Amp LLC

Amp Incorported

David Kahn

Raymond James Geckle

Thomas Francis Davis

Howard Richard Peiffer

Electrical contact device such as a terminal or a contact surface, has electrodeposited nickel thereon. The crystallites of the nickel are preferentially oriented with at least 50 percent of the volume {100} atomic planes substantially parallel to the contact surface. For many purposes, the preferentially oriented nickel surface is comparable to a gold plated contact surface.

Nickel plated contact surface having preferred crystallographic

A method for the production of an article suitable as a circuit element is formed by admixing vanadium dioxide or doped vanadium dioxide with a binder of vanadium pentoxide and phosphorus pentoxide then heating and shaping the admixture into a shape.

Method for manufacture of vanadium dioxide polyconductors

A polyconductor device is connected in series with a pair of current carrying contacts of a relay switch to delay the current surge through the contacts during the closure thereof. The polyconductor device has a negative temperature-resistance characteristic such that its electrical resistance value at temperatures below a predetermined transition temperature is at least several orders of magnitude larger than its resistance value at temperatures above the transition temperature. When the contacts are initially closed, only a small electric current passes through the polyconductor device which is in its high resistance state. After a predetermined time, the current heats the device to a critical temperature at which time polyconductor device switches to its low resistance state and the current flows essentially unimpeded thereby. During the heat-up time the contacts of the relay switch have completed bouncing and are in a stable, closed condition.

Relay contact protector

An article suitable as a circuit element is formed by admixing vanadium dioxide or doped vanadium dioxide with a binder of vanadium pentoxide and phosphorous pentoxide then heating and pressing the admixture into a shape.

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Harrisburg, PA, United States of America

David Kahn