Geometrical instruments – Straight-line light ray type – Alignment device
Patent
1981-10-07
1983-05-17
Stearns, Richard R.
Geometrical instruments
Straight-line light ray type
Alignment device
33 1CC, 33181AT, 33185V, 33228, G01C 1500, G01B 1103
Patent
active
043833730
ABSTRACT:
In order to determine the correct relative positions of marker tips on an adjustable jig used for chassis and body repairs of a damaged automotive vehicle, a three-dimensional representation of the spatial distribution of characteristic points of the vehicular structure is created by means of two projectors emitting pairs of intersecting light rays with the aid of mostly opaque slides bearing conjugate patterns of transparent dots. In a presetting operation the projectors are so oriented that certain--preferably distinctly colored--light rays traversing their slides intersect at fixed spots on a stationary wall against which the jig is subsequently placed for an adjustment of its markers until their tips coincide with the intersections of respective pairs of preferably distinctively colored orientation rays. The slides may also bear projectable legends indicating the type of vehicle to which they pertain.
REFERENCES:
patent: 1428861 (1922-09-01), Schultz
patent: 1551393 (1925-08-01), Hewlett et al.
patent: 2644361 (1953-07-01), Birdsall
patent: 2659824 (1953-11-01), Burnham
patent: 3117480 (1964-01-01), Peddinghaus
patent: 3130633 (1964-04-01), Rantsch
patent: 3633010 (1972-01-01), Svetlichny
Ross Karl F.
Stearns Richard R.
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