Geometrical instruments – Straight-line light ray type – Alignment device
Patent
1996-09-18
1998-09-22
Fulton, Christopher W.
Geometrical instruments
Straight-line light ray type
Alignment device
3320318, 356155, G01B 11275
Patent
active
058096582
ABSTRACT:
An apparatus for determining the position and/or alignment of objects such as motor vehicle wheels, and including targets for attachment to the objects, a pair of optical sensing means such as television cameras for viewing the targets, an electronic processing means connected to the optical sensing means for processing data relating to images of the targets to determine position and/or alignment information, and a display means for displaying the position and/or alignment information. The optical sensing means view a target located on each object and form an image of each target. Electronic signals corresponding to each of the images are transferred to the electronic processing means which correlates the image signals of each of the targets with the true shape of each target. In so doing, the processing means relates the geometric characteristics and positional interrelationships of certain known elements of the target with the geometric characteristics and positional interrelationships of corresponding elements in the viewed images and calculates the position and/or alignment of the objects to which the targets are attached.
REFERENCES:
patent: 2292969 (1942-08-01), Peters
patent: 3288020 (1966-11-01), Lill
patent: 3501240 (1970-03-01), Haynes
patent: 5274433 (1993-12-01), Madey et al.
patent: 5535522 (1996-07-01), Jackson
Glickman Steve L.
Jackson David A.
Fulton Christopher W.
Hamrick Claude A.S.
Snap-on Technologies, Inc.
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