Triple-bearing bristled roller with comprehensive thread...

Details Triple-bearing bristled roller with comprehensive thread... Triple-bearing bristled roller with comprehensive thread...

2007-12-18

2011-12-06

Redding, David (Department: 3723)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S389000

Reexamination Certificate

active

08069530

ABSTRACT:
A spinning bristled roller assembly for the nozzle of a vacuum cleaner or other carpet cleaning apparatus. The roller assembly includes three bearings protected by a comprehensive thread guard system. The three bearing system, in combination with the structure of the tubular roller body and bearing housing provides an assembly having inherently improved balance characteristics that eliminate the prior need for dynamic balancing to ensure vibration-free operation.

REFERENCES:
patent: 3737937 (1973-06-01), Nordeen
patent: 4403372 (1983-09-01), Keane et al.
patent: 4429430 (1984-02-01), Lyman
patent: 4847944 (1989-07-01), Lackner
patent: 4976003 (1990-12-01), Williams
patent: 5249328 (1993-10-01), Shin
patent: 5435038 (1995-07-01), Sauers
patent: 5598600 (1997-02-01), Stegens
patent: 6539575 (2003-04-01), Cohen
patent: D478698 (2003-08-01), Mertes et al.

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