Abstract: A light emitting device has a cathode-ray tube and power supply. The cathode-ray tube in an embodiment is optimized for emitting a broad electron beam, in one variation a dome-shaped diffusing grid is used to spread the beam. In another embodiment, the device has a base adapted for attachment to a standard lighting fixture.

Abstract: A piston mechanism for gas driven engines, fluid motors, pumps and the like that has a piston in a chamber that is moveable in the chamber in a reciprocating action and a rotating shaft that is driven by or drives the piston, wherein a double eccentric drive mechanically connects the piston and the drive shaft and the double eccentric drive has a minor eccentric engaged by a minor internal gear that is fixed to the inside of the piston, which converts the piston reciprocating drive motion to an orbiting axle of the minor eccentric and a major eccentric that engages a major internal gear that is fixed to the outside of the chamber and carries the output drive shaft, and the eccentrics are connected at their orbiting axles so that the major eccentric converts the orbiting motion of the minor eccentric axle to a rotational motion of the drive shaft.

Abstract: A DMD spatial light modulator (20) having an improved reset waveform (80) that improves the electrostatic control over the DMD mirrors (30) during switching states (T3). An intermediate bias level is provided to the yoke (32) and mirror (30) during the mirror reset cycle (T3) which is sufficient to maintain a voltage differential between the mirror/yoke and the address electrodes (26,28,50,52) to dynamically park the mirror during a same-state transition, but which voltage differential is insufficient to overcome the hinge restoration forces during an opposite-state transition such that the mirror releases toward the neutral position and can be captured in the other state upon reapplication of the bias voltage. The transition bias level is maintained for a sufficient time period (T3) to allow the mirror/yoke to release from the landing pads (82) a sufficient distance toward the neutral position.

Abstract: A rotary piston mechanism for internal combustion engines, fluid motors, pumps and the like has an outer body enclosing a chamber that is defined by curvilinear walls that circumscribe the chamber axis, and a generally elongated rotor is confined in the chamber and rotatably supported by a rotor carrier that closes one end of the chamber and is rotatably supported on the chamber axis by the outer body so that the rotor rotates on the rotor axis which is parallel to the chamber axis and around the chamber axis over a closed path, the sense of rotation of the rotor on the rotor axis being opposite to the sense of rotation of the rotor axis around the chamber axis, and the rotor is oriented on the rotor axis by a gear train between the rotor and the rotor carrier.

Abstract: A rotary piston mechanism for internal combustion engines, fluid motors, pumps and the like has an outer body enclosing a chamber that is defined by three equal curvilinear walls that circumscribe the chamber axis and define an equilateral triangle in a plane perpendicular to the chamber axis, the walls being convex with respect to the axis, and a generally elongated rotor confined in the chamber of length equal to the span of the chamber along a bisector of any of the angles of the equilateral triangle defined by the chamber walls, the rotor being pivotally supported to rotate about a rotor axis which is parallel to the chamber axis and moves around the chamber axis over a closed path, the sense of rotation of the rotor on the rotor axis being opposite to the sense of rotation of the rotor axis around the chamber axis.