Electromagnetic energy-carrying tube and fabrication method ther

Details Electromagnetic energy-carrying tube and fabrication method ther Electromagnetic energy-carrying tube and fabrication method ther

1979-03-12

1982-01-19

Askin, Laramie E.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15377, 138122, 138129, 138154, 156143, 156195, 174 47, A47L 924, F16L 1112, F16L 1116, B29D 2312

Patent

active

043109462

ABSTRACT:
The hose, which is particularly adapted for use with an electrically-driven vacuum cleaning apparatus, comprises a substantially air-tight, flexible tube which is pneumatically coupled between the vacuum pump and the suction head. The suction hose comprises one or more elongated strips which is or are helically wound into tubular form. In a pair of parallelly placed strips, the strip margin of the first strip is secured to an adjacent margin of the second strip at adjoining convolutions of the strips. Electrical conductors are carried by the strips within helically extending cavities formed at the edges or margins of each of the strips and are a portion of that means which electrically couples the cleaning brush to the electrical power supply.

REFERENCES:
patent: 2695631 (1954-11-01), Seck
patent: 3255780 (1966-06-01), Squirrell
patent: 3679531 (1972-07-01), Wienand et al.
patent: 3965526 (1976-06-01), Doubleday
patent: 4167645 (1979-09-01), Carey
patent: 4203476 (1980-05-01), Vitellaro
patent: 4209043 (1980-06-01), Menzel
patent: 4224965 (1980-09-01), Suchor

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