Abstract: A free-space power receiver includes layouts of photovoltaic cells selected to optimize power extraction even when a power beam moves or changes profile on the receiver. The receiver may also include a circuit board having apertures therein whereby light may reach the photovoltaic cells. The circuit board may include suitable wiring for connecting the photovoltaic cells to one another and to a load for extraction of power.

Abstract: An engine with rotating assembly is disclosed. The engine includes a block defining a cylinder bore; a crankshaft mounted for rotation in the block; a piston disposed in the cylinder bore; a connecting rod interconnecting the piston to the crankshaft; and a cylinder head coupled to the block having a combustion chamber aligned with the cylinder bore and having an intake opening and an exhaust opening communicating therewith; an intake port; an exhaust port; a rotatable intake valve barrel disposed between the intake opening and the intake port; and a rotatable exhaust valve barrel disposed between the exhaust opening and the exhaust port. A first electric motor is connected to the intake valve barrel and a second electric motor is connected to the exhaust valve barrel, the first electric motor rotates the intake valve barrel and second electric motor rotates the exhaust valve barrel independently of the intake valve barrel.