Other

Celanese Gmbh

John M Rhodes

Ilmar L Kalnin

Paul E McMahon

George J Breckenridge

John P Riggs

Andrew H DiEdwardo

Sang N Kim

An exercise assembly adapted to build endurance in dogs by allowing them to maintain a continuous running mode. A support frame serves to movably support a treadmill and a treadway mounted thereon wherein a plurality of independent, spaced apart roller assemblies support and allow the continuous linear movement of the closed configuration treadmill. The dog, running on the treadmill is prompted to continue his running motion by attempting to reach a bait animal maintained in a bait cage out of the reach of the dog being exercised.

Exercise assembly for a dog

An improved continuous hot gas surface modification process for carbon fibers is provided. The carbon fibers undergoing such processing are passed for a relatively brief residence time through a surface treatment zone to which continuously is fed nitrogen dioxide and air under conditions which have been found to produce a surprisingly effective surface modification. The resulting carbon fibers exhibit a significantly enhanced surface area and an improved ability to bond to a resinous matrix material while retaining a substantial portion of the tensile strength originally exhibited. When incorporated in a resinous matrix material, a fiber reinforced composite article of enhanced interlaminar shear strength is formed.

Process for the surface modification of carbon fibers

An improved process for the relatively rapid thermal stabilization of a multifilamentary acrylic fibrous material in the substantial absence of filament coalescence is provided. The fibrous material is initially contacted with a solution of hydroxylamine (as described), and subsequently with a solution of ammonium permanganate, calcium permanganate, magnesium permanganate, or mixtures thereof (as described). The resulting fibrous material which possesses a chemically altered structure is heated in an oxygen-containing atmosphere until a thermally stabilized acrylic fibrous material is formed which is capable of undergoing carbonization and is non-burning when subjected to an ordinary match flame.

Process for the production of stabilized acrylic fibers which are

Plastic screens having the bending modulus, thinness, toughness, strength and chemical resistance which are suitable for use in rotary screen printing processes, are described. Methods for precision fabrication of such plastic rotary printing screens, having a wall thickness of about 0.002-0.025 inch, a circumference of 8 to 78 inches and a longitudinal length of about 48-200 inches, are provided.

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Summit, NJ, United States of America

John M Rhodes