Trolley wheel assembly

Details Trolley wheel assembly Trolley wheel assembly

1994-07-06

1995-06-20

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

277 83, 277 962, 384477, F16C 3376

Patent

active

054255856

ABSTRACT:
A trolley wheel assembly (10) securely sealed to prevent loss of lubricant therefrom and entrance of contaminants therein. The assembly (10) comprises an inner race (12) disposed about an axis of rotation (14) and an outer race (16) concentrically disposed in a spaced relationship about the inner race (12). A plurality of ball bearings (18) are disposed between the inner race (12) and the outer race (16). An outer sealing ring (20) extends radially inwardly from the outer race (16) toward the inner race (12). An inner sealing ring (22) is rotatably disposed about the inner race (12), extending radially outwardly and contiguous the outer sealing ring (20). A wave washer (24) disposed about the inner race (12) biases the inner sealing ring (22) into constant friction engagement with the outer sealing ring (20). A plurality of backup inner sealing rings (26,27) provide a secondary seal about the inner race (12).

REFERENCES:
patent: 2144691 (1937-11-01), Schmal
patent: 2916335 (1957-08-01), Cogger
patent: 3428375 (1969-02-01), Martin
patent: 3537725 (1969-11-01), Frost
patent: 4325591 (1982-04-01), Otto
patent: 4687349 (1987-08-01), Pachuta
patent: 4863293 (1989-09-01), Sytsma

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