System for measuring a motor vehicle wheel position

Details System for measuring a motor vehicle wheel position System for measuring a motor vehicle wheel position

1998-07-16

2001-03-06

Fulton, Christopher W. (Department: 2859)

Geometrical instruments

Gauge

Wheel

C033S203140, C033S203120

Reexamination Certificate

active

06195900

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a system for measuring a wheel position on a vehicle. In particular, it relates to the mounting of two rollers, in parallel, and rotating in a frame and onto which a motor vehicle wheel can be placed in a measuring stand,
2. Description of Related Art
A system from EP 0 199 913 has two rollers which are mounted parallel and rotating in a frame and onto which a motor vehicle wheel can be placed in a measuring arrangement, in particular for measuring its wheel position. Furthermore, a support device, having a roller body, for a floating mounting and/or movement of the frame in a horizontal place on a base body is provided. In connection therewith the roller bodies are arranged in fixed positions on the frame. The frame is supported via the roller bodies on a level horizontal base surface that is provided on the base body. Furthermore, this system has a motion-limiting device in the form of a slit, molded into the base body designed as a plate, and into which a swivel pin attached.
A system is also known from EP 0 376 037 A 1, in which the roller bodies may be designed as rolling balls and the frame may be supported on the base body by cylinder-actuated feet for surmounting the roller body mounting. Furthermore, this system has a lever connected with the frame, with which the frame, and the rollers mounted on it, can be removed from the base body for transport.
What is needed is a system of with simplified handling, which will, therefore, ensure flexibility of use.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide a system of coherent construction which can be used, portably in different measuring arrangement—in particular measuring stands—as a unit consisting of the frame, the rollers mounted herein, and the base body.
Another object of the present invention is to provide a system in which the two rollers are mounted rotating, and preferably designed as a rigid plate. The roller bodies are preferably designed as rolling balls that may be arranged in a ball cage attached to the frame, preferably on a circle. The center of the circle coincides with the center of the frame. In the initial condition, in which the frame can be stopped on the base body, this center is situated over the middle of the horizontal base surface on the base body. The ball rollers may also be arranged in separate mountings on the periphery of the circle. The ball rollers are preferably situated in embeddings on the bottom of the plate-shaped frame.
Furthermore, attached to the base body is a motion-limiting device which has one or more stop surfaces against which the frame can be rested to limit its horizontal motion. The motion-limiting device is preferably situated in the middle of the horizontal base surface and protrudes with a stop pin into a central opening on the frame. The motion-limiting device may also have a holding-down plate that has one or more stop surfaces by means of which a movement of the frame directed perpendicular to the horizontal base surface is limited.


REFERENCES:
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patent: 4631832 (1986-12-01), Schrammen et al.
patent: 5090235 (1992-02-01), Hirano et al.
patent: 5150515 (1992-09-01), Merrill et al.
patent: 5207001 (1993-05-01), Rossato
patent: 5257458 (1993-11-01), Koerner
patent: 5287626 (1994-02-01), Reich
patent: 5513438 (1996-05-01), Emmons
patent: 5569836 (1996-10-01), Hill
patent: 5870315 (1999-02-01), January
patent: 6018878 (2000-02-01), Fukuda et al.

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