Abstract: A device for geometric measurement and inspection of wheeled vehicles includes structure for determining physical parameters usable for computation of the angles and distances characteristic of the vehicles to be inspected. Each device for determining a physical parameter includes at least one substantially horizontal light beam emitted by a light source, at least one image forming device of this source on an optical linear detector, and at least one optical linear detector, preferably of the CCD or PSD type, adapted to receive at least two substantially horizontal light beams from at least two separate sources.

Abstract: A device for inspecting the geometry of a vehicle, in which the appearance of an element fixed to a wheel rim of the vehicle is caused to vary as a function of the angle of view at which it is seen, without thereby producing a perspective image of this element. The variation of appearance is caused by moire gratings. The device is useful for the geometric inspection of wheeled vehicles.

Abstract: A device for the detection and measurement of the position of a turning body (3) such as a wheel of an automotive vehicle, adapted to be driven in rotation, comprises a source of illumination (8) adapted to illuminate selectively the vicinity of the position to be detected and at least one detector (9) of the luminous intensity receiving the radiation of the illuminated position so as to determine the geometric parameter representative of the position (15) to be detected. Use in balancing turning bodies, particularly automotive vehicle wheels.

Abstract: A device for rapid securement on a screw-threaded drive shaft, such as a wheel balancer, includes a body 1 with at least one gripping handle 2. The body 1 is closed by a cover 3 and contains a resilient return spring 7 of a rotatable actuating member 8 adapted to radially displace two blocks 13 with screw-threaded combs for engaging the drive shaft. The actuating member and the two blocks are interconnected by a mounting with the aid of a groove 14 and a pin 15. Use for the rapid securement of bodies to be balanced on a balancer, e.g. a vehicle wheel.

Abstract: The geometric inspection of wheeled vehicles is carried out by at least two casings facing each other and each comprising at least one light source and at least one optical receiver located behind a device for defining an image. The image-defining device is sensitive to radiation from the light source of the other opposite casing. The light source (12) of a first casing defines with the optical receiver (13) of a second opposite casing a first active spatial zone (A). The light source (8) of that second casing defines with the optical receiver (14) of the first casing a second active spatial zone (B). The two active spatial zones (A, B) are separated by a space (C) of predetermined width (d) to permit simultaneous operation of the two casings without mutual interference.