US PATENT SUBCLASS 123 / 406.73
.~.~ Plural diaphragms or actuators

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

406.11  DF  SPARK IGNITION TIMING CONTROL {5}
406.67  DF  .~ Vacuum timing control {5}
406.73.~.~ Plural diaphragms or actuators

DEFINITION

Classification: 123/406.73

Plural diaphragms or actuators:

(under subclass 406.67) Subject matter wherein the regulating means includes either (a) more than one thin flexible wall which separates a chamber for the gas at less than atmospheric pressure or (b) more than one actuation device.