Patent Number: 6,305,234

Title: Absolute encoder

Abstract: A non-contact absolute encoder for determining the absolute position of a movable workpiece includes a movable transducer element adapted to be coupled to the workpiece, and a sensor positioned proximate the transducer element. The encoder may be of either the rotary or linear type. The transducer element includes a characteristic profile that varies substantially continuously as a function of the transducer position. The characteristic profile may be magnetic, optical, or some other characteristic that is measurable by a non-contact sensor and is representative of transducer position.

Inventors: Thies; Edward L. (Niles, MI), Dowis; William F. (Huntington Beach, CA)

Assignee: Thies; Edward L.

International Classification: G01D 5/12 (20060101); G01D 5/14 (20060101); G01D 5/26 (20060101); G01D 5/347 (20060101); G01B 007/00 (); G01B 011/00 (); G01B 021/00 ()

Expiration Date: 10/23/2018