US PATENT SUBCLASS 123 / 55.2
.~.~ Cylinders opposite

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

52.1  DF  MULTIPLE CYLINDER {7}
54.1  DF  .~ Cylinders radiating {4}
55.2.~.~ Cylinders opposite {3}
55.3  DF  .~.~.~> Cam on rotary output shaft
55.4  DF  .~.~.~> Four-stroke cycle {1}
55.6  DF  .~.~.~> Two-stroke cycle {1}

DEFINITION

Classification: 123/55.2

Cylinders opposite:

(under subclass 54.1) Multiple cylinder engine wherein the first and second cylinder axes are spaced from each other 180 deg. about the crankshaft axis.