Patent ID: 7404381
Filing Date: 2008-07-29
Classification: F01B,F01C,F02B,Y02T

Abstract:
1. An engine comprising: a first end wall portion; a second end wall portion spaced apart from the first end wall portion to at least partially define a pressure chamber therebetween; a first movable member operably disposed between the first and second end wall portions, wherein the first movable member has a first distal edge portion and a first cylindrical surface; and a second movable member operably disposed between the first and second end wall portions, wherein the second movable member has a second distal edge portion and a second cylindrical surface, wherein the first distal edge portion of the first movable member is configured to slide across the second cylindrical surface of the second moveable member, and the second distal edge portion of the second movable member is configured to slide across the first cylindrical surface of the first movable member, as the first movable member pivots about a first pivot axis and the second movable member pivots about a second pivot axis, and wherein the first and second pivot axes are fixed relative to the first and second end wall portions.