Vacuum cleaner with three stage air induction system

Details Vacuum cleaner with three stage air induction system Vacuum cleaner with three stage air induction system

1999-03-03

2000-09-26

Warden, Sr., Robert J.

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

15347, 4174232, 41742314, A47L 922

Patent

active

061227994

ABSTRACT:
A vacuum cleaner includes a housing, a nozzle for picking up dirt and debris, and a vacuum generator. The vacuum generator includes a motor and drive shaft, a first fan connected to the drive shaft, a shield including a recess that functions as an air induction chamber for receiving the fan, and an air inlet port formed in the shield. A pathway provides fluid communication between the nozzle and the vacuum generator. A dirt and debris collector in the form of a dust bag is provided in the pathway between the nozzle and the vacuum generator. The vacuum cleaner also includes an infuser that is carried on the shield about the air inlet port. The infuser directs air into the induction chamber in a more efficient manner to improve vacuum cleaner performance.

REFERENCES:
patent: 2175641 (1939-10-01), Replogle
patent: 2658665 (1953-11-01), Tschudy
patent: 3263909 (1966-08-01), Mazepa
patent: 3932070 (1976-01-01), Porter et al.
patent: 4808090 (1989-02-01), Evans
patent: 4836753 (1989-06-01), Berfield et al.
patent: 5134752 (1992-08-01), Shipman
patent: 5296769 (1994-03-01), Havens et al.
patent: 5454690 (1995-10-01), Wolfe et al.
patent: 5477588 (1995-12-01), Iida et al.

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