US PATENT SUBCLASS 123 / 60.1
.~ Locked annular 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}
60.1.~ Locked annular piston

DEFINITION

Classification: 123/60.1

Locked annular piston:

(under subclass 52.1) Multiple cylinder engine including a first piston of circular cross section and including a second piston that is hollow and concentric about the first piston, wherein the two pistons are secured to each other so that they move together.