Dirt ejecting ball transfer unit

Details Dirt ejecting ball transfer unit Dirt ejecting ball transfer unit

1995-02-01

1996-07-30

Bidwell, James R.

Conveyors, chutes, skids, guides, and ways

Rollerways

Submerging and rising

B65G 1300

Patent

active

055403140

ABSTRACT:
A dirt ejecting ball transfer unit comprises a housing containing a cup with a substantial aperture, and a load bearing ball supported on ball bearings. The housing is provided with a series of apertures that overlap with the cup's substantial aperture to define a plurality of passage entries into the housing apertures. The passage entries have an elongate shape. The housing apertures have a minimum width which is substantially larger than the minimum width of the passage entries. Dirt and other contaminants that penetrate the seals of the ball transfer unit are quickly ejected through the housing apertures when the ball is rotated under load, thereby preventing failure of the ball transfer unit.

REFERENCES:
patent: 1963956 (1934-06-01), Craig
patent: 3920290 (1975-11-01), Evarts
patent: 4036345 (1977-07-01), Webb
patent: 4871052 (1989-10-01), Huber

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