Abstract: An intravascular catheter assembly includes a catheter needle sheath having a retractable needle which is moved upon slidable movement of a handle member that is slidably mounted in the housing of the catheter needle sheath. The catheter needle safety sheath is insertable into a catheter or into a catheter adapter and backflow device which is in turn insertable into the catheter. The backflow device includes an elastomeric diaphragm disposed therein which re-seals upon withdrawal of the needle therefrom and advantageously prevents excessive fluid leakage from the catheter. The catheter needle safety sheath provides an improved means for disposing of the used needle since the handle member may be slidably moved in a rearward direction so as to retract the needle within the sheath. Both the catheter needle safety sheath as well as the catheter adapter and backflow device prevent unnecessary exposure to bodily fluids which may transmit diseases and thereby enhance the safety of the operators of these devices.

Abstract: By deriving the image formed by light specularly-reflected from substantially all of the convex (mirror-like) spherical surface of a bearing ball under test that is being illuminated with diffuse light, any defect in the bearing ball under test reveals itself as a light-contrast pattern in the otherwise substantially uniform diffuse background of the image.

Abstract: A hanger clip in the shape of a closed "S" having co-planar, symmetrical loops. The end portions of the hanger clip are bent at their termini at an approximately ninety (90.degree.) degree angle with the vertices of these forming approximately ninety (90.degree.) degree angles and being located adjacent the mid-region of the hanger clip.

Abstract: A protecting and restraining apparatus for use in applying an intravenous or catheter system to an extremity of the body for substantially immobilizing the extremity while permitting continued intravenous or catheter system operation comprising: an elongated flexible sheet member adapted to be wrapped about and encompass the arm, the sheet member further comprising a main base portion and a plurality of straps integrally formed with and transversely depending from the main base portion at a marginal longitudinal edge of the main base portion, each of the straps being connected to its adjacent straps at selective points along confronting marginal transverse edges of the adjacent straps; a flexible sleeve member being pivotally attached to a first surface of the sheet member coextensively along one marginal longitudinal edge of the sleeve member so as to allow pivoting of the sleeve member toward and away from the first surface of the sheet member, the sleeve being adapted to accept and retain a stiffener membe

Abstract: An improved authenticating device comprises a substrate bonded to the sheet material, the substrate having a reflective diffractive structure formed as a relief pattern on a viewable surface thereof, and a transparent material covering the structure. Specified grating parameters of the diffractive structure, obtainable at low cost, result in peculiar, but easily discernable, optical color properties that cannot be copied by color copying machines.

Abstract: A shield comprising a thin elongated transparent flexible member having an upper flat edge, a pair of spaced convex edges spaced apart and located opposite the flat edge for forming a pair of spaced planar portions. The planar portions extend between the flat edge and the convex edges, with the convex edges being joined by a concave edge located opposite the flat edge and between the convex edges which defines a narrowed webbed portion extending integrally between the planar portions. An elongated deformable flexible sealing member extends along the flat edge between the distal ends of the flexible member and a second elongated deformable flexible sealing member extends continuously along the convex edges and the concave edge between the distal ends of the flexible member.

Abstract: A process is provided for forming a patterned layer of a polymeric material on a substrate for the lithographic processing thereof. A layer of polymeric material is formed on the substrate, embossed to form a pattern of peaks and valleys and dry etched to remove the residual polymeric material in the valleys, thereby exposing a portion of the substrate surface.

Abstract: A method for decreasing the turnoff time in a crystalline semiconductor region within a semiconductor device comprises initially providing a semiconductor region having a predetermined density of pinning centers. The semiconductor region is then irradiated so as to yield crystal damage that is equivalent to or greater than that which would be produced by irradiating with 1 MeV neutrons at a fluence greater than approximately 10.sup.13 cm.sup.-2. The region is then annealed at a temperature of approximately 350.degree. to 450.degree. C. for approximately 15 minutes to one hour so as to yield a density of stable recombination centers correlating with the pinning centers that provides a stable minority carrier lifetime within the semiconductor region.

Abstract: An IGFET device includes a semiconductor wafer having a first conductivity type drain region contiguous with a wafer surface. A second conductivity type body region extends into the wafer from the wafer surface so as to form a body/drain PN junction having an intercept at the surface; the body region further including a body-contact portion of relatively high conductivity disposed at the surface. A first conductivity type source region extends into the wafer so as to form a source/body PN junction which has first and second intercepts at the surface. The first intercept is spaced from the body/drain intercept so as to define a channel region in the body region at the surface, and the second intercept is contiguous with the body contact portion. The second intercept is relatively narrowly spaced from the first intercept along most of the length of the first intercept and is relatively widely spaced from the first intercept at one or more predetermined portions.

Abstract: A four layer insulated gate controlled semiconductor device has a range of anode-cathode currents over which gate control potentials will extinguish such anode-cathode current. Coupling circuitry for limiting the rate of change of turn-off gate control potential to the gate of the device enhances the range of anode-cathode current over which control is maintained.

Abstract: In a complex industrial installation, it is usually very difficult to locate the position of a fault when one occurs.In a method of determining the location of a fault, information corresponding to each component part of the installation and the correct operating parameters of each component part is stored in a memory and a computer is used to produce on a visual display unit schematic diagrams of at least part of the installation and indicates tests which are to be carried out, the operator causes the test results to be supplied to the computer and, after comparing the results with the stored information, the computer indicates on the display either where the fault lies or further schematic diagrams and tests which are to be carried out to locate where the fault lies. Apparatus for carrying out the fault location is also described.

Abstract: A system for correcting for intensity variations and electron beam landing errors in a flat panel display device includes two compensation means. The first compensation means applies a continuously varying voltage to the modulation electrodes to add a varying current to the electron beam current. The compensation current offsets the intensity variations of the electron beam. The second compensation means applies an averaged position signal to the modulation electrodes to compensate for beam landing errors of the electron beam.

Abstract: An envelope for a flat panel display device is comprised of two portions which respectively include a baseplate and a faceplate held in a spaced parallel relationship by a plurality of side walls. A plurality of support walls supports the envelope against collapse from atmospheric pressure. Differences in the heights of the side walls and support walls are compensated for by a flexible seal which extends around the periphery of the envelope so that the faceplate and baseplate and side walls are coupled through the flexible seal.