Abstract: A vertical axis wind turbine that utilizes a unique semi-circular, angled, scoop design and frame to fully harness wind energy. The shape of the scoops maximizes wind collection while minimizing wind resistance. The angle of the scoops allows the wind turbine to catch wind, including updrafts, to produce a rotational and balanced lifting force on the scoop system. This balanced lift is possible due to a stable frame which maintains a fixed position of the vertical axis.

Abstract: Storage and retrieval systems and methods are provided to automate the process of handling a mixed inventory of palletized and containerized items. In one embodiment, the stowage and retrieval system comprises a storage area comprising a plurality of stationary cell modules arranged in a matrix, wherein each cell module comprises at least one motor. The system also comprises a plurality of carriers comprising at least one magnet disposed on an underside of each of the carriers and at least one engagement mechanism disposed on a top side of each of the carriers. The at least one magnet of the carrier is configured to engage the at least one motor of a corresponding cell module, and the at least one motor is configured to move the carrier within the storage area.

Abstract: A breakaway post base includes a pair of adjacent slip plates to allow separation of the upper portion of a traffic sign or the like from its permanently mounted base. The two plates are triangular with notches at their apices, with the plates and related structure secured together by bolts through the apex notches. An impact on the upper post dislodges the bolts, allowing the upper post to move freely and preventing significant damage to the sign structure. At least one of the slip base plates includes a sleeve extending therefrom, into which one end of the post is installed. The post is prevented from rotating relative to the slip base by a series of set screws installed through the slip base sleeve and locking the post immovably therein. Thus, a sign supported by the present assembly cannot rotate relative to the slip base plate.

Abstract: A breakaway post base includes a pair of adjacent slip plates to allow separation of the upper portion of a traffic sign or the like from its permanently mounted base. The two plates are triangular with notches at their apices, with the plates and related structure secured together by bolts through the apex notches. An impact on the upper post dislodges the bolts, allowing the upper post to move freely and preventing significant damage to the sign structure. At least one of the slip base plates includes a sleeve extending therefrom, into which one end of the post is installed. The post is prevented from rotating relative to the slip base by a series of set screws installed through the slip base sleeve and locking the post immovably therein. Thus, a sign supported by the present assembly cannot rotate relative to the slip base plate.

Abstract: A gas powered weapon including a housing for holding a pressurized gas cartridge and a projectile. A hammer mechanism is utilized to drive the cartridge into a stationary firing pin to cause the discharge of the cartridge thus providing a pulse of pressurized gas to shoot a projectile outwardly. A gas seal is disposed adjacent the firing pin to prevent back pressure behind the cartridge, whereby maximum gas pressure is available to shoot the projectile. The gas seal is located away from the non-firing position of the cartridge, such that the gas seal does not impede the motion of the cartridge when the device is fired.