Charles W Macmillan

US Patent:

39568300, May 18, 1976

Filed:

Aug 13, 1974

Appl. No.:

5/497070

Inventors:

Charles W. MacMillan - Rock Island IL

International Classification:

G01B 13195

US Classification:

33337

Abstract:

An instrument for measurement of the principal alignment angles of vehicle wheels, namely, camber, caster, steering axis inclination, and toe, and method pertaining to the latter; the instrument and attachments embodying novel features designed for simplicity of operation, high accuracy, improved resolution of readings, durability, and economy.

US Patent:

40633640, Dec 20, 1977

Filed:

May 14, 1976

Appl. No.:

5/686403

Inventors:

Charles W. MacMillan - Rock Island IL

International Classification:

G01B 524

US Classification:

3320314

Abstract:

This invention pertains to portable automotive wheel alignment equipment including full floating turning radius plates incorporating T F E -- fluorocarbon anti-friction means as a requisite for minimum height thereof, and coordinated wheel turning scales whereby accurate wheel swing angles are determined by parallel orientation of a substantially long indictor rod with angular lines of the scales over substantial length thereof, the accurate determination of said wheel swing angles being the basis for measurement of caster, steering axis inclination, and toe-out-on-turns of a pair of vehicle wheels.