Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1986-05-30
1987-11-17
Coe, Philip R.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15339, 15354, A47L 928
Patent
active
047063270
ABSTRACT:
A vacuum cleaner includes a device which senses brush speed while varying nozzle height settings until an optimum height setting is reached. Nozzle height is varied by a motor that rotates a cam to move a support roller and is set by stopping the motor when a predetermined brush speed condition is reached. A programmed control circuit senses the brush speed while controlling the cam motor.
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Burdi Roger D.
Getz Edward H.
Werner Kurt
Coe Philip R.
Reinckens C.
Whirlpool Corporation
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