Apparatus for determining shape of contact patch and contact pre

Details Apparatus for determining shape of contact patch and contact pre Apparatus for determining shape of contact patch and contact pre

1991-01-28

1992-03-03

Woodiel, Donald O.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

356 71, G01M 1702

Patent

active

050921665

ABSTRACT:
An apparatus for determining the shape of contact patch and the contact pressure of a tire comprises a contact member made of a transparent material, a pressing unit for pressing the outer peripheral surface of the tire against the contact member, a sheet having elastic projections arranged regularly on one surface thereof and uniformly distributed thereover, and an observation device for observing through the contact member the projections as deformed when the tire is pressed against the contact member with the sheet interposed therebetween and with the projections thereof facing the contact member. The shape of contact patch and contact pressure of the tire can be determined by observing deformed projections by the device.

REFERENCES:
patent: 3865488 (1975-02-01), Del Rio
patent: 4331030 (1982-05-01), Webster
patent: 4878712 (1975-04-01), Chapin
Spinner, "An Apparatus for Determining the Actual Footprint Area of Tires", Material Research and Standards, vol. 10, No. 2, pp. 20-23, Feb. 1970.

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