Abstract: An optical low pass filter or blur filter, and method of making the filters, using an article having a birefringent surface for refracting incoming light when used with an image sensor. The birefringent surface of the article, such as a film, is structured or tilted such that, when the blur filter is placed within an optical path between a lens and the image sensor, the birefringent surface causes refraction of a light signal in the optical path into multiple light signals each being incident upon different sub-pixels within the pixels in the image sensor to prevent or reduce artifacts, such as undesirable color moiré effects, in the resulting digital image. The structures on the surface have a variable pitch or angles. The variable pitch can include a periodic, aperiodic, or quasi-aperiodic pitch, to reduce diffractive artifacts in the resulting image.

Abstract: The present invention is directed an oriented, foamed article having an ink-receptive surface, and a method of making the article. The invention provides a printable substrate comprising at least one high melt-strength, oriented polypropylene foam layer having an ink-receptive surface. The high melt-strength polypropylene having a melt strength of of 25 to 60 cN at 190° C. The ink-receptive surface may comprise and oxidizing treatment, such as corona or flame-treatment of the foam surface, or may comprise an ink-receptive coating, such as a primer coating, on the foam surface.

Abstract: A telecommunications system (10) is provided that provides for telephone functions to be accessed through client computer system (14). A server computer system (16) provides telephony services, database services and access to E-mail, voice mail, video conferencing and facsimile systems. A graphical user interface 116 is presented to a user to allow the user to perform a large number of functions and to access databases of information associated with calling and called parties.

Abstract: A telecommunications system (10) is provided that provides for telephone functions to be accessed through client computer system (14). A server computer system (16) provides telephony services, database services and access to E-mail, voice mail, video conferencing and facsimile systems. A graphical user interface 116 is presented to a user to allow the user to perform a large number of functions and to access databases of information associated with calling and called parties.

Abstract: A telecommunications system (10) is provided that provides for telephone functions to be accessed through client computer system (14). A server computer system (16) provides telephony services, database services and access to E-mail, voice mail, video conferencing and facsimile systems. A graphical user interface 116 is presented to a user to allow the user to perform a large number of functions and to access databases of information associated with calling and called parties.

Abstract: A telecommunications system (10) is provided that provides for telephone functions to be accessed through client computer system (14). A server computer system (16) provides telephony services, database services and access to E-mail, voice mail, video conferencing and facsimile systems. A graphical user interface 116 is presented to a user to allow the user to perform a large number of functions and to access databases of information associated with calling and called parties.

Abstract: A telecommunications system (10) is provided that provides for telephone functions to be accessed through client computer system (14). A server computer system (16) provides telephony services, database services and access to E-mail, voice mail, video conferencing and facsimile systems. A graphical user interface 116 is presented to a user to allow the user to perform a large number of functions and to access databases of information associated with calling and called parties.

Abstract: A telecommunications system (10) is provided that provides for telephone functions to be accessed through client computer system (14). A server computer system (16) provides telephony services, database services and access to E-mail, voice mail, video conferencing and facsimile systems. A graphical user interface 116 is presented to a user to allow the user to perform a large number of functions and to access databases of information associated with calling and called parties.

Abstract: A telecommunications system (10) is provided that provides for telephone functions to be accessed through client computer system (14). A server computer system (16) provides telephony services, database services and access to E-mail, voice mail, video conferencing and facsimile systems. A graphical user interface 116 is presented to a user to allow the user to perform a large number of functions and to access databases of information associated with calling and called parties.

Abstract: A telecommunications system (10) is provided that provides for telephone functions to be accessed through client computer system (14). A server computer system (16) provides telephony services, database services and access to E-mail, voice mail, video conferencing and facsimile systems. A graphical user interface 116 is presented to a user to allow the user to perform a large number of functions and to access databases of information associated with calling and called parties.

Abstract: A burner throat is defined by a cage of tubes and is lined by fitting refractory tiles. A plurality of retaining means each having two joined parts, the outer part abutting the tubes and the inner part exerting an abutting force radially inwards on the tiles to retain them in position. In use the abutting force on the tiles can be varied to suit the design characteristics and environment, by varying the exposed length of a pin which threadedly mates in a complementary bore in each of the two parts. To further secure the tiles, a dowel is provided to mate in complementary bores formed in an adjacent side of abutting tiles.

Abstract: A cyclone furnace for a pulverized fuel boiler comprises a casing enclosing a cage of water tubes and having studs extending inwardly from each of the water tubes. Refractory tiles line the inside of the furnace, each fitted over a stud and secured in place thereby protecting the water tubes from the intense corrosion and abrasion. The furnace has three sections in which the design of the tiles vary. In the neck section the joints of the tiles are straight, in the barrel section they are curved and sympathetic to the gas flow and in the re-entrant throat the joints are shiplapped or rebated. Although the tiles may be generally rectangular in all sections, they are preferably hexagonal in the barrel.

Abstract: Polyamide conjugate filaments are prepared by a spin-stretch process wherein two nylon 66 polymers having different relative viscosities are melt spun at a spinning speed of at least 2286 mpm to form filaments in which the polymers are arranged in a side-by-side configuration along the length of the filaments. The filaments are then stretched in-line at a stretch ratio greater than 1.0 prior to their being collected with said stretch ratio being selected to provide filaments having a high level of high-load crimp and a low level of boiling water shrinkage. The filaments are particularly useful in the construction of stretch garments and, especially, ladies' leg hose and pantyhose.

Abstract: Polyester polymer is extruded at different speeds through groups of parallel closely spaced orifices at relatively high spinning speeds. The resulting filament have high and low shrinkage regions substantially regularly spaced apart along their length. A yarn including a number of these filaments spontaneously develops crimp when relaxed.

Abstract: Polyester polymer is extruded at different speeds through groups of parallel closely spaced orifices at relatively high spinning speeds. The resulting filament have high and low shrinkage regions substantially regularly spaced apart along their length. A yarn including a number of these filaments spontaneously develops crimp when relaxed.

Abstract: Polyamide conjugate filaments are prepared by a spinstretch process wherein two polyamides (e.g. two nylon 66 polymers) having different terminal velocity distances are melt spun at a spinning speed of at least 1829 mpm to form filaments in which the polymers are arranged in an eccentric configuration along the length of the filaments. The filaments are then stretched in-line at a stretch ratio greater than 1.0 prior to their being collected with the processing conditions and polyamides being selected to provide filaments having a high level of high-load crimp and a low level of boiling water shrinkage. The filaments are particularly useful in the construction of stretch garments and, especially, ladies' leg hose and pantyhose.

Abstract: Polyester polymer is extruded at different speeds through groups of parallel closely spaced orifices at relatively high spinning speeds. The resulting filament have high and low shrinkage regions substantially regularly spaced apart along their length. A yarn including a number of these filaments spontaneously develops crimp when relaxed.

Abstract: Polyethylene yarns having tenacities of at least 12 grams per denier are produced at commercially feasible spinning speeds by a process in which a high density polyethylene having a M.sub.n of at least 20,000 and a M.sub.w of less than 125,000 is extruded through a high temperature spinneret (220.degree.-335.degree. C.) to form yarns which are hot-drawn at a temperature between about 115.degree. and 132.degree. C. The yarns produced by this process are particularly useful as industrial cordage.

Abstract: Polyethylene yarns having tenacities of at least 12 grams per denier are produced at commercially feasible spinning speeds by a process in which a high density polyethylene having a M.sub.n of at least 20,000 and a M.sub.w of less than 125,000 is extruded through a high temperature spinneret (220.degree.-335.degree. C.) to form yarns which are hot-drawn at a temperature between about 115.degree. and 132.degree. C. The yarns produced by this process are particularly useful as industrial cordage.