Optics: measuring and testing – Angle measuring or angular axial alignment – With screen
Patent
1978-06-08
1981-02-10
Sacher, Paul A.
Optics: measuring and testing
Angle measuring or angular axial alignment
With screen
350 61, 356153, G01B 11275, G02B 1117
Patent
active
042498244
ABSTRACT:
The system of the present invention provides means for quick and accurate measurement of various wheel alignment parameters of motor vehicles by the use of reflected light beams. A laser source mounted near the front end of the vehicle provides a pair of light beams directed 180 degrees apart across the front end of the vehicle. Each of the beams is reflected along the side of the vehicle by a roof mirror set mounted near each front corner of the vehicle. The mirror sets each deflect a beam through a constant net angle of 90 degrees for a wide range of angles of incident light so that the laser source can be rotated to quickly provide parallel beams which are aligned substantially parallel to the sides of the vehicle. These mirror sets also provide stable beams and present small movements thereof from affecting the accuracy of the measurements being made. A pair of relay roof mirror sets, positioned adjacent the wheels whose alignment parameters are being measured, each reflects the beams onto flat mirrors pendulously mounted on the wheels. Each flat mirror returns the beam to the associated relay roof mirror set which, in turn, reflects the beam back to a grid-like light responsive target. The position of the return beam on the target causes the target to provide electronic output signals to logic circuitry which calculates the camber, caster and toe angle of the associated vehicle wheel.
REFERENCES:
patent: 2213605 (1940-09-01), Mathieu
patent: 2700319 (1955-01-01), Carr
patent: 3363504 (1968-01-01), Lill
patent: 3501240 (1970-03-01), Haynes
patent: 3603688 (1971-09-01), Smith-Vaniz
patent: 3630623 (1971-12-01), Schirmer
patent: 3709609 (1973-01-01), Spengler et al.
patent: 3724950 (1973-04-01), Niss
patent: 3734627 (1973-05-01), Edwards
patent: 3758213 (1973-09-01), MacPherson et al.
patent: 4068955 (1978-01-01), Bodlaj
Johnson, B. K., "Optics & Optical Instruments", Dover Pub. 1960, pp. 6-8.
Chang Andrew K.
Muray Julius J.
Wiederrich James L.
FMC Corporation
Kelly Robert S.
Megley Richard B.
Punter Wm. H.
Sacher Paul A.
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