Oil bath encoder seal

Details Oil bath encoder seal Oil bath encoder seal

2006-03-09

2008-11-25

Hannon, Thomas R (Department: 3682)

Bearings

Rotary bearing

Antifriction bearing

C324S174000

Reexamination Certificate

active

07455459

ABSTRACT:
An oil lubricated rotating hub (14) and stationary spindle (12) assembly includes an oil bath seal (16, 16′) for establishing a dynamic sealing interface between the hub (14) and spindle (12). A wheel sensor assembly includes a variable reluctance senor (54) targeted at an encoder ring (56, 56′) which is integrated into the oil bath seal (16, 16′). The encoder ring (56, 56′) is of the permanent magnet type including a plurality of magnetically polarized sectors alternating between North and South polarities. The use of an encoder style target (56, 56′) in combination with a variable reluctance sensor (54) enables improved slow speed sensing with relatively large air gap spacing between the exposed (58, 58′) of the encoder ring (56, 56′) and the head of the VR sensor (54). Furthermore, the encoder ring (56, 56′) enables use of less expensive, lighter materials for the oil bath seal carrier (20, 20′).

REFERENCES:
patent: 3500091 (1970-03-01), Jones
patent: 4161120 (1979-07-01), Cloarec
patent: 5200697 (1993-04-01), Adler et al.
patent: 5476272 (1995-12-01), Hixson, II
patent: 5570013 (1996-10-01), Polinsky et al.
patent: 5648614 (1997-07-01), Martsfeld et al.
patent: 5668426 (1997-09-01), Lamert et al.
patent: 5695289 (1997-12-01), Ouchi et al.
patent: 5863124 (1999-01-01), Ouchi et al.
patent: 6170992 (2001-01-01), Angelo et al.
patent: 6186667 (2001-02-01), Nakamura et al.
patent: 6250637 (2001-06-01), Oricchio, Jr.
patent: 6328476 (2001-12-01), Nakamura et al.
patent: 6345825 (2002-02-01), Guth et al.
patent: 6573705 (2003-06-01), Tajima et al.
patent: 6637754 (2003-10-01), Ohtsuki et al.
patent: 6729623 (2004-05-01), Visconti
patent: 2001/0000713 (2001-05-01), Nakamura et al.
patent: 2002/0028032 (2002-03-01), Norimatsu
patent: 2004/0070151 (2004-04-01), Klenk et al.

Affiliated with

Also associated with

Rating

Oil bath encoder seal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Oil bath encoder seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil bath encoder seal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4037891