Abstract: Devices and methods for improved separation of small particles from other stock. The device includes a sifting tray assembly and means for vibrating the screen of the sifting tray assembly for separating components and a cryogenic fluid source and injection system for freezing the small parts to the point where they are solid enough to pass through the screen without adhering to the screen. The method entails use of the system to separate small particles in sifting trays while spraying the stock with a cryogen such as liquid nitrogen.

Abstract: Devices and methods for improved separation of small particles from other stock. The device includes a sifting tray assembly and means for vibrating the screen of the shifting tray assembly for separating components and a cryogenic fluid source and injection system for freezing the small parts to the point where they are solid enough to pass through the screen without adhering to the screen. The method entails use of the system to separate small particles in sifting trays while spraying the stock with a cryogen such as liquid nitrogen.

Abstract: Hazardous waste sanitation and removal devices are described that include: a) a unitary shredder system, b) a transport system, a pre-treatment system or a combination thereof, comprising a reciprocating operation system, c) a treatment system, d) a dewatering system, a desolutionizing system or a combination thereof, and e) a collection system for disposal.

Abstract: Hazardous waste sanitation and removal devices, along with methods of sanitizing hazardous waste materials, are described that include: a) a unitary shredder system, b) a transport system, a pre-treatment system or a combination thereof, comprising a reciprocating operation system, c) a treatment system, d) a dewatering system, a desolutionizing system or a combination thereof, and e) a collection system for disposal. Dewatering processes are also disclosed that includes at least one collection of wastes, at least one screw press, at least one conveyor system that carries the at least one collection of wastes after interaction with the at least one screw press, and at least one filter system.

Abstract: Hazardous waste sanitation and removal devices are described that include: a) a unitary shredder system, b) a transport system, a pre-treatment system or a combination thereof, comprising a reciprocating operation system, c) a treatment system, d) a dewatering system, a desolutionizing system or a combination thereof, and e) a collection system for disposal.

Abstract: A security device for coin operated machines comprises a closure adapted to overlie the portion of a coin operated machine containing the coin return slot and the coin box. The closure is hingedly affixed to the case of the machine and is formed from a sheet of material having a composition and thickness to resist bending of the closure by prying. Openings are provided in the closure for access to the coin insert slots and coin return ports of the machine. A raised rib formed on the case or on the inner face of the closure surrounds the area of surface of the case where the coin box and coin return ports are located, The rib is disposed between the case and the closure to prevent insertion of a prying tool between the closure and the case.