A vacuum cleaning tool adapter for vacuum cleaning systems having a control device incorporated within the adapter. The control device includes an electrical switch and may also include other circuit control devices. Also incorporated in the adapter is a connect-disconnect connector for mechanically interengaging the adapter with a hose assembly leading to the vacuum cleaner, which also provides electrical continuity from the adapter through current conducting reinforcing members in the hose assembly and into the vacuum cleaner. The adapter provides for electrically connecting the cleaning tool into the system, and the switch is used to turn the power on and off from the vacuum cleaner motor to the cleaning tool. An additional switch may also be located in the adapter for controlling the vacuum cleaner motor itself.

Vacuum cleaning tool adapter with electrical control means

A bed system (20) is provided which limits the inflation time of each of a plurality of ventilating air mattresses (22) with the system (20) to a predetermined time. Each mattress (22) includes a fitting (30) with a spring biased pin (48) for actuating a pump switch (56) when the mattress fitting (30) is properly mated with a pump adapter (40) thereby facililating inflation of said mattress. The pump (24) is programmed to deactivate at the predetermined time, and to remain deactive until the pump switch (56) is reset. The pin (48) is positioned and constructed to be mechanically rendered inoperable in the process of resetting the switch (56) thereby preventing each mattress fitting (30) from actuating the pump switch (56) a second time.

Bed system having programmable air pump with electrically interlocking connectors

A temperature responsive fuse is provided for use in a vacuum cleaner brush dowel drive clutch mechanism to prevent overheating of the clutch mechanism upon a continued rotation of the drive belt after the brush dowel has stalled due to jamming or similar occurances. The friction clutch is provided to prevent damage to the cog drive belt if the brush dowel becomes stalled and the fuse, which is a meltable spacer positioned between a loading spring and the engaging friction drive surfaces, is provided to prevent excessive heat build-up in the clutch mechanism in case a safety circuit, which normally detects stoppage of the brush dowel and deenergizes the dowel drive motor, should fail. The fuse spacer will melt at a temperature in the range of 300° F. to 400° F. to unload the spring thereby reducing friction between the engaging surfaces of the clutch mechanism and thus lowering the amount of heat generated.

Temperature limiting system for a spring loaded torque limiting clutch

A flexible vacuum cleaner hose having an electric lead integral therewith and extending from one end to the other of said hose, a control switch and an overload device carried by said hose and in circuit with said lead, and electric cords extending from the ends of said hose, also in circuit with the lead, providing an overload protected current carrying vacuum cleaner hose for energizing a vacuum cleaner power head.

Electric current-carrying hose assembly having end fittings enclosing an electrical switch and/or a circuit-breaking device

Vacuum cleaner hose adapter

A vacuum hose assembly, method of making same, and vacuum cleaner employing same are provided wherein the hose assembly comprises a thermally actuated switch which breaks the electrical circuit through cooperating electrical leads of an electrical system thereof once a predetermined temperature level is reached by the switch to prevent the possibility of fire and electrical shock in the event of fire-exposed leads.

Victor M. Grabovez

Papers

Thermally protected vacuum hose assembly

Vakuumschlaucheinrichtung fuer elektrisch betriebene vorrichtungen sowie verwendung der vakuumschlaucheinrichtung fuer staubsauger