US PATENT SUBCLASS 123 / 303
.~.~ Having inlet uncovered by working piston

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

294  DF  COMBUSTION CHAMBER MEANS HAVING FUEL INJECTION ONLY {9}
302  DF  .~ Air entering combustion chamber through plural inlets {1}
303.~.~ Having inlet uncovered by working piston

DEFINITION

Classification: 123/303

Having inlet uncovered by working piston:

(under subclass 302) Subject matter wherein at least one of the inlet ports is valved by a part of the engine piston during some portion of its working stroke.