 27, 2013
6394128 Intake tract negative pressure relief valve for I.C. engine May. 28, 2002
4173204 Control valve of exhaust recirculation apparatus Nov. 6, 1979
4071044 Air monitoring valve for combustion engines Jan. 31, 1978

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