Abstract: Provided is an energy storage system configured to accumulate energy for subsequent discharge. One embodiment includes an indirect energy storage assembly configured to accept energy input from a direct storage assembly. The indirect energy storage assembly includes a converter for lifting a mass, a speed reducer coupled to the converter for increasing torque provided, and a mass coupled to the speed reducer for generating potential energy when raised. In one embodiment, the direct energy storage assembly produces energy based on descent of a mass, the descent controlled by operation of a speed increaser coupled to a generator. In one example, the speed increaser provides an input:output ratio of at least 1:100. The speed increaser can be configured based on parameters of the generator (e.g., speed and torque). The mass of the direct energy storage assembly can include a float for lifting the mass responsive to water level.

Abstract: Provided is an energy storage system configured to accumulate energy for subsequent discharge. One embodiment includes an indirect energy storage assembly configured to accept energy input from a direct storage assembly. The indirect energy storage assembly includes a converter for lifting a mass, a speed reducer coupled to the converter for increasing torque provided, and a mass coupled to the speed reducer for generating potential energy when raised. In one embodiment, the direct energy storage assembly produces energy based on descent of a mass, the descent controlled by operation of a speed increaser coupled to a generator. In one example, the speed increaser provides an input:output ratio of at least 1:100. The speed increaser can be configured based on parameters of the generator (e.g., speed and torque). The mass of the direct energy storage assembly can include a float for lifting the mass responsive to water level.

Abstract: The invention relates to a mail box alarm system arranged to notify the owner of a rural mail box when mail has been received. A transmitter positioned in the mail box radiates a coded signal each time the door of the box is opened or closed. A receiver, positioned in the associated residence or business, operates a visual and audible alarm. When mail is delivered, both the visual and audible alarm are energized during the time the door is open for the delivery of mail. When the door is closed, only the visual alarm remains energized. When the mail is picked up, the visual alarm is automatically deenergized and the mechanism re-positioned for a new cycle.