Conveyor trolley assembly with moisture-resistant bearing seal
Patent 4384387 Issued on May 24, 1983. Estimated Expiration Date: 
December 10, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 10, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1503920 1737036 1793190 2074901 3447843 3537725 3553765 Trolley construction Removable seal for bearings Rolling bearing InventorApplicationNo. 06/215050 filed on 12/10/1980US Classes:16/107, Wheels105/150, Single rail277/429, Fluid collector or receiver384/449Outer race integral with wheelExaminersPrimary: Silverberg, Fred A.Attorney, Agent or FirmInternational ClassesB65G 39/00 (20060101)F16C 33/78 (20060101) F16C 33/80 (20060101) F16C 33/76 (20060101) B65G 39/09 (20060101) F16C 13/00 (20060101) AbstractA conveyor trolley assembly consisting of a trolley bracket having an axle carrying a hub, and an annular wheel carried on a bearing interposed between the hub and the wheel, is provided with a four-part, moisture resistant seal for the side of the bearing facing the trolley bracket. The seal is composed of an annular shield mounted on the axle and interlocked with the trolley bracket, a slinger seal mounted on the wheel inside of the shield, and second and third lubricant seals mounted on the wheel hub and on the wheel, respectively. Moisture which enters around the periphery of the shield either gravitates to a drain opening or is expelled by the action of the slinger seal.Other References
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