Electronically commutated drive system for vacuum cleaner

Details Electronically commutated drive system for vacuum cleaner Electronically commutated drive system for vacuum cleaner

2006-07-18

2006-07-18

Snider, Theresa T. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S319000, C015S340100, C180S019300

Reexamination Certificate

active

07076830

ABSTRACT:
A self-propelled appliance, such as a vacuum cleaner includes a magnetic field sensor and magnet. A relative position between the magnetic field sensor and the magnet can be changed by a user of the appliance. The magnetic field sensor generates a signal indicating a magnetic field sensed by the sensor. Therefore, the magnetic field sensor signal indicates the relative position of the magnet to the sensor. This relative position signal is interpreted as a speed and direction request for a means for propelling the appliance. The magnetic filed sensor is, for example, a Hall effect sensor. The means for propelling includes, for example, a brushless d.c motor, sensorless motor or switched reluctance motor. Forward and reverse propulsion is provided without the use of a clutch. The appliance includes a reduced number of wearing components.

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Datasheet High Voltage Monolithic IC, ECN3030F/3031F, pp. 1-7.

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