Chrysler Corporation

Peter Polasek

Randy L Dickerman

Earl J Holdren

Daryl J Trate

Thaddeus W Krzys, Jr

A fixture for testing the resiliency of vehicle bulb-type weatherstripping before and after the weatherstripping has been heat treated includes a base and a holder movably positioned on the base for holding the weatherstripping. A ram is movably disposed on the base opposite the holder for motion between a compressed position, wherein the ram abuts the weatherstripping to compress the weatherstripping, and a release position, wherein the ram is distanced from the weatherstripping. A laser device is positioned for directing laser light onto the weatherstripping as it recovers from a compressed configuration to a relaxed configuration. As the weatherstripping recovers, the laser light is reflected off of the weatherstripping, detected, and a detection voltage is correlated to a distanced moved by the weatherstripping as a function of time. Thereby, a measure of the resiliency and recoverability of the weatherstripping is provided.

Weatherstrip resiliency test fixture

A digital readout test probe comprises: a dual in-line pin, clip-on-type connector for connection to a dual in-line pin integrated circuit; a housing containing a single digit decimal readout display; and a converter circuit whose output drives the readout and whose input is coupled with the clip-on connector by means of color coded lead wires. The display and converter circuit are energized from a separate power supply. When the connector is operatively connected with an integrated circuit, signals from selected terminal pins of the integrated circuit are supplied through the lead wires to the converter circuit. The selected terminal pins provide a binary coded decimal signal and the display shows the decimal value of the binary coded decimal signal so that the user of the probe does not have to decode the binary coded decimal signal into decimal form. The clip-type connector comprises a plurality of conductors each of which conducts a signal from a corresponding terminal pin of the integrated circuit. Each lead wire is uniquely color coded according to the significance of the particular binary digit (bit) input of the converter circuit to which one end of it is fixedly connected. The other end of each lead wire terminates in a hollow pin terminal which may be manually engaged with, and disengaged from, any of the conductors of the clip-type connector whereby the test probe may be conveniently programmed for use with any of the large number of available dual in-line pin integrated circuits.

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Grosse Pointe, MI, United States of America

Peter Polasek