Apparatus and method for aligning elements of a drive train of a

Details Apparatus and method for aligning elements of a drive train of a Apparatus and method for aligning elements of a drive train of a

1988-01-29

1989-07-04

Evans, F. L.

Optics: measuring and testing

Angle measuring or angular axial alignment

With screen

33288, 33293, G01B 1127

Patent

active

048446092

ABSTRACT:
The disclosure is of apparatus and method for detecting and correcting malalignment in the drive train of a vehicle, especially a heavy-duty, load-carrying vehicle, which drive train comprises a drive shaft articulated by a universal joint and a rear end comprising a transverse axle adapted to drive wheels. Laser beam targets are affixed to the drive shaft in such an alignment that, when a laser beam is projected through them, deviations from the normal are revealed. The targets are semi-transparent members having opaque cross hairs thereon which are adjustable up and down and are mounted so that the vertical cross hairs are in line with a vertical diameter of the drive shaft. A prism-bearing target is affixed to the differential of the vehicle in alignment with the laser beam. The prism is adapted to refract the laser beam at 90.degree. and is mounted so that it can be set either at 0.degree. or 180.degree. and positioned so that the refracted beam, in one position, is in position to impinge on one wheel, brakedrum, or the like and, in the other position, on the other wheel, whereby any deviation from the normal becomes apparent from detected asymmetry and can be corrected.

REFERENCES:
patent: 3962796 (1976-06-01), Johnston

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