Rolling bearing unit with rotational speed sensor having a pair

Details Rolling bearing unit with rotational speed sensor having a pair Rolling bearing unit with rotational speed sensor having a pair

1995-08-29

1998-06-02

O'Shea, Sandra L.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

384448, G01P 348

Patent

active

057605769

ABSTRACT:
A rolling-bearing unit including a stationary ring, a rotating ring, an annular magnetic tone wheel having a cutout section with cutouts formed at equal intervals at a pitch, and a sensor facing the tone wheel. The sensor comprises a pair of annular or cylindrical permanent magnets arranged concentric with the tone wheel, an annular or cylindrical stator of magnetic material magnetically connected with the permanent magnets and provided concentric with the tone wheel, and an annular or cylindrical coil provided concentric with the tone wheel and proximate a central portion of the stator. Like magnetic poles of the pair of permanent magnets are magnetically connected to opposite ends of the stator. Peripheral faces of either the magnets or ring portions of the stator are formed with alternating recesses and protrusions with the same pitch as in the cutout section of the tone wheel and facing the cutout section of the tone wheel. The phase of the alternating recesses and protrusions of the peripheral face at one axial end of the stator relative to the cutout section is displaced by one half from the phase of the recesses and protrusions of the peripheral face at the other axial end of the stator relative to the cutout section.

REFERENCES:
patent: 3551712 (1970-12-01), Jones
patent: 4907445 (1990-03-01), Okumura
patent: 4970462 (1990-11-01), Richmond
patent: 5023546 (1991-06-01), Pawlak et al.
patent: 5023547 (1991-06-01), Pawlak et al.
patent: 5385410 (1995-01-01), Shirai et al.
patent: 5491407 (1996-02-01), Maxson et al.
patent: 5510708 (1996-04-01), Shirai et al.
patent: 5530344 (1996-06-01), Caillaut et al.

Affiliated with

Also associated with

Rating

Rolling bearing unit with rotational speed sensor having a pair does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rolling bearing unit with rotational speed sensor having a pair , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rolling bearing unit with rotational speed sensor having a pair will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1464234