Apparatus for sensing the absolute-value angle of a shaft

Details Apparatus for sensing the absolute-value angle of a shaft Apparatus for sensing the absolute-value angle of a shaft

2007-11-06

2007-11-06

Lefkowitz, Edward (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207210

Reexamination Certificate

active

10671909

ABSTRACT:
An apparatus serves to sense the absolute value of the rotational position of a shaft (14). The apparatus has a first single-turn rotary encoder (30) that is arranged at one end (20) of the shaft (14) and is arranged to sense the latter's rotational position within a single shaft revolution. Also provided are: a multi-turn rotary encoder unit which senses the number of revolutions of the shaft (14) and which comprises a reduction gear linkage (18); a rotary element (42), driven by the output of the linkage, that is oriented as an imaginary continuation of the shaft (14) and coaxially therewith; and a second single-turn rotary encoder (48) which is arranged to sense the rotational position of the rotary element (42) within a single revolution. The reduction gear linkage (18) surrounds the shaft (14), and its output element (38) is connected, via a connecting member (40), to said rotary element (42) around the first single-turn rotary encoder (30). An unusually compact combination motor/encoder unit can thereby be achieved, suitable for installation in small spaces, e.g. a few centimeters wide.

REFERENCES:
patent: 3772675 (1973-11-01), Bose et al.
patent: 4853632 (1989-08-01), Nagano et al.
patent: 5646523 (1997-07-01), Kaiser et al.
patent: 5925953 (1999-07-01), Shibata
patent: 6542088 (2003-04-01), Bielski et al.
patent: 6733457 (2004-05-01), Flesch et al.
patent: 2002/0167309 (2002-11-01), Chaparala
patent: 2003/0056606 (2003-03-01), Matsuura et al.
patent: 2003/0112157 (2003-06-01), Strasser
patent: 2004/0100251 (2004-05-01), Lohberg
patent: 198 20 014 (1999-11-01), None
patent: 100 60 574 (2002-06-01), None
patent: WO 0210689 (2002-02-01), None
Webster's English Dictionary, online version. http://www.cs.chalmers.se/˜hallgren/wget.cgi?beyond, dated Aug. 4, 2005.
http://dictionary.reference.com/, dated Aug. 5, 2005.
Lamers et al., “A Miniature Multiturn Encoder Sets New Standards in Size,” in Heidenhain Info, vol. 8, Issue 1, pp. 1-6 (2002), publ. by Dr. Johannes Heidenhain GmbH of Trautrent, Germany. (Apparently an English translation of the foregoing German-language article).

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