Bearings – Rotary bearing – Antifriction bearing
Reexamination Certificate
2006-07-11
2006-07-11
Joyce, William C (Department: 3682)
Bearings
Rotary bearing
Antifriction bearing
C384S478000, C384S486000, C384S489000, C172S394000
Reexamination Certificate
active
07073949
ABSTRACT:
A maintenance free repetitive sealing system for a disk blade bearing hub utilizing an integrated system of components to seal and protect the primary bearing seal. The blade side of the spindle includes a hub overlap portion which deflects dirt, keeps large debris out, and prevents wrapping. A plastic seal protector keeps dirt and debris from pushing directly into external seal lips of a multiple lip seal. The lip seal provides positive sealing and is backed up by a grease layer barrier. The hub overlap, plastic seal protector, and grease barrier protect the bearing seal. The back side of the bearing hub is positively sealed with a protected O-ring and dust cap combination. The cap combination also protects the blade mounting hardware threads and nut.
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patent: 6158523 (2000-12-01), Gengler et al.
Bierl James Franklin
Cox Philip David
Ruckle Jarrod Ray
Deere & Company
Joyce William C
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