Nozzle assembly with air flow acceleration channels

Details Nozzle assembly with air flow acceleration channels Nozzle assembly with air flow acceleration channels

2007-05-01

2007-05-01

Snider, Theresa T. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S415100

Reexamination Certificate

active

10806912

ABSTRACT:
A nozzle assembly is provided for a suction cleaning device. The nozzle assembly includes a body having an edge and a bottom wall. The bottom wall includes an intake opening and a portion extending between the edge and the intake opening. At least one channel is provided within that portion. That channel extends between the edge and the intake opening and has a cross sectional area decreasing in a direction extending from the edge toward the intake opening. Air drawn through the channel is accelerated as it approaches the intake opening in order to increase the dirt, dust and debris entraining capacity of that air and overall vacuum cleaner cleaning efficiency.

REFERENCES:
patent: 1785675 (1930-12-01), Cundiff
patent: 2321648 (1943-06-01), Brunner, Jr.
patent: 3550183 (1970-12-01), Wolf
patent: 4315344 (1982-02-01), Woodward et al.
patent: 5987700 (1999-11-01), Edlund
patent: 6105207 (2000-08-01), Muller
patent: D440721 (2001-04-01), Hirokawa
patent: 6421875 (2002-07-01), Coombs et al.
patent: 2006/0000053 (2006-01-01), Lim et al.

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