US PATENT SUBCLASS 123 / 52.3
.~.~ Four-stroke cycle

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


123 /   HD   INTERNAL-COMBUSTION ENGINES

52.1  DF  MULTIPLE CYLINDER {7}
52.2  DF  .~ Simultaneous compression, distinct pistons, restricted communication to a single combustion chamber {2}
52.3.~.~ Four-stroke cycle {1}
52.4  DF  .~.~.~> Multiple crankshafts

DEFINITION

Classification: 123/52.3

Four-stroke cycle:

(under subclass 52.2) Multiple cylinder engine wherein the pistons in the working cylinders operate on a four-stroke cycle.