US PATENT SUBCLASS 123 / 58.5
.~.~.~ Step piston

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}
58.1  DF  .~ Cylinders in-line {10}
58.4  DF  .~.~ Lengthwise charging {1}
58.5.~.~.~ Step piston

DEFINITION

Classification: 123/58.5

Step piston:

(under subclass 58.4) Multiple cylinder engine including at least one piston configured with at least two different cross sections along the piston's length, the configured piston is received in a cylinder with at least two different diameter bores.