Suction hose with conductor means for electrical current

Details Suction hose with conductor means for electrical current Suction hose with conductor means for electrical current

1973-11-12

1976-06-29

Feldman, Peter

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

A47L 500

Patent

active

039655261

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.

REFERENCES:
patent: 1127022 (1915-02-01), Knight
patent: 1330355 (1920-02-01), Spery
patent: 2526415 (1950-10-01), Refsdal
patent: 2528599 (1950-11-01), Loether
patent: 3082289 (1963-03-01), Allen
patent: 3309113 (1967-03-01), Beach
patent: 3314039 (1967-04-01), Opper
patent: 3320725 (1967-05-01), Foster
patent: 3387319 (1968-06-01), Ferraris et al.
patent: 3534317 (1970-10-01), Descarries et al.
patent: 3553629 (1971-01-01), Brown et al.
patent: 3636285 (1972-01-01), Wickham et al.

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