Patent ID: 7770546
Filing Date: 2010-08-10
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 wall portion operably disposed between the first and second end wall portions, the first movable wall portion having a first distal edge portion spaced apart from a first pivot axis; and a second movable wall portion operably disposed between the first and second end wall portions adjacent to the first movable wall portion, the second movable wall portion having a second distal edge portion spaced apart from a second pivot axis, wherein the first distal edge portion of the first movable wall portion is configured to slide across a surface of the second movable wall portion as the first movable wall portion pivots back and forth about the first pivot axis and the second movable wall portion pivots back and forth about the second pivot axis.