Abstract: A game board or display board wherein in the disclosed perferred game board embodiment an eight by eight array of individually rotatable blocks, each having a plurality of exterior surfaces of different colors, are supported on eight longitudinal shafts. Each block is separated from its next adjacent block by a spacer which surrounds two longitudinal shafts. Spring biasing is used to create an axial force acting longitudinally along each shaft to frictionally grip each block and retain it with its original surface showing, or another selected face which has been turned up by finger pressure by a player. Reset bars are provided to relieve the axial force, thereby allowing each block to rotate under the action of a weighted lobe and to return to its starting position to begin a new game.

Abstract: Air breathing gas turbine engine design concepts, and methods and apparatus for providing variable engine cycles are disclosed. The preferred engine embodiments involve two flow control valve systems for internal management of air, each of which have the capacity to cross-over or invert adjacent annular flow patterns, and at least one of which is capable of switching from inverted to straight through flow.

Abstract: Air breathing gas turbine engine design concepts, and methods and apparatus for providing variable engine cycles are disclosed. The preferred engine embodiments involve two flow control valve systems for internal management of air, each of which have the capacity to cross-over or invert adjacent annular flow patterns, and at least one of which is capable of switching from inverted to straight through flow.