Abstract: In order to be able to realistically display and imitate the presence of humans and/or animals in a building with simple, inexpensive means, it is provided that the intensity of the radiated light of at least one group of adjacent light sources is reduced relative to the intensity of the radiated light from light sources of the arrangement outside of the at least one group in order to imitate a shadow on a wall illuminated by the security device and further light sources are added to at least one group and/or light sources of the at least one group are removed from the same and the intensity of the radiated light of an added light source is reduced and the intensity of a remote light source is increased in order to imitate a movement of the shadow.

Abstract: A wake test instrumentation and more particularly, systems and methods for determining wake velocities and directions are provided. The wake test instrument includes a linkage system mounted to a base and a pole pivotally mounted to the linkage system and which comprises a hydrofoil system. The wake test instrument further includes a hydrofoil system mounted to the pole. The wake test instrument further includes a water flow meter mounted to the pole which is structured to measure wake parameters.

Abstract: A power breaker includes a fine motion mechanism portion having a chattering suppression portion formed of ring members and a ring member provided with sloping surfaces or curved surfaces at positions corresponding to one another in a state stacked up in a center axis direction, so that an impact generated upon collision of a movable electrode with a fixed electrode when a circuit is closed is trapped as a compression force. Hence, kinetic energy generated upon collision is consumed by energy absorption by friction due to a spring property of the ring members and a frictional force on the contact surfaces. It thus becomes possible to reduce a generation time of a chattering action.

Abstract: Techniques are provided for inhibiting changes in the operational state of electrical circuits for lights, appliances and other devices by controlling the effect of manual actuation of an electrical switch in an electrical circuit. A normal mode is established in which manual actuation of the switch effects a change in a state of current flow in the circuit. An alternative holiday mode is also established in which manual actuation of the switch has no effect on current flow in the circuit. Automatic switching occurs between the normal mode and the holiday mode at specific times corresponding to specific events dependent on the time of year, a time of day and a geographic location of the circuit.

Abstract: A method includes selectively applying full cycles of AC power to a load. The cycles may have first and second states such as full on and full off states. The cycles may be arranged in groups in a pattern. The pattern may have a length that is shorter than a perceptible response time of the load. Different patterns may be used for different power levels.

Abstract: The present invention is a thermally activated electrical switch for use in simulating human activity. The invention is features dual heat sources enclosed in a thermally isolated chamber within the invention. Since the activation of the switch is dependent upon the ambient temperature of the environment, it opens and closes at sufficiently random intervals to simulate human activity. This embodiment includes the use of a photoelectric sensor to further vary timing of the switch actuation.

Abstract: A wiper motor suitably applied to the wiper apparatus possible to solve a difference in the wiping range caused by the difference in the operation speed of the wiper blade by the wiper linkage used with an eccentric mechanism, which is provided with a semi-ringshaped high-potential plate connected with the power source, a semi-ringshaped low-potential plate grounded and disposed oppositely to the high-potential plate, and a common plate disposed in the center between the high and low-potential plates and electrically connected with the movable contact to rotate slidingly on the high and low-potential plates together with an output shaft of the wiper motor.