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200results about How to "Easy to reassemble" patented technology

Collection of dissolved gases from groundwater

A system for rapid collection of large volumes of dissolved gases from groundwater pumps the water from a large-diameter passage through a small-diameter restrictor passage, and then into a flow-through collection chamber. The small-diameter passage causes a drop in the hydrostatic pressure of the groundwater traveling therein, causing spontaneous ebullition of gas bubbles, which are then collected in the collection chamber. A treatment station within the passages selectively alters the concentration of dissolved gases within the groundwater. Testing reveals that the gases are collected in proportion to their presence in the groundwater, and thus the system allows accurate quantification of concentrations of dissolved gas in groundwater. The system may beneficially be made easily portable, thereby allowing its use in the field, as well as in laboratory settings.
Owner:BROWNE BRYANT A +1

Open type wedgethread connection

InactiveUS20020074799A1Highly resistant to handling damageMinimize impactSleeve/socket jointsDrilling rodsThreaded pipeHigh pressure
An open wedgethread is disclosed that has an included angle measured in the gap between the stab flank and the load flank to be not less than zero, so as to prevent premature wedging between mating flanks before the position of full makeup is reached, as does occur between trapped wedgethreads wherein the included angle is less than zero. The invention may be used for pipe threads large or small, as a flush joint, with collars, screwed into plates or it may even be used to reversibly connect such as solid posts to base members where a wide makeup torque range is desired. This Open wedgethread, as opposed to trapped wedgethreads, provides a threaded pipe connection that: is more cost-effective; can seal high pressure gas; can provide selectively a connection strength as high as the pipe strength; assures easy makeup to the desired position of full makeup within a wide torque range; may have a torque strength as high as the pipe torque strength; is easier to manufacture; is easier to gage; and is less subject to handling damage.
Owner:RAMOS BEVERLY WATTS

Sequential controllable nanometer silicon quantum dot array resistive random access memory and preparation method thereof

The invention relates to a sequential controllable nanometer silicon quantum dot array resistive random access memory and a preparation method thereof, and belongs to the technical field of non-volatile memories. The resistive random access memory comprises P and a silicon substrate material, and is characterized by also comprising a resistive silicon quantum dot multilayer film nanometer column array attached to the substrate material and an upper electrode and a lower electrode which are attached to the upper surface of the resistive silicon quantum dot multilayer film nanometer column array and the lower surface of the substrate; an insulating medium layer is arranged in the resistive multilayer film nanometer column array; and a silicon quantum dot multilayer film nanometer column is formed by at least two layers of silicon-enriched silicon nitride films which are inlaid with nanometer silicon quantum dots and have different nitrogen components or a silicon-enriched silicon oxide film sublayer which is inlaid with the nanometer silicon quantum dots and has different oxygen components. The sequential controllable nanometer silicon quantum dot array resistive random access memory can be compatible with the current micro-electronic process technology, and can show the advantage of sequential controllable nanometer silicon in resistive random access memory materials to fulfillthe aim of improving the switch ratio and stability of the resistive materials, so that nanometer silicon quantum dots are applied in silica-based nanometer memories in future.
Owner:NANJING UNIV
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