Lubrication – Systems – With safety or indicating means
Patent
1975-10-28
1978-10-24
Feinberg, Samuel
Lubrication
Systems
With safety or indicating means
F16N 1706
Patent
active
041216946
ABSTRACT:
The embodiment of the invention disclosed is a conveyor roll having a cylindrical shell with integral end caps and axial sleeves extending inwardly from the end caps. The shell, end caps and sleeves are rotatably journalled about the shaft by roller bearings between the sleeves and the shaft. An internal labyrinth is provided in each sleeve between the bearing and the end of the shell, this internal labyrinth including a rotatable collar and a non-rotatable bushing carried respectively by the shell and shaft and having a series of facing cylindrical and annular surfaces providing a labyrinthine passageway of restricted cross-section extending from the bearing means to an annular outlet at the end of the shell. An external labyrinth is provided outside the end cap. This includes first and second annular flanges carried respectively by the shaft and shell and axially spaced from the annular outlet and from one another. These two flanges provide inner and outer radial passages. The outer radial passage has radial and axial dimension exceeding those of the inner radial passage whereby centrifugal force acting on a radial column of lubricant in the outer radial passage opposes leakage from the shell.
REFERENCES:
patent: 2234574 (1941-03-01), Olcott
patent: 2641515 (1953-06-01), Bankauf
patent: 3338381 (1967-08-01), Imse
patent: 3841721 (1974-10-01), Coutant
patent: 3892306 (1975-07-01), Bertaud
patent: 3927890 (1975-12-01), Adams
Feinberg Samuel
New River Manufacturing Company, Inc.
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