Suction hose with conductor means for electrical current
First Claim
Patent Images
1. A suction hose for a cleaning apparatus provided with an electrically driven vacuum pump and a separate suction head with electrically actuated cleaning brush means, comprising:
- a substantially air-tight flexible external tube;
a flexible inner tube, substantially coaxial with said external tube and spaced therefrom;
electrical conductor means interposed between said external and said inner tubes and aligned substantially with the axes of said tubes; and
connector means for interconnecting the actuator for said cleaning brush means with the electrical power supply for said vacuum pump drive through said electrical conductor means.
0 Assignments
0 Petitions
Accused Products
Abstract
The suction hose interconnecting the vacuum pump of a cleaning machine with the vacuum head is constructed from two concentric flexible tubes. The cable interconnecting the drive motor for the vacuum head with the vacuum pump casing, and thence with the supply network, extends through the space between the aforementioned concentric tubes of the suction hose. Suitable connectors are provided at both ends of the cable to engage with mating connector parts at the vacuum pump and vacuum head of the cleaning machine, respectively.
-
Citations
17 Claims
-
1. A suction hose for a cleaning apparatus provided with an electrically driven vacuum pump and a separate suction head with electrically actuated cleaning brush means, comprising:
-
a substantially air-tight flexible external tube; a flexible inner tube, substantially coaxial with said external tube and spaced therefrom; electrical conductor means interposed between said external and said inner tubes and aligned substantially with the axes of said tubes; and connector means for interconnecting the actuator for said cleaning brush means with the electrical power supply for said vacuum pump drive through said electrical conductor means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A suction hose for a cleaning apparatus provided with an electrically driven vacuum pump and a separate suction head with electrically actuated cleaning brush means comprising:
-
a flexible external tube; a flexible inner tube, substantially coaxial with said external tube and having an outside diameter slightly smaller than the inside diameter of said external tube to form a substantially annular gap between said tubes; electrical conductor means interposed between said external and internal tubes within said gap and aligned substantially parallel with the axes of said tubes, said gap being dimensioned to receive said electrical conductor means with some clearance; conductor means for interconnecting the actuator for said cleaning brush means with the electrical power supply for said vacuum pump drive through said electrical conductor means.
-
Specification