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US Patent: 4,168,909
Optical Toe Gauge with Angled Screens for Vehicle Wheels
Patentees:
Raymond G. Knudsen, estate of (deceased) - Kenosha, WI
James W. Nelson - Union Grove, WI

USPTO Classifications:
33/203.18, 356/155

Tool Categories:

Assignees:
Snap-On Tools Corp. - Kenosha, WI

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Nov. 10, 1977
Granted: Sep. 25, 1979

Patent Pictures:
USPTO pdf tiff
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Snap-On Tools Company History
Description:
Vogel, Dithmar, Stotland, Stratman & Levy - patent attorneys

E. M. MIller, executor of Mr. Knudsen's estate.

Abstract

An optical toe gauge for measuring the toe-in and toe-out of vehicle wheels includes a pair of support arms respectively mounted from the wheel hubs and carrying light beam projector assemblies at the forward ends thereof so that the direction of each beam is dependent upon the toe of the associated wheel. Each arm also carries therebelow a screen on which is projected the beam from the opposite projector, each screen being disposed at approximately a 45.degree. angle to the corresponding wheel axis and facing inwardly between the wheels, each screen having toe increment lines thereon with enlarged spacing therebetween to facilitate reading of the toe measurement on the screen.

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