Upright vacuum cleaner

Details Upright vacuum cleaner Upright vacuum cleaner

1998-01-16

1999-08-03

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

153273, 15383, 180116, 180129, A47L 706

Patent

active

059308648

ABSTRACT:
An upright vacuum cleaner includes a main body, a floor nozzle unit, and a float plate or float unit. The main body has a motor fan for generating a suction force and a dust-collection chamber for collecting dust. The motor fan provides the suction force to the dust collection chamber. The floor nozzle unit is disposed under the main body. The floor nozzle unit has an inlet port connected to the dust-collection chamber for attracting dust on a floor into the dust-collection chamber by the suction force of said motor fan. The float plate or float unit is disposed on a lower face of the floor nozzle unit. The float plate or float unit includes a floor opposing face where an outlet port is formed for spouting discharge air to the floor from the motor fan. The float face is located around the outlet port to receive a lifting force produced by pressure of the discharge air between the float face and the floor to be cleaned. The float unit has an elastic portion arranged on a lower portion of the float unit to contact a floor. Also, a pressure-regulating valve is provided for controlling the pressure of the discharge air so as to maintain the discharge air pressure under a predetermined safe pressure.

REFERENCES:
patent: 3283355 (1966-11-01), Jepson
patent: 3780398 (1973-12-01), Candor
patent: 4571849 (1986-02-01), Gardner et al.
patent: 4884315 (1989-12-01), Ehnert
patent: 5210996 (1993-05-01), Fassauer
patent: 5392492 (1995-02-01), Fassauer
patent: 5553347 (1996-09-01), Inoue et al.

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