Abstract: A continuous flow recycling cleaning system includes a canister containing a liquid cleaning solution, and a dispensing conduit for conveying the cleaning solution from the canister to a cleaning tool head for direct application to a carpet, upholstery fabric or other material at an application area. A recovery conduit is connected to the cleaning tool head for returning recovered cleaning solution, along with air and extracted soil, to the canister. The system includes at least one ozone injector selectively positioned along a fluid flow pathway that includes the canister, the dispensing and recovery conduits, and the cleaning tool head. The fluid flow pathway further can include a counterflow conduit and an ozone-introduction conduit provided solely for the injection of ozone. Each injector is coupled to an ozone generator, to combine the ozone with the cleaning solution flowing through the injector.

Abstract: A liquid recycling and filtering system is well suited for use in continuous flow recycling surface cleaning devices. The system employs a canister containing a liquid cleaning solution, and a cylindrical filter submerged in the liquid and defining a chamber containing a portion of the liquid. A liquid supply conduit withdraws liquid from the chamber and supplies the liquid to a cleaning tool head, where the liquid is sprayed upon a floor or other surface being cleaned. A counterflow conduit is coupled to the liquid supply conduit and to the chamber, for transporting liquid under pressure to a spraying assembly within the chamber. The spraying assembly includes a rotatable manifold and nozzles at opposite ends of the manifold. The nozzles spray the liquid in planar, fan-shaped patterns that impinge upon the filter over limited surface areas.

Abstract: A network access device (NAD) is comprised of a data set for coupling to a data communication trunk, a trunk control unit (TCU) connected with the data set, a trunk control interface (TCI) connecting the TCU to an internal data bus, an internal memory, a microprocessor control and a device interface for connection to a computer or some computer peripheral device. The data set provides for two-way communication from the data trunk to the TCU. Various network access devices connected to the data trunk communicate with one another. Every normal communication between NADs includes a concurrent, predictable state change in both NADs. The response to a message from one NAD to another includes information concerning what occurred upon receipt of the message. Various latches, sequencers, microprocessor logic and registers provide for functions according to various input and output states of response.