Bearings – Linear bearing – Combined with seal or guard
Patent
1995-08-01
1999-02-16
Marmor, Charles A.
Bearings
Linear bearing
Combined with seal or guard
384 44, 384144, 277 95, F16C 3300, F16C 2906, F16C 3374, F16J 1534
Patent
active
058712828
ABSTRACT:
The linear motion rolling guide unit has a top seal secured to the casing which comprises sealing members facing side areas of the upper surface of the track rail. Each of the sealing members comprises a lip seal portion and a labyrinth seal portion. The lip seal portion is inclined outwardly toward the raceway grooves of the casing and its front end contacts the side area of the upper surface of the track rail. The labyrinth seal portion is arranged on a central area side of the lip seal portion and does not contact the side area of the upper surface of the track rail. Hence, the labyrinth seal portions of the top seal prevent foreign matters from entering into the raceway grooves and the lip seal portions prevent leakage of grease.
REFERENCES:
patent: 4428629 (1984-01-01), Colanzi et al.
patent: 4437673 (1984-03-01), Miyamoto
patent: 4832511 (1989-05-01), Nisley et al.
patent: 4886374 (1989-12-01), Osawa
patent: 4918846 (1990-04-01), Tsukada
patent: 5149205 (1992-09-01), Tsukada
patent: 5172917 (1992-12-01), du Gay
patent: 5259628 (1993-11-01), Nisley
patent: 5388911 (1995-02-01), Agari
patent: 5464288 (1995-11-01), Tanaka
patent: 5478090 (1995-12-01), Simmons et al.
patent: 5492412 (1996-02-01), Tsukada
Kaness Matthew A.
Marmor Charles A.
Nippon Thompson Co. Ltd.
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