Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent
1984-06-21
1986-10-07
Buczinski, S. C.
Optics: measuring and testing
Angle measuring or angular axial alignment
With photodetection remote from measured angle
3320317, 3320318, 33288, 356155, G01B 1126, G01B 524, G01B 525
Patent
active
046156186
ABSTRACT:
Apparatus is provided for determining the relationship between a vehicle's thrust line and the vehicle's body center line. A movable light source is located externally of and independent of the vehicle and serves to establish a pair of reference light beams falling in parallel planes and which are spaced apart sufficient to permit a vehicle to be positioned longitudinally therebetween. The vehicle's thrust direction is determined by mounting sensors on the nonsteerable wheels so as to extend transversely away from the vehicle's body to intercept the light beams, together with circuitry for providing output indications dependent upon the location of light interception and which indications are representative of the vehicle thrust direction. The body center line is determined by employing targets which are mounted to body sides of the vehicle to intercept reference light beams. The targets on each side include a first slotted target which is positioned near one end of the vehicle to permit passage therethrough of the reference light beam and a second scaled target positioned rearwardly of the first target so as to intercept the light beam passed by the first target. The light source is moved until the scale readings of both sides of the vehicle are equal, then the body center line is defined as an axis midway between the two reference light beams.
REFERENCES:
patent: 3963352 (1976-06-01), Rishovd et al.
patent: 4338027 (1982-07-01), Eck
Bailey Michael P.
Brooks Raymond G.
Frank, Jr. James R.
Johnson Justin J. J.
Maholm Mark B.
Buczinski S. C.
JVI Laser Systems Inc.
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