Vacuum cleaner and method for operating the same

Details Vacuum cleaner and method for operating the same Vacuum cleaner and method for operating the same

1989-10-03

1992-10-20

Cusick, Ernest G.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15339, 15404, G05D 706

Patent

active

051558858

ABSTRACT:
An output of a electric driven blower in a cleaner main body is controlled in response to a detection value of a pressure sensor which detects an operation condition in the cleaner main body. A change-over level setting value is provided as a control value for the sensor so as to form a judgment point for changing over a control condition of the blower. A return level setting value is provided as a control value for the sensor so as to form a judgment point for returning to a previous control condition of the blower from a changed-over condition of the blower. When the detection value of the sensor is more than the change-over level setting value, the return level setting value is set higher than the change-over setting value, thereby the output of the blower is increased, or the return level setting value is set a lower than the change-over level setting value, thereby the output of the blower is decreased.

REFERENCES:
patent: 1904973 (1933-04-01), Smellie
patent: 2789660 (1957-04-01), Brown
patent: 3577869 (1971-05-01), Tomoyoki et al.
patent: 4021879 (1977-05-01), Brigham
patent: 4399585 (1983-08-01), Kullik et al.
patent: 4580311 (1986-04-01), Kurz
patent: 4601082 (1986-07-01), Kurz
patent: 4654924 (1987-04-01), Getz et al.

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