摘要:
Embodiments of the present invention provide methods, apparatuses, and systems associated with detecting, analyzing, and/or displaying historical glucose levels and/or trends in a body.
摘要:
A signal edge detector circuit is described for the detecting the signal transitions in a stream of microwave signals at a predetermined clock signal rate, particularly for OC-768 data streams. Selected transmission lines in the signal edge detector circuit reflect the signal transitions to terminate each signal transition at the output terminal of the detector circuit and to cancel out each other at a circuit node to prevent reflected transitions back to the input terminal of the detector circuit and to the transmission lines. With a squaring circuit at the output terminal of the detector circuit and a narrow-band filter at the output of the squaring circuit, the clock signals at the predetermined clock signal rate are recovered.
摘要:
A variable stator vane assembly and a bushing thereof. The bushing includes a metal bushing body and a wear-resistant coating. The assembly includes a rotatable trunnion and a first metal bushing. The trunnion is capable of being located in a through hole extending between outer and inner surfaces of a compressor casing of a gas turbine engine. The first metal bushing is capable of being located in the through hole proximate the outer surface to surround a first portion of the trunnion when the trunnion is located in the through hole. The first metal bushing and the first portion have wear-resistant coatings which are in mutual contact, apart from any intervening lubricant, when the trunnion and the first metal bushing are located in the through hole and the trunnion is rotating with respect to the first metal bushing.
摘要:
A battery powered, electrically driven screwdriver has an elongated body with a narrow forward portion disposed toward the working end, and a relatively larger rearward portion disposed distal from the working end. A tapering transition connects the narrow forward portion with the larger rearward portion. At least one fingertip- operable switch is mounted on the forward portion. The at least one fingertip switch is disposed at a position consistent with a pad of a human index finger when the screwdriver is held in a “pencil” style of grip. One embodiment includes a drive system capable of applying limited torque to said surgical screws, wherein said torque is limited at or below said predetermined, known maximum torsion capability of specific surgical screws.
摘要:
A variable gas turbine compressor vane assembly comprising a case structure comprising a cavity. A compressor vane is at least partially disposed inside the cavity in the case structure. The portion of the compressor vane is rotatably supported inside the cavity. A wear coating is disposed on at least a portion of a surface of the compressor vane. An antifriction coating is disposed on the wear coating. A bushing is disposed between the antifriction coating and the case structure. The bushing is in sliding contact with each of the antifriction coating and the case structure. The antifriction coating maintains a coefficient of friction between the antifriction coating and the bushing of equal to or less than about 0.95 in atmospheres substantially devoid of water vapor.
摘要:
The present invention is a turbine engine component comprising a superalloy substrate, a bond coat overlying the substrate having a thickness in the range of about 0.0005 inch to about 0.005 inch, a thin alumina scale overlying the bond coat, and a thermal barrier coating (TBC) overlying the thin alumina scale, the TBC having a thickness in the range of about 0.0025 inch to about 0.010 inch, and comprising at least mischmetal oxide. The present invention is also a method for the application of a thermal barrier coating to a superalloy turbine engine component comprising the steps of: providing an electron beam physical vapor deposition apparatus, providing a turbine engine component comprising a surface to be coated, providing an oxide ingot comprising mischmetal oxide and another oxide material selected from the group consisting of yttria-stablized zirconia, zirconia, yttria, hafnia, at least one other rare earth oxide, and combinations thereof, placing the component and the ingot into the apparatus, drawing a vacuum within the apparatus, forming a melt pool on the ingot, dispersing mischmetal oxide vapors and yttria-stabilized zirconia vapors, depositing the mischmetal oxide vapors and the yttria-stabilized zirconia vapors onto the surface to be coated, said deposition forming a thermal barrier coating having a thickness in the range of about 0.0025 inch to about 0.010 inch.
摘要:
The present invention concerns embodiments of swim goggles. In one embodiment, the goggles include a pair of eyepieces that are not interconnected by a nose piece or a head strap. Each eyepiece includes a transparent lens portion that covers an eye and a peripheral frame portion surrounding a respective lens portion. The frame portion of each eyepiece has a posterior surface that carries an adhesive layer (e.g., a layer of adhesive tape) for adhesively securing the eyepiece to the skin adjacent the eyes. In another embodiment, the eyepieces can be interconnected by a nose piece and a head strap. The lens portion of each eyepiece includes a flat, anterior lens and a flat, side lens that is connected to a temporal edge of the anterior lens and is inclined away from the anterior lens to reduce hydrodynamic drag and optical distortion.
摘要:
Ceramic compositions comprising at least about 91 mole % zirconia and up to about 9 mole % of a stabilizer component comprising a first metal oxide having selected from the group consisting of yttria, calcia, ceria, scandia, magnesia, india and mixtures thereof. This stabilizer component further comprises a second metal oxide of a trivalent metal atom selected from the group consisting of lanthana, gadolinia, neodymia, samaria, dysprosia, erbia, ytterbia, and mixtures thereof. These ceramic compositions are useful in preparing thermal barrier coatings having reduced thermal conductivity for the metal substrate of articles that operate at, or are exposed to, high temperatures.
摘要:
The burr hole cover includes a thin plate having radial arms in an exemplary embodiment. Each arm has a distal end opening for receiving a fastener for attaching the plate to the cranium. An enlarged access passageway through the plate, preferably at the plate's center provides a passageway for an intracranial monitoring tube. The passageway is elongated to allow the tube to pass through the burr hole cover at a gentle angle.
摘要:
A container is provided in the form of a cup-like container body with a round mouth closed by a lid which becomes removably replaceable upon tearing away of a circumferentially extending tear strip which initially surrounds the mouth rim of the container body as a radially outer, integral part of the lid flange. As the lid is differential pressure-thermoformed, its radially outer region is formed into a generally inverted U-shaped structure which near the juncture of the base and radially outer leg of the inverted U, is provided, within the channel, with an inverted V-shaped notch of substantially diminished wall thickness to provide a line of weakness which preferably extends nearly fully around the circumference of the lid, but for at an angularly short tear-starting site. After the thermoforming step, and preferably in connection with trimming the lid from the surrounding scrap portion of the sheet in which it was formed, a mechanical crimper axially collapses an initially radially outwardly concave annular portion of the radially outer leg of the inverted U, intermediate the vertical extend of that leg, with an upwardly, inwardly directed barb or hook which, cooperating with the rim of the cup provides the snap lock feature for securing the lid to the cup. After the initial lidding, it is this barb which prevents removal of the lid until the tear strip is torn away.