Abstract: A wrap bandage storage container that is configured to provide winding and dispensing of wrap bandage. The wrap bandage storage container includes a body member that is formed from a first wall and a second wall wherein the second wall is contiguous with the perimeter edge of the first wall and is perpendicular therewith. The body member has a first side and a second side wherein the second side is open to the interior volume of the body member. The second wall has an entry slot formed therein that allows the wrap bandage to pass therethrough. A shaft member is mounted in the interior volume of the body member and is configured with a slot operable to engage a portion of the wrap bandage. A handle is located on the opposing side of the first wall and is operably coupled to the shaft member.

Abstract: The present invention is a method of forming a toner image on a receiving sheet. he method includes forming an electrostatic image on a primary image member and toning the image with a dry toner to form a toner image. The toner includes toner particles having a diameter of between 4 and 10 microns and transfer assisting particles appended to the toner particles surface. The transfer assisting particles have a diameter of between 20 and 100 nm. The toner image is transferred from the primary image member to an intermediate image member having an overcoat layer, the overcoat layer having a Young's modulus of from 250 to 500 MPa. The toner image is transferred from the intermediate image member to a receiving sheet wherein the intermediate image member drives the primary image member or the receiving sheet.

Abstract: A switched reluctance machine is supplied from two voltage sources during a cycle of excitation. The higher voltage is a conventional bus voltage obtained, e.g., from a low-voltage storage battery and an up-converter. The lower voltage is supplied directly from the battery. The higher voltage supplies the machine during only part of an excitation cycle, the lower voltage supply supplying the energy directly to the machine during the remainder of the excitation cycle. This reduces the duty of the up-converter and increases the efficiency of the overall drive. One method of operation of the circuit allows the elimination of the up-converter.

Abstract: A switching circuit for an inductive load such as a switched reluctance machine comprises two separate switching circuits for separate portions of the inductive load. A supply voltage is applied across the two circuits which are connected together at a node between two dc link capacitors. Each separate circuit is exposed to only approximately half the supply voltage between a respective terminal and the central node so that conventional switching components can be used to handle higher voltages applied across the two connected circuits.

Abstract: A control circuit for a switched reluctance machine comprises a transistor connected with the machine winding across a rectified ac power supply. The transistor controls the flow of current through the winding in a primary current path. A silicon controlled rectifier and a capacitor are serially connected across the power supply and a diode is connected between the winding and the transistor and between the silicon controlled rectifier and the capacitor. In the steady state, the capacitor is charged each time the transistor is opened. The transistor and the silicon controlled rectifier are actuated together so that the capacitor discharges through the silicon controlled rectifier and the winding until the capacitor is discharged below the supply voltage. Thereafter, the silicon controlled rectifier ceases conduction and energy is drawn from the supply. The circuit avoids the need for a dc link capacitor across the power supply to smooth the supply voltage.

Abstract: The present invention employs digital circuitry to compensate for variations in DC link voltage transmitted to a switched reluctance machine. The digital voltage compensation system of the present invention periodically samples the DC link voltage and actual rotor speed, then supplies the samples in digital form to a microcontroller that derives a compensated speed signal to compensate for changes in DC link voltage.

Abstract: Aluminum-based products are disclosed which contain 0.5 to 4.5 wt % lithium and which further contain no more than 1 ppm of each of the alkali metal impurity elements sodium, potassium, rubidium, and cesium. The products are capable of being aged to a peak-aged condition at which they have a grain boundary region substantially free of liquid phase eutectics comprised of sodium and potassium that form embrittlement phases at room temperature, and have a higher fracture toughness than a similar product containing more than 5 ppm in total of the alkali metal impurity elements.

Abstract: A substantially lithium-free aluminum base alloy product having improved combinations of elongation and fracture toughness in an aged condition, the aluminum alloy product comprising at least 0.5 wt. % magnesium; 0.01 to 1 ppm Na; 0.01 to 1 ppm K; less than 0.1 ppm Rb; and less than 0.1 ppm Cs, the remainder comprising aluminum, the amount of Na, K, Rb and Cs measured by GDMS, the product in an aged condition having a grain boundary region substantially free of liquid phase eutectics comprised of Na and K that form embrittlement phases at room temperature; and an increase in fracture toughness compared to an aluminum magnesium alloy having greater amounts of Na, K, Rb and Cs.

Abstract: A process for preparing a high strength magnesium alloy comprising heating a melt comprised of a base metal of magnesium, greater than 0.5% of lithium, and at least one alkali metal impurity selected from the group consisting of sodium, potassium, rubidium and cesium, the total alkali metal present in an amount greater than 5 ppm, to a temperature of about 50.degree. to 200.degree. C. above the melting point of alloy being refined in a vacuum for a sufficient time to reduce the aggregate concentration of alkali metal impurities in the melt to less than about 5 ppm as measured by GDMS.

Abstract: Aluminum-base alloys in a peak-aged condition and magnesium-base alloys in the form of cast products and wrought products capable of having improved combinations of yield strength and fracture toughness are disclosed. The aluminum-base alloy products are comprised of 0.5 to 4.5 wt %. lithium, about 0.01 to 1 ppm Na, about 0.01 to 1 ppm K, less than 0.1 ppm Rb, less than 0.1 ppm Cs, and the remainder comprising aluminum. Aluminum-base alloy products in a peak-aged condition have: (i) a grain boundary region substantially free of liquid phase eutectics comprised of Na and K that form embrittlement phases at room temperature; and (ii) an increase in fracture toughness compared to an aluminum-lithium alloy having greater than 5 ppm aggregate alkali metal.

Abstract: The toughness of Al-Li, Al-Mg and Mg-Li alloys is increased by a melting and refining process designed to reduce the concentration of alkali metal impurities below specified levels. The hydrogen and chlorine gas constituents are also significantly reduced.

Abstract: The toughness of Al-Li, Al-Mg and Mg-Li alloys is increased by a melting and refining process designed to reduce the concentration of alkali metal impurities below about 1 ppm and preferably below about 0.1 ppm. The hydrogen and chlorine gas constituents are also significantly reduced.

Abstract: High strength and high toughness are combined in an aluminum-based metallic product by dispersing particles of an aluminum-based metal having a toughness of at least about 20 foot-pounds through a matrix of aluminum-based metal having a yield strength of at least about 30 ksi.

Abstract: A vertically oriented centrifuge tube is placed in a rotor cavity and the open end sealed with a tapered plug. A resilient O-ring is placed in an annular groove formed in the top of the tapered plug and a retaining disc, secured to the open end of the cavity, wedges the plug into the open end of the centrifuge tube. The O-ring, being resilient, maintains an axial force which aids in retaining the tapered plug properly seated within the open end of the centrifuge tube, even during and following the stresses of centrifugation.

Abstract: A vertically oriented flexible centrifuge tube is placed in a rotor cavity or other enclosure, and the open end sealed with a tapered plug. The plug is formed with a peripheral groove in the tapered portion. A retaining disc, secured to the open end of the enclosure, wedges the plug into the open end of the flexible tube. The mouth of the enclosure is flared to accommodate the plug's taper. When the tube is centrifuged, the wall of the tube cold flows into the groove forming a locking seam such that the tube and plug are mechanically locked together and maintain an effective pressure seal.

Abstract: A method for enhancing the mechanical properties of cast beryllium and beryllium alloy bodies by reducing beryllium grain size. More particularly, grain size is reduced by forming a metal beryllide phase that is soluble in molten beryllium but of limited solubility in the solid metal. Initially, molten beryllium is cast into a mold and solidified resulting in precipitation of the metal beryllide in the form of finely divided particles at the beryllium grain boundaries. The cast body is then mechanically worked below its recrystallization temperature to form an unstable, deformed microstructure which is converted to a fine grain microstructure during a subsequent anneal above the recrystallization temperature of the beryllium or beryllium alloy body. The anneal can be a separate operation or a continuation of the plastic deformation operation.

Abstract: A method for making high ductility beryllium bodies by controlling beryllium oxide particle growth during hot pressing of beryllium powder to a maximum median size of 150 nm. More particularly, particle size is controlled by utilizing starting beryllium powder containing a maximum total concentration of aluminum, silicon and magnesium of 200 ppm and consolidating the powder at a maximum temperature of 1400.degree. F. Ductility is also enhanced by utilizing starting beryllium powder containing a maximum beryllium oxide volume fraction of 1.6 percent and annealing the consolidated powder at temperatures of from 2000.degree. to 2250.degree. F. The anneal can be a separate operation or a continuation of the hot pressing operation.

Abstract: A method for enhancing the mechanical properties of beryllium and beryllium alloy bodies by deforming and recrystalizing cast and hot pressed beryllium bodies to a finer grain microstructure than initially present in the bodies without introducing a pronounced crystallographic texture into the bodies. More particularly, the beryllium body undergoes a textureless forging process by which the body is plastically deformed at elevated temperatures with the resulting metal flow being restricted to only one axis of the body. The deformed body is then restored to essentially its original shape and annealed at its recrystalization temperature with a resulting refinement in grain size to a size smaller than that present in the initial body.