Apparatus and method for measuring rotation angle

Details Apparatus and method for measuring rotation angle Apparatus and method for measuring rotation angle

1992-11-16

1994-02-22

Cuchlinski, Jr., William A.

Geometrical instruments

Miscellaneous

Light direction

3320314, 33534, G01B 7315

Patent

active

052876268

ABSTRACT:
An apparatus for measuring the rotation angle of an object includes a floating rotary support for the object. The rotary support is mounted on a frame so as to allow free lateral movement in X and Y coordinate directions. A cooperating two-point cursor and digitizer tablet are provided to identify X and Y coordinates for the object in a second, relatively rotated position. Specifically, either the cursor or the digitizer tablet is mounted to the rotary support while the other is held stationary on the frame. Additionally, a processor is provided for calculating the rotation angle of the object based upon the X and Y coordinates determined for the rotated position. A method for measuring the rotation angle is also disclosed and claimed.

REFERENCES:
patent: 3876831 (1975-04-01), Wickham et al.
patent: 4389793 (1983-06-01), Butler
patent: 4443951 (1984-04-01), Elsasser et al.
patent: 4690557 (1987-09-01), Wiklund
patent: 4897926 (1990-02-01), Altnether et al.
patent: 4924591 (1990-05-01), Brodu
patent: 5014227 (1991-05-01), Kling et al.

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