Patent ID: 6397954
Filing Date: 2002-06-04
Classification: B25F,F01C

Abstract:
A combination of a seal member and a cylinder for a pneumatic tool comprising:a cylinder being a ring-shaped member and a rotary piston rotatably engaged with an inside of said cylinder, an inlet and an outlet radially defined through said cylinder, two first ribs respectively extending radially outward from said cylinder and said first inlet located between said two first ribs, two second ribs respectively extending radially outward from said cylinder and said outlet inlet located between said two second ribs, and a seal member mounted to an outside of said cylinder, a first hole and a second hole respectively defined through said seal member, a first flange extending radially outward from said seal member and said first hole enclosed by said first flange, a second flange extending radially outward from said seal member and said second hole enclosed by said second flange, said first inlet communicating with said first hole and said second inlet communicating with said second hole, said first ribs engaged with and enclosed by said first flange, said second ribs engaged with and enclosed by said second flange.