Bearings – Rotary bearing – Antifriction bearing
Patent
1999-01-20
2000-08-15
Hannon, Thomas R.
Bearings
Rotary bearing
Antifriction bearing
384488, F16C 3380
Patent
active
061025755
ABSTRACT:
A compound bearing apparatus of the present invention comprising a shaft, a sleeve outer ring surrounding the shaft, two rows of rotating bodies disposed between the shaft and the sleeve including a first row of the rotating bodies interposed between an outer rolling contact recess formed directly on the outer periphery of the shaft and a first inner rolling contact recess formed on the inner peripheral surface of the sleeve outer ring, and a second row of the rotating bodies interposed between an outer rolling contact recess formed on the outer periphery of an inner ring fitted onto the shaft and a second inner rolling contact recess formed on the inner peripheral surface of the sleeve, and a pair of inner and outer sealing plates having a through hole at the central portion thereof; wherein at the one side of the apparatus where the first row of the rotating bodies is provided, the sealing plates are mounted between the sleeve outer ring and the shaft with leaving between the plates and the sleeve outer ring or the shaft a slight clearance sufficient to provide a labyrinth seal function, and at the other side of the apparatus where the second row of the rotating bodies is provided, the sealing plates are mounted between the sleeve outer ring and the inner ring with leaving between the plates and the sleeve outer ring or the inner ring a slight clearance sufficient to provide a labyrinth seal function.
REFERENCES:
patent: 2044380 (1936-06-01), Cobb
patent: 4810108 (1989-03-01), Yajima
patent: 4827168 (1989-05-01), Nakajima
patent: 5556209 (1996-09-01), Obara et al.
patent: 5560715 (1996-10-01), Mosby
patent: 5841210 (1998-11-01), Obara
Hannon Thomas R.
Minebea Co. Ltd.
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