Aluminum Company of America

Other

William A Anderson

William D Vernam

John Knox McBride

Arvil Burke McKee

George D Wilkinson

Ralph W Rogers, Jr

Edward W Anderson

Testable sealed and/or self-diagnosing electromagnetic or solid-state relays simplify troubleshooting of electrical circuits. The testable relay comprises a relay housing with terminals adapted to connect to a circuit and an opposing top wall with testable terminals formed as projections being flush with or extending from the top wall and being exposed for testing the relay by applying a multimeter device. A self-diagnosing relay comprises a relay housing with terminals adapted to connect to a circuit, and at least two light-emitting diodes (LEDs). One of the LED indicates the relay is energized, and another LED light is a diagnostic LED and indicates if the relay is damaged.

Testable sealed relay and self-diagnosing relay

Aluminum brazing sheet is produced from a composite assembly comprising an ingot of aluminum alloy, at least one side of the ingot provided with a layer of an aluminum brazing alloy consisting essentially of not greater than 0.35 wt.% magnesium and 6.0 to 13.0 wt.% silicon, the remainder aluminum and incidental impurities. A layer of aluminum for rolling purposes is provided on at least one of said ingot and said brazing layer, the rolling layer being substantially free of elemental silicon and consisting essentially of 0.2 wt.% Cu max., 0.4 wt.% Fe max., 0.05 wt.% max. for both Mn and Ti, up to 1.0 wt.% Mg, the remainder aluminum and incidental impurities. The composite assembly is hot bonded by rolling in a reversing mill and thereafter formed into brazing sheet in a continuous rolling mill.

Production of aluminum brazing sheet

Aluminum brazing sheet is produced by providing a composite assembly comprising an ingot of aluminum alloy and a layer of an aluminum brazing alloy on at least one side of the ingot. Provided on both sides of the composite assembly is a second layer of aluminum alloy substantially free of eutectic or elemental silicon. The composite assembly and the second layer are hot bonded and formed into brazing sheet by steps including hot rolling in a reversing mill followed by hot rolling in a continuous mill.

An improved container featuring an aluminum end or panel having a tear open portion defined by score lines provided in an aluminum composite having a core composed of an aluminum alloy consisting essentially of 1 to 7% of one or more elements selected of the group of up to 3% copper, up to 4% magnesium and up to 1.5% manganese, the balance essentially aluminum and an aluminum cladding layer consisting of aluminum and, optionally, some amount of zinc but less than 1% with the cladding facing the contents of the container. The solution potential of the core and cladding are controlled in order to achieve the desired protection. A thermal treatment can be employed to control the electrochemical performance of certain composites.

Method of making a container including an aluminum panel having a

Container including an aluminum panel having a portion removable by

An improved automotive bumper or bumper back-up bar is provided in an aluminum alloy containing selected amounts of zinc and magnesium with a small amount of zirconium and copper, with small amounts of chromium and manganese being optional but preferred. Copper is included to enhance strength. The alloy can contain 5.5-9% Zn, 0.8-2% Mg, 0.11-0.25% Cu, 0.05-0.2% Zr, and preferably 0.05-0.35% Mn or 0.05-0.25% Cr, or both. The alloy products contemplated include shaped sheet and extrusion bumper products. The improved method contemplates homogenization at a controlled temperature and control of subsequent thermal exposure to, in cooperation with the homogenization, assure good performance from the standpoint of both strength and resistance to stress corrosion cracking.

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Pittsburgh, PA, United States of America

William A Anderson