Abstract: A mobile self-contained self-powered station having a plurality of vessels delivers a pressurized fluid to a receiving tank (e.g., a fuel tank of a hydrogen-powered vehicle) without using mechanical compression, external electric power, or other external utilities. The station includes first and second vessels, a conduit in fluid communication with the receiving tank and each of the first and second vessels, means for transferring at least a portion of a quantity of the pressurized fluid from the first vessel to the receiving tank, means for measuring continuously a pressure differential between the increasing pressure in the receiving tank and the decreasing pressure in the first vessel, means for discontinuing the transfer from the first vessel when a predetermined limit value is reached, and means for transferring at least a portion of a quantity of the pressurized fluid from the second vessel to the receiving tank.

Abstract: A mobile self-contained self-powered station having a plurality of vessels delivers a pressurized fluid to a receiving tank (e.g., a fuel tank of a hydrogen-powered vehicle) without using mechanical compression, external electric power, or other external utilities. The station includes first and second vessels, a conduit in fluid communication with the receiving tank and each of the first and second vessels, means for transferring at least a portion of a quantity of the pressurized fluid from the first vessel to the receiving tank, means for measuring continuously a pressure differential between the increasing pressure in the receiving tank and the decreasing pressure in the first vessel, means for discontinuing the transfer from the first vessel when a predetermined limit value is reached, and means for transferring at least a portion of a quantity of the pressurized fluid from the second vessel to the receiving tank.

Abstract: A mobile self-contained self-powered station having a plurality of vessels delivers a pressurized fluid to a receiving tank (e.g., a fuel tank of a hydrogen-powered vehicle) without using mechanical compression, external electric power, or other external utilities. The station includes first and second vessels, a conduit in fluid communication with the receiving tank and each of the first and second vessels, means for transferring at least a portion of a quantity of the pressurized fluid from the first vessel to the receiving tank, means for measuring continuously a pressure differential between the increasing pressure in the receiving tank and the decreasing pressure in the first vessel, means for discontinuing the transfer from the first vessel when a predetermined limit value is reached, and means for transferring at least a portion of a quantity of the pressurized fluid from the second vessel to the receiving tank.

Abstract: Method for detecting and controlling the concentration of a flammable gas in an enclosed space. The method includes providing a source of flammable gas to an enclosed space, wherein the enclosed space includes a device which consumes or stores the flammable gas, and wherein the enclosed space further includes unclassified electrical equipment and an electrical power supply to the unclassified electrical equipment. The atmosphere in the enclosed space is analyzed to determine the concentration of the flammable gas therein and this concentration is compared to a first reference concentration and a second reference concentration that is less than the first reference concentration. When the concentration of the flammable gas in the enclosed space is between the first and second reference concentrations, the source of flammable gas to the enclosed space is terminated and the enclosed space is ventilated.

Abstract: An automatic picture taking system has a housing which may be in the form of a booth. The housing contains a video camera and is arranged to produce a video picture of a subject in a picture taking zone. The video picture can be converted to a print e.g. using a digital thermal color printer. The video picture is stored in memory and can be processed to give a desired composition prior to printing. The picture may consist of the image of the subject which is separated from the background using chroma keying and which is then combined with a selected electronically prestored background or foreground.

Abstract: An automatic picture taking system has a housing which may be in the form of a booth. The housing contains a video camera (20) and is arranged to produce a video picture of a subject in a picture taking zone (3). The video picture can be converted to a print e.g. using a digital thermal color printer (24, 25). The video picture is stored in memory and can be processed to give a desired composition prior to printing. The picture may consist of the image of the subject which is separated from the background using chroma keying and which is then combined with a selected electronically prestored background or foreground.

Abstract: This invention pertains to novel copolyesters consisting essentially of units (I), (II), (III), and (IV). ##STR1## and blends of these polymers and articles made from both. Units (I), (II), (III), and (IV) are present in specified proportions as defined in the "Description of the Invention."The instant copolyesters display orientation in the molten state, good fiber ratings and high strength; they have melting points in the range of from about 340.degree. to about 400.degree. C. and are melt-processible. Advantageously, these compositions filled with about 30 weight percent of glass fibers display heat distortion temperatures of over 240.degree. C. up to about 280.degree. C. and higher, when measured under a load of 264 psi. When blended, certain properties are improved, particularly they are easier to melt fabricate, have a decreased tendency to blister and increased strength.

Abstract: This invention pertains to novel copolyesters consisting essentially of units (I), (II), (III), and (IV). ##STR1## and blends of these polymers and articles made from both. Units (I), (II), (III), and (IV) are present in specified proportions as defined in the "Description of the Invention."The instant copolyesters display orientation in the molten state, good fiber ratings and high strength. Advantageously, the polymers of the present invention display a significant improvement in viscosity and moldability of the neat polymer. The polymers have excellent mechanical and surface properties including blister resistance, strength, toughness, and ability to vapor phase solder, and form strong fibers while still maintaining a high heat distortion temperature. They have melting points in the range of from about 250.degree. to about 360.degree. C. and are melt-processible. Advantageously, these compositions filled with about 30 weight percent of glass fibers display heat distortion temperatures of up to 240.degree.

Abstract: This invention relates to a blend comprising a first LCP polyester polymer consisting essentially of units (I), (II), (III), and (IV). ##STR1## having a melting point under about 420.degree. C., p is approximately equal to r+q, r is from about 0.05 to about 0.9, q is from about 0.95 to about 0.1 and s is from about 0.05 to about 9, and a second LCP polyester polymer comprising at least one moiety selected from the group consisting of hydroxybenzoic acid, hydroxynaphthalene carboxylic acid, dihydroxy naphthalene, naphthalene dicarboxylic acid, oxybisbenzoic acid and substituted hydroquinones wherein the said moiety or moieties comprise(s) at least about 5 mole percent of the units in said second LCP polyester.

Abstract: This invention pertains to novel copolyesters consisting essentially of units (I), (II), (III), and (IV). ##STR1##and blends of these polymers and articles made from both. Units (I), (II), (III), and (IV) are present in specified proportions as defined in the "Description of the Invention."The instant copolyesters display orientation in the molten state, good fiber ratings and high strength. Advantageously, the polymers of the present invention display a significant improvement in viscosity and moldability of the neat polymer. The polymers have excellent mechanical and surface properties including blister resistance, strength, toughness, and ability to vapor phase solder, and form strong fibers while still maintaining a high heat distortion temperature. They have melting points in the range of from about 250.degree. to about 360.degree. C. and are melt-processible. Advantageously, these compositions filled with about 30 weight percent of glass fibers display heat distortion temperatures of up to 240.degree.

Abstract: This invention pertains to novel copolyesters consisting essentially of units (I), (II), (III), and (IV). ##STR1## and blends of these polymers and articles made from both. Units (I), (II), (III), and (IV) are present in specified proportions as defined in the "Description of the Invention".The instant copolyesters display orientation in the molten state, good fiber ratings and high strength. Advantageously, the polymers of the present invention display a significant improvement in viscosity and moldability of the neat polymer. The polymers have excellent mechanical and surface properties including blister resistance, strength, toughness, and ability to vapor phase solder, and form strong fibers while still maintaining a high heat distortion temperature. They have melting points in the range of from about 250.degree. to about 360.degree. C. and are melt-processible. Advantageously, these compositions filled with about 30 weight percent of glass fibers display heat distortion temperatures of up to 240.degree.

Abstract: A molded article of permanent ovenware comprising (A) 35-85% by weight of a wholly aromatic polyester resin; (B) 15-65% by weight of a specifically defined talc containing a minimum amount of materials decomposable at elevated temperatures; and (C) 0-20% titanium dioxide, wherein the wholly aromatic polyester resin (A) is a blend comprising a first resin based on repeating units of hydroquinone, isophthalic acid (or mixtures of iso- and terephthalic acids), and para-hydroxybenzoic acid, and a second resin based on repeating units of biphenol, isophthalic acid, terephthalic acid and para-hydroxybenzoic acid. The ovenware shows excellent resistance to blistering, bubbling and cracking during molding and oven use.

Abstract: A high modulus, high strength melt processable copolyester consisting essentially of recurring units (I), (II), (III) and (IV): ##STR1## wherein said copolyester has a melting point in the range of from about 340.degree. C. to 400.degree. C., a crystallization temperature of from about 300.degree. C.-340.degree. C., and a crystallization rate of at least 1,000 counts/minute.

Abstract: Disclosed are novel blends of fully aromatic copolyesters which comprise (a) 1-19 parts by weight of a polyester comprising recurring moieties of dihydroxybenzene, nonvicinal benzene dicarboxylate, para oxybenzoate to (b) 1 part by weight of a polyester comprising recurring moieties of diphenol, nonvicinal benzene dicarboxylate, para oxybenzoate; wherein the polyester (a) has a melting point in the range of about 340 C. to 400 C., a crystallization temperature of from about 300-340 C., and a crystallization rate of at least 1,000 counter per minute. The blends display improved surface properties, particularly improved blistering resistance.

Abstract: Aromatic polyesters based on isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol are described. The five monomers ae used in well-specified proportions and yield polymers that display an excellent overall combination of mechanical and thermal properties. The subject copolyesters have melting points of at least about 260.degree. C.; their heat distortion temperatures are at least about 200.degree. C. they have fiber ratings of up to 3. The novel polymers can be melt-fabricated using standard injection molding, extrusion and melt-spinning techniques.

Abstract: This invention pertains to novel copolyesters consisting essentially of units (I), (II), (III), and (V). ##STR1## and blends of these polymers and articles made from both. Units (I), (II), (III), and (IV) are present in specified proportions as defined in the "Description of the Invention". The instant copolyesters display orientation in the molten state, good fiber ratings and high strength; they have melting points in the range of from about 340.degree. to about 400.degree. C. and are melt-processible. Advantageously, these compositions filled with about 30 weight percent of glass fibers display heat distortion temperatures of over 240.degree. C. up to about 280.degree. C. and higher, when measured under a load of 264 psi. When blended, certain properties are improved, particularly they are easier to melt fabricate, have a decreased tendency to blister and increased strength.

Abstract: Wholly aromatic polyesters based on isophthalic acid, terephthalic acid, p-hydroxybenzoic acid, hydroquinone and an arylene diol, e.g. 4,4'-biphenol are described. The materials displayed are excellent overall combination of mechanical and thermal properties. Their melting points and heat distortion temperatures (264 psi) are at least about 260.degree. C. and 260.degree. C., respectively. These novel polymers can be melt-fabricated using standard injection molding, extrusion, and melt spinning techniques and yield fabricated articles with good surface characteristics.

Abstract: Process for preparing polyarylates comprising the steps of (a) prepolymerizing a diester of Bisphenol-A with at least one aromatic dicarboxylic acid to form a prepolymer having a melting point of at least about 200.degree. C. and being fluid at the polymerization temperature; followed by (b) polycondensing said prepolymer under agitation until it is substantially transformed into a powdery solid; maintaining said agitation to keep the powdery solid in a polydispersed solid state; and continuing the polymerization below the agglomeration temperature of the polymerizing solid, until the desired molecular weight is reached.

Abstract: This invention relates to the preparation of wholly aromatic polyesters from monomers having a total ash content of no more than 50 ppm and a total potassium content of no more than 20 ppm. These polyesters have good color and good thermal stability and are essentially free of char material which can lead to unacceptable molded and extruded articles.

Abstract: The molding properties of molding compounds based on wholly aromatic polyesters are improved by the addition to such wholly aromatic polyester compositions of a minor amount of an aromatic polyester which is a combination of the following units: ##STR1## Where; p=0 to 0.9, q=0.1 to 1.00, r=1 to 7, S=0.3 to 1.00, t=0 to 0.7. A preferred formulation consists of a polyester where the units are: p=0, q=1.0, r=1 to 5 and S=1.0.