초록 ▼

An apparatus and method for measuring the angle between two members is disclosed. A wheel aligner has a projector mounted on each front wheel of the vehicle to project a beam toward the other projector. Each projector has a detector to sense the presence of a beam from the opposite projector. Each p

An apparatus and method for measuring the angle between two members is disclosed. A wheel aligner has a projector mounted on each front wheel of the vehicle to project a beam toward the other projector. Each projector has a detector to sense the presence of a beam from the opposite projector. Each projector has a plurality of light sources to project a plurality of beams, one at a time, in a diverging pattern. Circuitry is provided to identify the beam which is detected, at any angle of toe of the wheel, to thereby give the angle of toe.

대표청구항 ▼

Angle measuring apparatus to determine the angle between reference axes on two members comprising a plurality of energy sources mounted on one of said members in fixed relation to the reference axis of said one member to cast beams in a predetermined diverging pattern from a defined plane toward the

Angle measuring apparatus to determine the angle between reference axes on two members comprising a plurality of energy sources mounted on one of said members in fixed relation to the reference axis of said one member to cast beams in a predetermined diverging pattern from a defined plane toward the other member, a detector mounted on said other member in a predetermined position thereon relative to said reference axis thereof, the relative widths of the beams at the detector and the spacing thereof being such that at least two beams will strike the detector in a given position of the two members within the measuring range of the apparatus, and means to energize said sources sequentially until the beams from at least two of said sources strike said detector.