Abstract: An electrical connector comprising a header with a plurality of terminal pins having means for retaining the header in position during soldering to a printed circuit board. Retention is accomplished by an offset formed as a crimp at the insertion end of at least one pair of terminals. The crimps exert opposite normal forces against one surface of their respective holes to retain the header during soldering.

Abstract: This invention relates to a gradient radiation intensifying screen having as an integral part thereof a tonable, photosensitive layer bearing a toned, anatomically correct, unsharp halftone image.

Abstract: A device for coupling single-mode optical fibers, wherein light radiation outside the fibers is transmitted through a collimated optical beam, obtained by a two-lens array facing the fiber ends. Optimal coupling is obtained by translating a third lens and by rotating a small glass plate placed between the collimating lenses.

Abstract: A blow moldable composition of a polyether, an epoxide polymer, and a fibrillatable tetrafluoroethylene polymer.

Abstract: This invention relates to a process for improving the properties of metal oxide superconductors said process comprising deposition an alkali metal layer having a thickness of less than about three monolayers onto the surface of an oxide superconductor by evaporation.

Abstract: A portable respirator system for supplying clean, breathable air to a hood or face mask is disclosed. The system can be carried on a waist belt and includes a housing containing air inlet and outlet plenums, and a battery powered, electric motor operated blower connected between the inlet and outlet plenums. The motor can be manually switched between high and low speed operation to supply high quantities of air upon demand caused by high respiration rate and otherwise supply lower quantities of air sufficient for low respiration rates to extend battery life between rechargings. A differential air pressure sensing switch is responsively connected for actuation when the difference between air pressure in the outlet plenum and the pressure of ambient atmosphere is less than a preselected value.

Abstract: A process wherein freshly-spun, undrawn, nonconductive filaments are combined with one or more spin-oriented, conductive filaments having a nonconductive component made from a major portion of nonconductive, fiber-forming polymeric material and a minor amount of polystyrene, the combined fibers being drawn and co-bulked to produce an anti-static yarn. The conductive filaments used in this process have higher elongations to break, and carpets tufted from the yarns of the process show improved anti-static properties.

Abstract: Continuous filament glass fiber bundles are coated with a molten thermoplastic polymer, without the addition of a size to the glass, by passing the filaments through an unpressurized pool of the polymer contained in a passage. The forces between the filaments and the unpressurized polymer interact to center the filaments in the passage as they pass through. The passage is defined by a body member and a detachable cover having contiguous surfaces joined along a longitudinal mating line which is angularly displaced from the longitudinal axis of the passage to assist in prevention of filament snagging in the melting line as they pass through the passage.

Abstract: A polyamide yarn having on the surface of the polyamide yarn a hydrophobic organic ester dip penetration regulator having a melting point greater than 27.degree. C. and convertible by conventional means into a tire cord having low stiffness and high air permeability and a process for making polymeric tire yarns is disclosed.

Abstract: Woven fabrics from blends of high and low modulus fibers provide comfort plus high durability to hard surface abrasion.

Abstract: A method is provided for preventing or reducing deep vein thrombosis and/or pulmonary embolism by administering a thromboxane A.sub.2 receptor antagonist in conjunction with heparin. A combination of thromboxane A.sub.2 receptor antagonist and heparin is also provided.

Abstract: Process for the manufacture of sodium hydroxide in a sustained manner, tolerant of upsets in sodium hydroxide concentration, by electrolysis of sodium chloride at about 70.degree.-110.degree. C. in an electrolysis cell separated into a cathode compartment and an anode compartment by a cation exchange membrane, wherein the membrane is made of a copolymer of tetrafluoroethylene with a perfluoro monomer Z having a defined structure and a carboxyl end group, the mole ratio of tetrafluoroethylene to the monomer Z in the copolymer being about 7.6 to 8.2, the membrane material on the side exposed to the catholyte being nonporous but having a porous catholyte diffusion layer in direct contact therewith or in close proximity thereof. The sodium chloride feed solution is about equal to the concentration of saturated brine at the operating temperature, and the concentration of sodium chloride solution leaving the anode compartment is about 18-24%, no water being added to the catholyte during steady state operation.

Abstract: A procedure for isolating high molecular weight nucleic acids utilizing a mixture of lytic enzymes and a chaotropic agent to complete protein denaturation and dissociation from nucleic acids is provided. The nucleic acids so obtained are useful for restriction enzyme analysis and DNA probe hybridization.

Abstract: Certain N-acyl phosphonamidothioates and dithioates are useful as insecticides, acaricides and nematocides.

Abstract: A process is provided for preparing phosphonyloxyacylamino acids and derivatives thereof having the structure ##STR1## wherein X is ##STR2## which includes the steps of treating a phosphonic acid dichloride of the structure ##STR3## with an .alpha.-hydroxy acid of the structure ##STR4## in the presence of base such as triethylamine at reduced temperatures to form the cyclic mixed anhydride of the structure ##STR5## (which is a new intermediate) and reacting the cyclic mixed anhydride with an amino acid or ester of the structureHXin the presence of base such as triethylamine produces the ACE inhibitor compound ##STR6## In an alternative process, the cyclic anhydride is quenched with water to form the diacid ##STR7## which is treated with a condensing agent such as dicyclohexyl carbodiimide (DCC), 1,1-carbonyldiimidazole (CDI) or thionyl chloride followed by quenching with the amino acidHXproduces the above ACE inhibitor compound.

Abstract: A low temperature cure electrodepositable cathodic resin is disclosed. The resin is the reaction product of a polyepoxide amine adduct and a novel blocked crosslinking agent. The crosslinking agent of our invention is tetramethylxylene diisocyanate blocked with any suitable blocking agent. The resulting resin can be cured at relatively low temperatures (250.degree.-275.degree. F.), which potentially allows the use of the resin with articles containing plastics.

Abstract: A string-up system and apparatus, using a novel dual-slotted traverse guide, with preferential string up of a first yarn in the one slot, associated with transfer means to move a yarn, if desired, out of the first slot, so this yarn is strung up in the second slot.

Abstract: This invention relates to pyridine N-oxide sulfonylurea herbicides, agriculturally suitable compositions containing them and their method-of-use as preemergent and/or postemergent herbicides or plant growth regulants.

Abstract: An entrapped gas bubble in a thick film coating of a member is caused to pulsate when the ambient pressure of the chamber in which the member is disposed is varied. The pulsations may be used to observe the bubble or to cause it to burst.

Abstract: A marking device includes a plurality of individual marking pin assemblies. Each marking pin assembly is spaced an angular distance from each adjacent marking pin assembly in the marking device to form a generally fan-shaped array. An arcuate object to be marked by the marking device is placed on an object support plate. As the arcuate object is rotated on the object support plate, the plurality of marking pin assemblies in the marking device operate to selectively imprint a plurality of preselected characters in the circumference of the arcuate object.