Brush speed sensing control for vacuum cleaner

Details Brush speed sensing control for vacuum cleaner Brush speed sensing control for vacuum cleaner

1980-03-31

1982-05-04

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

15391, 15319, 361 23, H02H 709

Patent

active

043285228

ABSTRACT:
This is concerned with a sensing control for a vacuum cleaner to sense the speed of the beater brush so that when it becomes clogged or jammed and tends to slow down, the control will automatically disconnect all power from the drive motor to thereby protect both the motor and any drive belts that are used. Some aspects are usable with either a canister or an upright vacuum cleaner and some are specifically concerned with an upright unit.

REFERENCES:
patent: 4025832 (1977-05-01), Jones
patent: 4042965 (1977-08-01), Wisman
patent: 4163999 (1979-08-01), Eaton et al.

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