Back to results
US 4,283,594 AGranted
Vacuum apparatus having protective device for operator and method
AssigneeDayco Corporation
InventorM. John Somers
Life of this patent
Estimating the term…
Abstract
A vacuum hose assembly, method of making same, and vacuum cleaner using same are provided wherein the hose assembly has a chamber in at least one of a pair of hose connectors thereof wherein such chamber is readily opened and closed and a protective device is disposed within the chamber and electrically connected to the electrical circuit of the vacuum hose assembly and the device is sensitive to practically every type of fault capable of causing injury to humans and operates to interrupt the electrical circuit therethrough upon detection of a fault.
Claims16
In a canister type vacuum cleaner comprising a vacuum hose assembly;
- said vacuum hose assembly comprising a vacuum hose;
- a pair of hose connectors provided at opposite end portions of said hose;
- a pair of wires extending along said vacuum hose and serving the dual purpose of electrical conductors and hose reinforcing wires;
- and an electrical connector associated with each hose connector and having said dual purpose wires connected thereto;
- the improvement comprising, a chamber in at least one of said hose connectors, readily opened and closed access means for said chamber, a protective cartridge within said chamber, said cartridge being adapted to be easily installed within and removed from said chamber, electrical connection means electrically connecting said cartridge between an associated electrical connector and said wires, said cartridge being sensitive to and serving to detect practically every type of fault capable of causing injury to humans and operating to interrupt the electrical circuit therethrough upon detection of a fault, and means for installing said cartridge within said chamber in only one operative position at which said cartridge enables operation of a cleaning instrument supplied with electrical power by said wires.
2 more elements
In a method of making a vacuum hose assembly for a canister type vacuum cleaner comprising the steps of;
- providing a vacuum hose;
- forming a pair of hose connectors at opposite end portions of said hose;
- extending a pair of wires along said vacuum hose;
- said wires serving the dual purpose of electrical conductors and hose reinforcing wires;
- and attaching an electrical connector at each end of said dual-purpose wires while supporting each electrical connector in an associated hose connector;
- the improvement comprising, forming a chamber in at least one of said hose connectors, providing readily opened and closed access means for said chamber, installing a protective cartridge within said chamber while simultaneously electrically connecting same between an associated electrical connector and said wires, said cartridge being adapted to be easily installed within and removed from said chamber, said device being sensitive to and serving to detect practically every type of fault capable of causing injury to humans and operating to interrupt the circuit therethrough upon detection of a fault, and providing means for installing said cartridge within said chamber in only one operative position at which said cartridge enables operation of a cleaning instrument supplied with electrical power by said wires.
3 more elements
In a vacuum hose assembly for a canister type vacuum cleaner;
- said vacuum hose assembly comprising a vacuum hose;
- a pair of hose connectors provided at opposite end portions of said hose;
- and a pair of wires extending along said vacuum hose and serving the dual purpose of electrical conductors and hose reinforcing wires;
- and an electrical connector associated with each hose connector and having said dual-purpose wires connected thereto;
- the improvement comprising, a chamber in at least one of said hose connectors, readily opened and closed access means for said chamber, a protective cartridge within said chamber, said cartridge being adapted to be easily installed within and removed from said chamber, electrical connection means electrically connecting said cartridge between an associated electrical connector and said wires, said cartridge being sensitive to and serving to detect practically every type of fault capable of causing injury to humans and operating to interrupt the electrical circuit therethrough upon detection of a fault, and means for installing said cartridge within said chamber in only one operative position at which said cartridge enables operation of a cleaning instrument supplied with electrical power by said wires.
2 more elements
Dependencies are inferred from the claim text.