Roll or roller – With end ring or reinforcement
Patent
1993-10-06
1995-03-21
Hughes, Tom
Roll or roller
With end ring or reinforcement
492 7, 492 16, 29898041, 384112, 384123, 226194, B65H 23025
Patent
active
053991419
ABSTRACT:
A roller supporting structure has a shaft having first grooves for generating a dynamic pressure, and first and second retaining plates placed opposite both ends of a roller when the roller is mounted around the shaft. The first and second retaining plates have second grooves for generating a dynamic pressure on their roller-facing end faces. When the roller is placed in an axially central portion of the shaft, that is, in the middle between the retaining plates, there is left a predetermined gap between the roller-side end face of each retaining plate and each end face of the roller. The gap is large enough so that the second grooves of the first and second retaining plates do not generate dynamic pressure between these retaining plates and the roller. The second grooves of one of the first and second retaining plates generate dynamic pressure when the roller is displaced from the axially central portion toward the one retaining plate.
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patent: 3221389 (1965-12-01), Cowell
patent: 3368851 (1968-02-01), Eggmann
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patent: 3420583 (1969-01-01), Hirs
patent: 3950039 (1976-04-01), Huber et al.
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patent: 5127744 (1992-07-01), White et al.
patent: 5277499 (1994-01-01), Kameyama
Spiral Groove Bearings, A. E., Muijderman, Philips Technical Library of Phillips, Gloiellampenfabriken, Eindhaven, Netherlands--pp. "Symbols" (5), Chapter 1, First page., and.
Hughes Tom
Koyo Seiko Co. Ltd.
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