Hutchinson, Sa

Hutchinson Worldwide

Hutshinson

Hutchinson

Bernard Branchereau

Patrick Fayaud

Displacement encoder for a moving shaft, comprising a sleeve intended to be fitted onto the shaft and at least one permanent magnet forming at least one polarized magnetic mark. An elastomer layer lies between the permanent magnet and the sleeve. This elastomer layer is adhesively bonded to the permanent magnet and to the sleeve. The invention also relates to a device for a moving shaft comprising such an encoder and to the method of manufacturing the encoder.

Shaft encoder, device comprising such an encoder and method of manufacturing such an encoder

The invention relates to displacement encoder for a movable shaft, comprising a sleeve () which is intended to be fixed in rotation to the shaft () and an encoding element () which is made from magnetizable polymer and which is solidly connected to the sleeve, said encoding element being equipped with an encoding zone () having at least one polarized mark. The aforementioned encoding zone of the encoding element is covered with a protective layer () which is made from a polymer having a surface abrasion resistance greater than that of the magnetizable polymer. The invention also relates to a device comprising one such encoder and to a production method thereof.

Encoder for shaft device comprising one such encoder and production method thereof

A dynamic seal for a rotary shaft, the seal comprising a sleeve for being constrained in rotation on the shaft and an annular lip of polymer having a low coefficient of friction to come into sliding rotary contact with a stationary casing surrounding said shaft so that the dynamic seal provides sealing between said shaft and said casing. An annular encoder element of magnetizable polymer and presenting at least one polarized mark is secured to said sleeve and forms a support for said lip. The invention also provides a device including such a seal, and a method of fabricating the seal.

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