Abstract: A portable heat unit is described. The heat unit is useful as an oven, barbecue, griddle, etc. The heat unit comprises a body, a lid, a cooking support member such as a grill rack or oven plate and a brace. The body comprises a number of rectangular panels joined to form an open-ended polyhedron such as a box. The panel joints are movable, and preferably comprise piano hinges, thus rendering the body collapsible. When in use, the stand is rendered noncollapsible by installation of the brace. The brace comprises a rigid member which is placed between two panels to permit control of the burning of the fuel, heat flow, temperature and to define an opening through which the fuel and food may be conveniently accessed.

Abstract: An improved process for the homopolymerization and copolymerization of .alpha.-olefins utilizing highly dilute .alpha.-olefin feedstreams to effect high conversions and catalyst efficiencies in the production of non-ethylene copolymers. The instant invention is particularly adaptable to polymerizing the .alpha.-olefin content of commercially available refinery feedstreams such as Raffinate-2.

Abstract: A rugged, flatly folding, portable chafing dish assembly is comprised of a cover, food pan, water pan, collapsible stand and heat source. The collapsible stand is rectangular and is comprised of four rigid plates forming the sides of the rectangular stand which are rotatably coupled together by means of a flatly folding piano hinge. The hinge is integrally formed with the sides and can be disassembled for cleaning. The two lateral sides of the stand are identical and interchangeable, as are the two end sides. The rectangular stand is provided with apertures through the lateral and end sides, both for air access to create a heat draft for the burner source when placed within the stand, as well as access to the burners when the chafing dish assembly is assembled. A rigid rectangular tray extends the length of the stand and connects to the end sides along an access aperture edge thereby rendering the otherwise collapsible rectangular stand rigid.

Abstract: A rugged, flatly folding, portable chafing dish assembly is comprised of a cover, food pan, water pan, collapsible stand and heat source. The collapsible stand is rectangular and is comprised of four rigid plates forming the sides of the rectangular stand which are rotatably coupled together by means of a flatly folding piano hinge. The hinge is integrally formed with the sides and can be disassembled for cleaning. The two lateral sides of the stand are identical and interchangeable, as are the two end sides. The rectangular stand is provided with apertures through the lateral and end sides, both for air access to create a heat draft for the burner source when placed within the stand, as well as access to the burners when the chafing dish assembly is assembled. A rigid rectangular tray extends the length of the stand and connects to the end sides along an access aperture edge thereby rendering the otherwise collapsible rectangular stand rigid.

Abstract: Reduction of index undulation errors associated with helical gear teeth caused by the grinding process during the manufacture of the gears without degrading other gear accuracies (e.g. profile, tooth spacing) below levels required for precision (AGMA16 or DIN1) gears. A mold of the space between several gear teeth is obtained, with the mold having a length equal to or greater than the wavelength of the undulation error to be reduced. A microfinishing film is affixed to the mold and the mold is placed relative to a gear tooth so that the microfinishing film rests against a tooth surface having the undulation error. The grit size of the microfinishing film is such as to remove approximately 2 to 3 millionths of gear material with each pass through the teeth by the mold. Multiple passes are made by hand until the undulation error is reduced to an acceptable value. During the process the microfinishing film is replaced after approximately 3 or 4 passes and the process is repeated for each tooth of the gear.