US PATENT SUBCLASS 123 / 58.1
.~ Cylinders in-line

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

52.1  DF  MULTIPLE CYLINDER {7}
58.1.~ Cylinders in-line {10}
58.2  DF  .~.~> Locked pistons {1}
58.4  DF  .~.~> Lengthwise charging {1}
58.6  DF  .~.~> Step piston
58.7  DF  .~.~> Cylinder supercharged by pressure pulse of released exhaust gases
58.8  DF  .~.~> Exhaust to next cylinder ready to fire
58.9  DF  .~.~> Oscillating or reciprocating, nonpoppet valve
59.1  DF  .~.~> Rotary valve {3}
59.5  DF  .~.~> Plural carburetors
59.6  DF  .~.~> Multiple crankshafts
59.7  DF  .~.~> Two-stroke cycle

DEFINITION

Classification: 123/58.1

Cylinders in-line:

(under subclass 52.1) Multiple cylinder engine including a crankshaft that turns about an axis in the same plane with the axis of first and second cylinders, the pistons of which are drivingly connected to the crankshaft.