Abstract: A vacuum cleaner adaptor for micro tools consisting of an adaptor body of tubular form having a large diameter section for fitting to a conventional vacuum cleaner vacuum intake port or positive air pressure discharge port, an integral conical transition section and a small diameter section for fitting to a small diameter hose or tube or to the micro tool per se. In one form, longitudinal slots of arcuate configuration are formed within the conical transition section of the adaptor body at circumferentially spaced positions and are selectively closed off by a rotatable conical form shield having similar sized longitudinal slots therein. Radially projecting members on the shield and adaptor body limit rotation of the shield relative to the body between a full slot open position and a slot partially open position by circumferentially offsetting the slots of the adaptor body and shield.

Abstract: A floor nozzle for vacuum cleaner in addition to a main rotating brush has auxiliary rotating brushes positioned aperatures in the side faces of the nozzle which extend to the bottom thereof, thereby to brush and suck dusts of edges on a carpet adjacent a wall of a room.

Abstract: Suction nozzle for use in connection with a vacuum cleaning device for cleaning simultaneously the vertical surface (3) of a plinth (5), which is provided with a textile covering, and the immediately adjacent floor surface (2) likewise provided with a textile flooring. The suction nozzle (1) is provided with two suction openings (7 and 8) arranged approximately perpendicularly relative to each other so that the horizontal suction opening (7) rests on the floor surface (2) to be cleaned while the vertical suction opening (8) is in contact with the vertical surface (3) of the plinth (5). For increasing the cleaning effect, at least one rotating, mechanincally driven brush (5) is provided within the horizontal suction opening (7) and the vertical suction opening (8).

Abstract: A vacuum cleaner head with a hood which closely fits the floor has a rotor with a plurality of nozzles supported on a hub with a slot. Outside air is drawn through the hub and nozzles into the hood to provide air jets from the nozzles which assist in disloging particles for recovery by the vacuum.

Abstract: Agitator restrictor structure in combination with a revolving or a reciprocating type sweep drive is located close to the nozzle mouth in a suction cleaner by providing a cavity in the agitator structure for recessing the major portion of the cleaning brush to retain the designed bristle tuft lengths. In this location, the agitator structure restricts and changes the shape of the airstream at the nozzle opening to increase its speed, resulting in greater cleaning efficiency.

Abstract: A vacuum cleaner with improved carpet-wall edge cleaning ability achieved by bringing a free brush roll cleaning end and its bristle tufts and beater bars into optimum proximity with the edge to be cleaned. Aligned bearing structures within which the brush roll revolves, conventionally disposed to fetter the brush roll ends, are placed so that at least one is positioned on an inner segment of the brush roll, leaving a brush roll cleaning end free, unfettered. The space vacated by the bearing structure so treated allows extension of the free brush roll cleaning end into loose abutment with the general housing material, the bristle tufts and the beater bars comparably extended. These latter members can now function closer to the edge to be cleaned, thereby performing better. Additionally, a cutout in the general housing and adjacent materials allows of further extension of the free brush roll cleaning end into space thus vacated.

Abstract: A separator system for use in removing liquid from a surface, which surface may be liquid or solid. The system consists of a pickup head, a separator, and an exhaust source which draws air through the pickup head and separator. The pickup head causes liquid to be entrained in the flow of air passing through it. The air and entrained liquid pass to the outer chamber of the separator where the liquid falls out and the air is fed through the inner chamber of the separator to the exhaust source.

Abstract: Vacuum removal means for removing excessive developer material from a member having a latent magnetic image developed with magnetic developer material. The vacuum removal means comprises a chamber having entrance and exit ports of predetermined cross-sectional area such that the ratio of entrance port to exit port is sufficiently small to assure substantially uniform air flow across the entrance port when the chamber is subjected to negative pressure through the exit port. The entrance port of the chamber is in communication with means for subjecting the developed surface of the member to a substantially uniform shearing air flow when the chamber is subjected to the negative pressure. A second entrance port of equal cross-sectional area to the first entrance port may be provided to the chamber in association with gating means for selectively varying the cross-sectional area of each entrance port while maintaining a constant combined cross-sectional area for the entrance ports.