Optics: measuring and testing – Angle measuring or angular axial alignment – Wheel alignment with photodetection
Patent
1994-01-12
1996-02-06
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
Wheel alignment with photodetection
3561413, 3320315, 3320318, 33288, G01B 1126, G01B 524
Patent
active
054899796
ABSTRACT:
A system for measuring the characteristic attitude angles of the wheels of an automobile frame utilizing optical sensors positioned on the wheels of the automobile frame to feed data to a central processor arranged to convert them into angular values, and four identical measurement devices fixed in mutually symmetrical arrangement to the wheels of the automobile frame in such a manner as to interact with the devices positioned on the adjacent wheels, each device comprising two identical measurement units positioned in mutually perpendicular vertical planes and each comprising angle measurement means positioned vertically and horizontally, having a single common reading unit, the angle measurement means having a light source directed towards a diaphragm, downstream of which there are located, in succession a cylindrical converging lens and a reading unit consisting of CCD-type optical sensors perpendicular to the axis of the lens, downstream of which there is a container for liquid of high refractive power through which the light plane originating from the source is refracted onto the optical sensors.
REFERENCES:
patent: 4383370 (1983-05-01), Van Blerk et al.
patent: 5018853 (1991-05-01), Hechel et al.
patent: 5208647 (1993-05-01), Longa et al.
Buczinski Stephen C.
Corghi S.p.A.
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