Seal system for irrigated scrubber mandrel assembly

Details Seal system for irrigated scrubber mandrel assembly Seal system for irrigated scrubber mandrel assembly

2007-01-16

2007-01-16

Spisich, Mark (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

Brushing

C015S088300

Reexamination Certificate

active

10625973

ABSTRACT:
An improved cleaning fluid supply housing assembly for a cascade-type substrate scrubber having a sliding piston configured with a flange with recesses so that the piston is out of contact with the rotating part of the brush core mandrel bearing assembly. Rather, the piston flange outer face only contacts the stationary outer race of the mandrel bearing. The water supply piston is also configured with a full bore to minimize the pressure on the end of the mandrel. A tolerance-controlled leak through the bearing is provided by the configuration of the piston flange to provide a flushing of the area in which wear might be a source of particle generation by a controlled tolerance leak upstream of the brushes. These features substantially eliminate the source of particle generation from contact wear and the contribution of such wear particles into the interface between the brush and the substrate surface being cleaned.

REFERENCES:
patent: 5439029 (1995-08-01), Becker
patent: 6625835 (2003-09-01), Frost et al.

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