Rotary position transducer

Details Rotary position transducer Rotary position transducer

2007-12-19

2009-06-02

Fulton, Christopher W (Department: 2841)

Geometrical instruments

Miscellaneous

Light direction

C033S501130

Reexamination Certificate

active

07540095

ABSTRACT:
A rotary position transducer has a housing, a rotor, which is connected to a drive shaft to be measured and projects into the housing so as to rotate with it and the angular position of which within one revolution is measured, and a multi-turn unit that is mounted in the housing and measures the number of revolutions of the rotor. The multi-turn unit is coupled with the rotor by way of a gear wheel gear mechanism, which has a driving spur wheel (10) connected to the rotor, and a driven spur wheel (12) of the multi-turn unit. In the case of one of the spur wheels (10), the head of every second tooth (16) is shortened up to the reference circle. In the case of the other spur wheel (12), the base of every second gap (18) between teeth is filled up to the reference circle. The spur wheels (10, 12) are helical-geared, wherein the modulus and the helix angle (α) of the helical gearing are determined in such a manner that at least one tooth (16) is always in engagement.

REFERENCES:
patent: 5016471 (1991-05-01), Och
patent: 7040025 (2006-05-01), Inoue
patent: 7447580 (2008-11-01), Lee
patent: 7458164 (2008-12-01), Perret et al.
patent: 100 60 574 (2002-06-01), None
patent: 101 58 223 (2003-06-01), None
patent: 2 224 554 (1990-05-01), None

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