Encoder element for a rolling-contact bearing equipped with an i

Details Encoder element for a rolling-contact bearing equipped with an i Encoder element for a rolling-contact bearing equipped with an i

1994-09-27

1996-06-25

O'Shea, Sandra L.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

384448, 277 80, G01P 3487, F16C 4104, F21B 3302

Patent

active

055303447

ABSTRACT:
The encoder element (8) for a rolling-contact bearing equipped with an information sensor assembly is rendered integral with a rotating race of the bearing and interacts with a sensor of the said information sensor assembly in order to detect the speed of rotation of the bearing. It comprises an annular target (13) made of ferromagnetic material provided with a cylindrical bearing surface (13a) for mounting on the rotating race of the bearing and with a flat disc-shaped radial part (13b) with windows (13c) or slots of identical size and uniformly distributed along the circular path, and an axially magnetized bipolar ring (14) provided with axial crenellations (14b) which are uniformly and circumferentially distributed and which penetrate axially into the said windows or slots in the target.

REFERENCES:
patent: 4795278 (1989-11-01), Hayashi
patent: 4850722 (1989-07-01), Bayer
patent: 4948277 (1990-08-01), Alff
patent: 4969753 (1990-11-01), Kato et al.
patent: 5026178 (1991-06-01), Ballhaus
patent: 5166611 (1992-11-01), Kujawa, Jr. et al.
patent: 5309094 (1994-05-01), Rigaux et al.
patent: 5325055 (1994-06-01), Geringer

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