Automatically adjustable floating cleaner head

Details Automatically adjustable floating cleaner head Automatically adjustable floating cleaner head

1987-08-27

1988-07-05

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15340, 15360, 15362, A47L 534

Patent

active

047545208

ABSTRACT:
A floating cleaner head used with a self-propelled front wheel drive floor cleaning apparatus, such as a vacuum cleaner. Both the forwardly located drive wheels and the drive transmission therefor are pivotably mounted on a bracket beneath the cleaner head. A skid plate attached to the bracket extends rearwardly from the bracket pivot to sense the carpet pile height of a floor to be cleaned. As the pile height increases, the bracket is pivoted so as to force the drive wheels deeper into the carpet pile which increases the propelling force. Additionally, since the drive wheels and transmission are located intermediate freely-rotatable rear wheels and a forwardly located rotary brush and nozzle area, operation of the skid plate also cause the entire cleaner head to float or pivot about the axis of the rear wheels so as to automatically adjust the elevation of the rotary bar and nozzle area. Furthermore, by making practical a front wheel drive, the need for neutral interlock for transport of the cleaner from room to room is eliminated since the rear support wheels are freely rotatable.

REFERENCES:
patent: 2232766 (1941-02-01), Boyle
patent: 2244132 (1941-06-01), Taylor
patent: 2291250 (1942-07-01), Nielsen et al.
patent: 2592710 (1952-04-01), Kirby
patent: 4171554 (1979-10-01), Tschudy
patent: 4342132 (1982-08-01), Fromknecht
patent: 4615071 (1986-10-01), Frohbieter

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