Electric motor control for vacuum cleaner

Details Electric motor control for vacuum cleaner Electric motor control for vacuum cleaner

1980-11-28

1983-02-01

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

A47L 900

Patent

active

043707777

ABSTRACT:
Disclosed is an improvement in a vacuum cleaner having a roller-shaped brush mounted in the vacuum nozzle thereof. A separate rotational speed control is provided for the electric motor which operates the roller-shaped brush and in preferred embodiments this rotational speed control is adjustable by the operator of the vacuum cleaner. In a further embodiment, two separate rotational speed controls are provided, one controlling the speed of the roller-brush motor and the other controlling the speed of the vacuum-generating motor. A still further embodiment comprises a single rotational speed control which can be interchangeably switched into or out of connection with either the roller-brush motor or the vacuum-generating motor. A still further embodiment discloses a roller-brush motor speed control which can be added to existing vacuum cleaners.

REFERENCES:
patent: 3579706 (1971-05-01), Hetland
patent: 3588943 (1971-06-01), Hetland
patent: 3636285 (1972-01-01), Wickham et al.
patent: 3855665 (1974-12-01), Schwartz

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