165results about How to "Minimal resistance" patented technology

The present invention is directed to a deployment system for an endoluminal device. The deployment system includes a confining sheath placed around a compacted endoluminal device. A deployment line is provided in the system that is an integral extension of the sheath. As the deployment line is actuated, the sheath retracts from around the compacted endoluminal device. As the sheath retracts from around the endoluminal device, material from the sheath may be converted into deployment line. Once the sheath is retracted from around the compacted endoluminal device, the endoluminal device expands in configuration and repairs vascular or cardiac structures of an implant recipient. Any remaining sheath material is removed from the implantation site along with the deployment line. The deployment system also includes an endo-prosthesis mounting member placed between the endoluminal device and an underlying catheter. The endo-prosthesis mounting member serves to cushion and retain the endoluminal device when constrained by the sheath and may assist in expansion of the endoluminal device when unconstrained by the sheath. The present invention is also directed to a deployment system having a deployment assembly that simultaneously expands an endo-prosthesis mounting member while removing a sheath from an expandable medical device.

An implantable vascular access port assembly that has a septum, a reservoir, and a catheter connector assembly for use in connecting a catheter with the vascular access port. The catheter connector assembly has an O-ring, an O-ring seal, a locking ring, and a catheter connection plug, which components are located in secured adjacent relationship to one another, respectively, in the vascular access port. The catheter connector assembly securely locks the catheter inside of the vascular access port without compromising the lumen cross-sectional area and can withstand high pressures.

A structure and method of manufacture for an improved multi-chip semiconductor package that reduces package resistance to a negligible level, and offers superior thermal performance. Housing of multiple dies is facilitated by providing electrically isolated lead frames that are separated from a common base carrier by a non-conductive layer of laminating material. A silicon die is attached inside a cavity formed in each lead frame. Direct connection of the active surface of the silicon die to the printed circuit board is then made by an array of solder bumps that is distributed across the surface of each die as well as the edges of the lead frame adjacent to each die.

The present invention is directed to a deployment system for an endoluminal device. The deployment system includes a confining sheath placed around a compacted endoluminal device. A deployment line is provided in the system that is an integral extension of the sheath. As the deployment line is actuated, the sheath retracts from around the compacted endoluminal device. As the sheath retracts from around the endoluminal device, material from the sheath may be converted into deployment line. Once the sheath is retracted from around the compacted endoluminal device, the endoluminal device expands in configuration and repairs vascular or cardiac structures of an implant recipient. Any remaining sheath material is removed from the implantation site along with the deployment line.

A magneto-resistive memory cell and a method of forming the memory cell, includes a substrate, a single crystalline semiconductor diode formed in the substrate; and a first thin film conductor recessed in the substrate, and a second thin film conductor form above a magnetic tunnel junction formed on the diode. The diode and first thin film conductor share a non-planar common surface, such that the metal tunnel junction is a predetermined distance from the thin film conductor.

An improved tamper-evident package includes a plastic closure having a top wall portion, a depending annular skirt portion, and a tamper band at least partially detachably connected to the skirt portion. The package includes a container having a neck portion configured for tamper-indicating cooperation with the projections on the tamper band. The container includes a plurality of circumferentially spaced ratchet-like locking teeth, each of which presents a locking surface for interfering engagement with the respective one of the projections on the closure tamper band. Notably, disposition of the flexible projections of the pilfer band in pre-determined relationship to an internal thread formation of the closure permits the flexible projections to be positioned so that each of the locking teeth on the container is engaged by a respective one of the flexible projections attendant to very little relative rotation of the closure relative to the container during removal.

A six-bar linkage mechanism for conforming to the configuration of a tractored surface having a central link defined by a tool body and a saddle link spaced from the central link and movable for conforming with the tractored surface. A pair of front links each having pivotal connection with respective ends of the saddle link and having linearly movable pivotal connection with the central link to permit angular and spacing changes of the saddle link relative to the central link. A pair of centralizer links are located between the front links and have pivotal connections with the saddle link and pivotal connections with the central link. One of the pivotal connections is linearly movable on the central link. For tractor tools, when the tractored surface is a wellbore or well pipe, a plurality of six-bar linkages radiate from a tool body for surface conforming traction with the tractored surface.

A method for filtering a dirty air stream in a vacuum cleaner to obtain a clean air stream comprises subjecting the dirty air stream to a first cyclonic separation stage to obtain a partially cleaned air stream and subjecting the partially cleaned air stream to an electronic filtration stage and optionally a second cyclonic separation stage to obtain the clean air stream. The electronic filtration stage is optionally removable with a cyclonic cleaning stage from the vacuum cleaner. The electronic filtration stage is optionally an electrostatic precipitator which utilizes air flow through the vacuum cleaner to generate the voltage used by the electrostatic precipitator.

A nanofibrous catalyst and method of manufacture. A precursor solution of a transition metal based material is formed into a plurality of interconnected nanofibers by electro-spinning the precursor solution with the nanofibers converted to a catalytically active material by a heat treatment. Selected subsequent treatments can enhance catalytic activity.

The present invention is directed to a deployment system for a self-expanding endoluminal device. The deployment system includes a confining sheath placed around a compacted endoluminal device so that upon deployment the sheath is transitioned into an internal deployment line housed within the catheter. The deployment system is configured to prevent rotation of the catheter relative to the deployment line during deployment line actuation.

A shock absorber of a monotube type utilizes a mechanically fixed base valve to regulate oil flow between the compression and compensation chambers, and a compressible bladder in the compensation chamber to allow volume compensation, which, together, eliminate the need for pressurized gas and a floating piston found in conventionally known monotube dampers.

A method for filtering a dirty air stream in a vacuum cleaner to obtain a clean air stream comprises subjecting the dirty air stream to a first cyclonic separation stage to obtain a partially cleaned air stream and subjecting the partially cleaned air stream to an electronic filtration stage and optionally a second cyclonic separation stage to obtain the clean air stream. The electronic filtration stage is optionally removable with a cyclonic cleaning stage from the vacuum cleaner. The electronic filtration stage is optionally an electrostatic precipitator which utilizes air flow through the vacuum cleaner to generate the voltage used by the electrostatic precipitator.

A turbine system (10) for capturing energy from a fluid stream includes a torque arm (12). At least a pair of, preferably symmetrical clam shell, turbine blades (14) with the upper (16) and lower (18) halves are oppositely connected to the torque arm (12). A coordinating system (46) is connected to the symmetrical clam shell turbine blades (14). The coordinating system (46) further comprises a first system (48) and second system (52). The first system (48) is connected to control and regulate opening and closing of the upper (16) and lower (18) halves of each individual clam shell turbine blade (14). The second system (52) is connected between each pair of the symmetrical clam shell turbine blades (14) so that as one clam shell turbine blade (14) closes the opposite clam shell turbine blade (14) is forced open.

Systems for generating electric power from wind are disclosed, which use buoyant aircraft and spinnaker sails to generate very large pulling forces, which will be used to drive electric generators. The buoyant aircraft, referred to as “airbarges”, will have large, wide, and flat shapes which combine various traits of kites, manta rays, and “flying wing” aircraft. They can be flown “nose up” during the pulling stage of each power cycle, and “nose down” during retrieval. Spinnaker sails are comparable to horizontal parachutes, with tethering systems that will enable them to be pulled back to a starting location in a “luffing flag” or “closed umbrella” configuration. Because of various factors, spinnaker sails can generate much greater power output and operating efficiency than 3-blade wind turbines. “Webbing sails” made from interwoven straps also are disclosed, which can be used even in extremely high winds.

A method of impulse treatment which modifies at least one specified property of a material or object (such as a welded joint), or produces a material or object with at least one specified physical, mechanical or structural property, by adaptively controlling an impulse action upon the material / object is described. An impulse action includes normalized impulses and pauses, i.e., a controlled and adaptive alternation of periods of material condition impulse activation with periods of relaxation therebetween, wherein the pauses allow the material to recover from the impulse before the next impulse is applied to the material. The energy of the impulse actions can originate from various sources, but the method of the invention is in particular advantageous when the energy of action is initiated and delivered by ultrasonic impact, wherein the energy is applied to any suitable material so that at least one property of the material is modified or produced in order to attain a desired technical effect.

A safety catheter insertion assembly including a catheter hub coupling assembly. The safety catheter insertion assembly having a needle hub slideably coupled to a needle housing such that the needle hub is moveable between a first position wherein an insertion needle extends from the needle housing, and a second position wherein the sharp distal tip is housed within the needle housing, the catheter hub coupling assembly coupling the catheter hub to the needle housing in the first position and releasing the catheter hub from the needle housing in the second position.

The invention is a vertical geometry light emitting diode capable of emitting light in the electromagnetic spectrum having a substrate, a lift-off layer, a strain relieved superlattice layer, a first doped layer, a multilayer quantum wells comprising alternating layers quantum wells and barrier layers, a second doped layer, a third doped layer and a metallic contact that is in a vertical geometry orientation. The different layers consist of a compound with the formula AlxlnyGa(1-x-y)N, wherein x is more than 0 and less than or equal to 1, y is from 0 to 1 and x+y is greater than 0 and less than or equal to 1. The barrier layer on each surface of the quantum well has a band gap larger than a quantum well bandgap. The first and second doped layers have different conductivities. The contact layer has a different conductivity than the third doped layer

An electrostatic air cleaning device includes an array of electrodes. The electrodes include corona electrodes connected to a suitable source of high voltage so as to generate a corona discharge. Laterally displaced collecting electrodes include one or more bulges that have aerodynamic frontal “upwind” surfaces and airflow disrupting tailing edges downwind that create quite zones for the collection of particulates removed from the air. The bulges may be formed as rounded leading edges on the collecting electrodes and / or as ramped surfaces located, for example, along a midsection of the electrodes. Repelling electrodes positioned between pairs of the collecting electrodes may include similar bulges such as cylindrical or semicylindrical leading and / or trailing edges.

A medical implant deployment system for placing an implant at a preselected site within a vessel, duct or body lumen of a mammal comprising a reloadable deployment system includes a mechanical coupling assembly at the distal end of a delivery member, having an extended configuration in which the coupling assembly is adapted to receive or release the implant proximal end and a retracted configuration where the coupling assembly distal end is interlockingly engaged with the implant proximal end. Once the implant is properly positioned the coupling assembly is actuated, thereby releasing the implant at a desired position within the body.

A rapid refrigeration apparatus includes a container having a container upper end, a container wall with a container opening in the container upper end bordered by a container rim; a beverage retaining vessel extending within the container defining an annular refrigerant chamber between the container and the vessel containing a liquefied refrigerant and refrigerant vapor, and the vessel containing flowable vessel contents, the vessel being sized to fit at least partly through the container opening, the vessel including a vessel rim secured relative to the container rim, and a vessel wall including at least one reversible bulge; a lid sealingly secured to the container rim and including a lid opener mechanism for releasing the vessel contents from the vessel and container for consumption; the lid opener mechanism including a lid opener mechanism activation mechanism for voluntarily opening the lid opener mechanism at a selected moment in time; and a refrigerant release mechanism for releasing the refrigerant from the annular chamber into the atmosphere surrounding the apparatus; the refrigerant release mechanism including a refrigerant release mechanism activation mechanism for voluntarily opening the refrigerant release mechanism at a selected moment in time.

A vaginal drug delivery system includes a device formed of porous material that holds a flowable therapeutic formulation. The device, preferably in a soft, prewetted state, is inserted into the vagina to reside typically at or near the cervix where it continuously releases the flowable therapeutic formulation through its outer surface which is in contact with the vaginal surfaces. In operation, the flowable therapeutic formulation migrates via capillary forces from a reservoir that is centrally located in the device and through a covering that envelopes the reservoir.

A check valve for connection in a fuel tank filler tube. The valve has a tubular body with a plurality of radially inwardly extending vanes or ribs in the inlet end about a portion of the circumference. The ribs are tapered in the flow direction to deflect the end of a siphoning hose to an offset opening. A valve seat and poppet with a tapered surface are disposed downstream of the ribs, clearance apertures are formed in the side of the tubular body downstream of the valve seat. The tapered surface of the poppet, upon being opened by insertion of the end of a siphoning hose deflects the hose outwardly through the clearance apertures to facilitate further insertion into the tank. The poppet is biased normally closed by a spring.

An electrosurgical instrument including a probe tube for transporting fluid, at least one electrode for devitalizing tissue, and at least one conducting foil electrical lead arranged along the longitudinal axis of the probe tube for providing a high frequency (RF) voltage at the electrode. A method of producing an electrosurgical instrument, including applying a conductive foil to a probe tube that extends along the longitudinal axis of the probe tube, and providing at least one electrode on the probe tube, wherein the electrode electrically connects to the conductive foil.

A slide hammer includes three major components, namely, a guide sleeve, a plunger and an impact head. The plunger is inserted within the guide sleeve. The impact head is secured within the distal end of the guide sleeve, and has a portion which protrudes from the guide sleeve distal end. The impact head is able to freely slide within a segmented portion of the guide sleeve distal end, or the impact head movement may be controlled by a spring. The plunger is slid within the guide sleeve at a selected velocity in order to contact the portion of the impact head slidably secured within the guide sleeve. The force of the plunger striking the impact head is transmitted through the impact head to a targeted object in contact with the protruding portion of the impact head. The impact head may be fitted with various types of tips. Each of the tips has particular advantages in applying force to a targeted object.

A drill bit consists of a bit body having a forward end and a slot in the forward end to hold a hardened cutting blade. The bit body has a table near the center of the blade to reduce the speed at which the drill bores into hard material. The blade has a central slot extending into the forward end thereof such that the slot defines inner side walls and a bridge extending between the inner side walls. The bridge has sloping sides the define a central cutting edge so as to cut particles of hard material accumulating in the slot. The inner side walls intersect the leading faces of the blade and form cutting edges which further cut particles loosened at the center of the cut. Also, relief flats relieve the concentration of forces at the ends of the primary cutting edges of the blade.

A set of cooling air blowers for machines which require cooling air during operation. The blowers each include an outlet having an anti-reverse flow feature for preventing the flow of air into the blower from externally of the machine should the blower fail, thereby ensuring that the remaining operating blowers are able to maintain a normal and adequate flow of cooling air through the air inlet of the machine and outwardly through the outlets of the remaining operating blowers. Each blower generally includes a blower housing having an inlet, an outlet, and an internal cavity in which an impeller is rotatably disposed, the impeller driven by an electrical motor mounted within the blower housing. The outlet of each blower housing includes a plurality of louvers movable between a first, open position in which the louvers are positioned by contact with the airflow upon rotation of the impeller to allow heated exhaust air to exit the blower housing through the outlet, and a second, closed position in which the louvers are positioned by gravity to substantially block the outlet when the impeller is stationary.

A modular tower assembly particularly suited for deployment in a parking lot area for collecting solar energy and precipitation includes left-hand and right-hand support modules, each having a base and a support pedestal having a bottom affixed to one end of the base. A solar panel mount has one end affixed to a pedestal top and cantilevered over the base. The left-hand support module pedestal is joined to the right hand support module pedestal such that the base of the left-hand module extends oppositely from the base of the right-hand module. A solar panel assembly is affixed to each of solar panel mounts. The modular assembly is particularly well-adapted for large scale collection of solar power for subsequent conversion to electrical power directly connected to a local power grid. Each tower is further adapted for the collection of fresh water from natural precipitation.

A touch sensor includes a substrate with a touch region, and a series resistor chain for creating electrical fields across the touch region. The resistor chain comprises a plurality of conductive electrodes that to form overlap resistors therebetween. The electrodes have inner portions that are separated by junctions. The touch sensor also includes insulating regions between the touch region and the resistor chain. The insulating regions are separated by gaps to provide a plurality of conductive pathways to the touch region, thereby minimizing non-linear ripple along the sourcing sides of the substrate. Some of the gaps are junction gaps that are formed between the touch region and junctions. Electrically conductive islands are placed within the junction gaps to provide an electrical node within each junction gap, thereby preventing bunching of equipotential lines within the junction, and minimizing non-linear ripple along the non-sourcing sides of the substrate.