ii New Patents

own side supports are arranged at the edge of the metal backed laminate web, upstream of the saw head.

4809423

MAKING SEAMLESS STEEL PIPES

Ulrich Petersen, D 4000 Duesseldorf, Federal Republic Of Germany

4805686

AN A P P A R A T U S FOR F ORM ING A L U M I N U M - T R A N S I T I O N

METAL ALLOYS HAVING HIGH STRENGTH AT ELEVATED

T E M P E R A T U R E S

A method of forming seamless metal tubing and pipes of large diameter in excess of 500 mm dia- meter. A thickwalled hollow body is made by continuous casting. Rolling the continuously cast hollow body over a mandrel in an oblique rolling mill to the desired weight per unit length. Radially expanding the rolled hollow body while maintaining its weight per unit length.

David J Skinner, Paul Chipko, Kenj Okazaki as- signed to Allied-Signal Inc

The invention provides an aluminum based al- loy consisting essentially of the formula Albal- FeaXb, wherein X is at least one element selected from the group consisting of Zn, Co, Ni, Cr, Mo, V, Zr, Ti, Y and Ce, a ranges from about 7-15 wt. %, b ranges from about 2-10 wt. %/0 and the balance is aluminum. The alloy has a pre- dominately microeutectic microstructure, and is produced by a method and apparatus for for- ming rapidly solidified metal within an ambient atmosphere. Generally stated, the apparatus in- cludes a moving casting surface which has a quenching region for solidifying molten metal thereon. A reservoir holds molten metal and has orifice means for depositing a stream of molten metal onto the casting surface quenching region. A heating mechanism heats the molten metal contained within the reservoir, and a gas source provides a non-reactive gas atmosphere at the quenching region to minimize oxidation of the deposited metal. A conditioning mechanism dis- rupts a moving gas boundary layer carried along by the moving casting surface to minimize dist- urbances of the molten metal stream that would inhibit quenching of the molten metal on the casting surface at a quench rate of at least about 106 degrees C./sec. Particles composed of the alloys of the invention can be heated in a vacuum and compacted to form a consolidated metal article have high strength and good ductility at both room temperature and at elevated tem- peratures of about 350 degrees C. The con- solidated article is composed of an aluminum solid solution phase containing a substantially uniform distribution of dispersed intermetallic phase precipitates therein. These precipitates are fine intermetallics measuring less than about 100 nm in all dimenisons thereof.

4810167

C O M P O S I T E AIRCRAFT PROPELLER BLADE

Mark W Spoltman, Richard Bowerman, Richard Edinger assigned to Hartzell Propeller Inc

A generally flat core of foam material extends outwardly from a wedge-shaped metal base plug, and the core is covered with overlapping plies of resin-bonded plastics materials having unidirec- tional fibers. The plies are covered by outer layers or skins of resin-bonded woven fabric plastics materials. The fibers of the inner plies are orientated at positive and negative acute angles relative to the longitudinal axis of the blade to provide the blade with predetermined torsional stiffness, and the fibers of the outer plies extend generally parallel to the axis and wrap around the base plug in an interleaving manner to provide high stiffness and strength to bending forces. Some of the plies extending around the base plug receive metal shell ele- ments, and the shell elements engage propeller hub lip portions which cooperate to define an under-cut recess and clamp the plies to the base plug.

4810288

M E T H O D AND A P P A R A T U S FOR MAKING METAL P O W D E R

Christopher M Baszczuk, Bruce A Quimby as- signed to United Technologies Corporation

An apparatus and method for forming essen- tially contaminant free metal powders of varying