508results about How to "Drag minimization" patented technology

The lower extremity exoskeleton comprises two leg supports connectable to person's lower limbs and configured to rest on the ground during their stance phase. Each leg support comprises a thigh link and a shank link; a knee joint configured to allow flexion and extension between the shank link and the thigh link. The lower extremity exoskeleton further comprises an exoskeleton trunk connectable to the person'supper body. The exoskeleton trunk is connectable to the thigh links of the leg supports allowing for the flexion and extension between the leg supports and the exoskeleton trunk. Two torque generators are coupled to each of the knee joints. A power unit, capable of providing power, is coupled to the torque generators. In operation when a leg support is in a stance phase and climbing a slope or stairs, the power unit injects power into the respective torque generator thereby extending the respective knee angle. When a leg support is in stance phase and not climbing a slope or stairs, the power unit does not inject any power to the respective torque generator, but without dissipating any stored power in said power unit, it forces the torque generator to resist flexion of the respective knee joint. When a leg support is in a swing phase, the power unit does not inject any power to the respective torque generator, but without dissipating any stored power in said power unit, it forces the torque generator to minimize its resistance to knee flexion and extension.

A shielded three-terminal flat-through EMI / energy dissipating filter includes an active electrode plate through which a circuit current passes between a first terminal and a second terminal, a first shield plate on a first side of the active electrode plate, and a second shield plate on a second side of the active electrode plate opposite the first shield plate. The first and second shield plates are conductively coupled to a grounded third terminal. In preferred embodiments, the active electrode plate and the shield plates are at least partially disposed with a hybrid flat-through substrate that may include a flex cable section, a rigid cable section, or both.

A barbed suture includes a flexible thread having a core with a leading end, a trailing end, and a central axis. The barbed suture includes a first flexible flap connected to the core, the first flap extending between the leading and trailing ends of the core, and a second flexible flap connected to the core, the second flap extending between the leading and trailing ends of the core. The flexible flaps and the core have an S-shaped profile when viewed in cross-section. The barbed suture includes first and second slots formed in the respective first and second flaps for dividing the flaps into first and second barbs projecting from the core, whereby each slot extends outwardly from the core and rearwardly toward the trailing end of the core.

Cardiac catheters, including a lasso catheter, are provided for use in a system for electrical mapping of the heart has an array of raised, perforated electrodes, which are in fluid communication with an irrigating lumen. There are position sensors on a distal loop section and on a proximal base section of the catheter. The electrodes are sensing electrodes that may be adapted for pacing or ablation. The raised electrodes securely contact cardiac tissue, forming electrical connections having little resistance.

A semiconductor system (200) of one or more semiconductor interposers (201) with a certain dimension (210), conductive vias (212) extending from the first to the second surface, with terminals and attached non-reflow metal studs (215) at the ends of the vias. A semiconducting interposer surface may include discrete electronic components or an integrated circuit. One or more semiconductor chips (202, 203) have a dimension (220, 230) narrower than the interposer dimension, and an active surface with terminals and non-reflow metal studs (224, 234). One chip is flip-attached to the first interposer surface, and another chip to the second interposer surface, so that the interposer dimension projects over the chip dimension. An insulating substrate (204) has terminals and reflow bodies (242) to connect to the studs of the projecting interposer.

A catheter 1 suitable for advancement through a body passageway of a patient. The catheter 1 comprises a catheter body 4 which is flexible to provide the necessary trackability for the catheter 1 to advance through a body passageway, and two stainless steel reinforcement wires 5 extending along the catheter body 4 which provide the necessary pushability to advance the catheter 1 through the passageway. The reinforcements 5 are positioned diametrically opposed to one another by approximately 180 degrees on opposite sides of the longitudinal axis of the catheter 1, and the catheter body 4 is relatively soft and twistable. This configuration enables the entire catheter 1 to spontaneously twist during advancement so that the reinforcements 5 orientate themselves along a plane of neutral bending during advancement of the catheter 1. In this way, any resistance to the trackability of the catheter 1 due to the stiff reinforcements 5 is minimized.

A heat sink comprises a base panel having a top surface and a bottom surface. A plurality of pin fins extend outwardly from the top surface and each fin has a cross-sectional configuration with two radiuses, a first radius and a second radius, wherein the first radius is larger than the second radius. The first and second radiuses are tangentially interconnected by intermediate portions, giving the pin fin cross-sectional configuration a raindrop shape, thereby generating low pressure drop across the heat sink by minimizing the drag force effects and maintaining large exposed surface area available for heat transfer.

The lower extremity exoskeleton comprises two leg supports connectable to person's lower limbs and configured to rest on the ground during their stance phase. Each leg support comprises a thigh link and a shank link; a knee joint configured to allow flexion and extension between the shank link and the thigh link. The lower extremity exoskeleton further comprises an exoskeleton trunk connectable to the person'supper body. The exoskeleton trunk is connectable to the thigh links of the leg supports allowing for the flexion and extension between the leg supports and the exoskeleton trunk. Two torque generators are coupled to each of the knee joints. A power unit, capable of providing power, is coupled to the torque generators. In operation when a leg support is in a stance phase and climbing a slope or stairs, the power unit injects power into the respective torque generator thereby extending the respective knee angle. When a leg support is in stance phase and not climbing a slope or stairs, the power unit does not inject any power to the respective torque generator, but without dissipating any stored power in said power unit, it forces the torque generator to resist flexion of the respective knee joint. When a leg support is in a swing phase, the power unit does not inject any power to the respective torque generator, but without dissipating any stored power in said power unit, it forces the torque generator to minimize its resistance to knee flexion and extension.

An electrochemical microfluidic device has one or a plurality of microstructures, such as a microchannel, in which an electrically conductive means is integrated to reduce the ohmic resistance within the microstructure and hence to improve electrochemical measurements particularly when large current densities are involved. The electrically conductive means can be connected as a counter-electrode and can be used to re-generate the product of the reaction occurring at the working electrode. A method of fabricating electrochemical microfluidic devices comprising such an electrically conductive means is also disclosed. The invention may particularly be used in all electrochemical sensor applications where detection is performed in small volumes.

Cardiac catheters, including a lasso catheter, are provided for use in a system for electrical mapping of the heart has an array of raised, perforated electrodes, which are in fluid communication with an irrigating lumen. There are position sensors on a distal loop section and on a proximal base section of the catheter. The electrodes are sensing electrodes that may be adapted for pacing or ablation. The raised electrodes securely contact cardiac tissue, forming electrical connections having little resistance.

This invention discloses an improved trenched metal oxide semiconductor field effect transistor (MOSFET) device that includes a trenched gate surrounded by a source region encompassed in a body region above a drain region disposed on a bottom surface of a substrate. The MOSFET cell further includes a shielded gate trench (SGT) structure below and insulated from the trenched gate. The SGT structure is formed substantially as a round hole having a lateral expansion extended beyond the trench gate and covered by a dielectric linen layer filled with a trenched gate material. The round hole is formed by an isotropic etch at the bottom of the trenched gate and is insulated from the trenched gate by an oxide insulation layer. The round hole has a lateral expansion beyond the trench walls and the lateral expansion serves as a vertical alignment landmark for controlling the depth of the trenched gate. The MOSFET device has a reduced gate to drain capacitance Cgd depending on the controllable depth of the trenched gate disposed above the SGT structure formed as a round hole below the trenched gate.

A septum is disclosed that can be utilized in a catheter assembly to selectively seal an opening in the catheter assembly. The septum has a tube portion and a plug portion. The plug portion has a slit extending through it. The septum can transition from a non-collapsed state to a collapsed state. When the septum is in a non-collapsed state, the plug portion is offset from the tube portion such that some of the length of the slit extends outward from the distal end of the tube portion. When the septum transitions to the collapsed state, the plug portion is moved inward into the internal cavity such that some of the length of the slit may or may not extend outward from the distal end of the tube portion.

Cardiac catheters, including a lasso catheter, are provided for use in a system for electrical mapping and ablation of the heart has an array of raised, circumferential ring bump electrodes wherein each circumferential electrode has multiple perforations, which are in fluid communication with a cavity or chamber formed under the surface of the circumferential ring. The cavity is formed 360° around the outer surface or loop lumen of the lasso segment of the catheter which is in fluid communication with a breach hole (or holes) drilled through loop lumen and in fluid communication with an irrigating lumen. Each circumferential ring has a breach hole (or holes) that range from smaller to larger from the proximal end of the loop segment to the distal end of the loop segment in one embodiment.

A system (100) for controlling a rotorcraft (1) including a rotor (10), at least one variable-pitch propulsion propeller (6L, 6R), and a motor (5) for driving the rotor and the propeller(s), the system includes:a member (101, 101A, 102, 103, 104) for generating a propeller pitch setpoint (θp*+θd*, θp*−θd*) as a function at least of a thrust variation command (TCL);a member (105, 105A) for generating a setpoint (RPM*) for the drive speed (RPM) of the rotor and the propeller(s), as a function at least of the travel speed (VTAS) of the rotorcraft; anda member (106) for generating a setpoint (NG*) for the engine speed as a function at least of the thrust command (TCL), of the drive speed setpoint (PTM*), and of a rotor collective pitch command (θ0).

Unitary accommodating intraocular lenses (AIOLs) including a haptics system for self-anchoring in a human eye's ciliary sulcus and a resiliently elastically compressible shape memory optical element having a continuously variable Diopter strength between a first Diopter strength in a non-compressed state and a second Diopter strength different than its first Diopter strength in a compressed state. The unitary AIOLS include an optical element with an exposed trailing surface and are intended to be used with a discrete base member for applying an axial compression force against the exposed trailing surface from a posterior direction. Some unitary AIOLs are intended to be used with either a purpose designed base member or a previously implanted standard in-the-bag IOL. Other unitary AIOLs are intended to be solely used with a purpose designed base member.

An HME Filter is provided having with an integral housing having minimal components which eliminating components at the circuit “Y” connector. A closed circuit gas flow is maintained whether an internal filter material is or is not engaged, and with or without a nebulizer aerosolizing medications. The HME SHUTTLE continues to maintain the same closed circuit gas flow during the HME filter materials insertion into the HME SHUTTLE, throughout the course of the HME filter's use in the closed gas flow circuit and during the HME filter materials removal from the HME SHUTTLE. The placement for optimal patient care is to be located between the connection of inhalation and exhalation sides of mechanical ventilator circuit and endotracheal tube of an intubated patient. The HME SHUTTLE also accommodates the docking port for the use of an external nebulizer.

In an amorphous silicon thin film transistor-liquid crystal display device and a method of manufacturing the same, gate patterns including a gate line and a gate electrode are formed on an insulation substrate having a display region and a driving circuit region on which a plurality of shift registers are formed, a gate insulating film, active layer patterns and data patterns including source and drain electrodes are formed successively on the substrate, a passivation layer on the substrate has a first contact hole exposing a drain electrode of the display region and second and third contact holes respectively exposing a gate electrode and source and drain electrodes of a first transistor of each of the shift registers, an electrode patterns on the passivation layer include a first electrode connected to the drain electrode of the display region through the first contact hole and a second electrode connecting the gate electrode to the source and drain electrodes of the first transistor through the second and third contact holes, and the gate driving circuit including the shift registers and the wirings are integrated on the insulating substrate without an additional process, thereby simplifying the manufacturing process.

The invention relates to a solar tracker characterized by having photovoltaic panels arranged in spaced rows at different levels and two slopes, favouring their ventilation and the expansion of the frame; the panels being fixed by means of yokes and clips to a support (3) anchored to the H-shaped frame (4) resting on swivelling supports of a tower having little height supporting the entire structure, its tilt being variable by means of a tension device, the side longitudinal beams (4a) being extendible to house more rows of panels (1) since the remaining structural components, tower, bearings, column and base have been oversized for that purpose.

An example liner assembly includes a backing plate that supports a cellular structure covered by a perforated face sheet including a plurality of openings. Each of the plurality of openings is of a size determined to provide desired acoustic performance.

A catheter having a distal tip with an inner layer formed of a polymeric material having a coefficient of friction and surface energy which are relatively low, such that the inner layer has a lubricious, non-polar inner surface repulsive to polar liquids. As a result, blood coagulation in the distal tip, and adherence of the distal tip on the guidewire are prevented or minimized.

This invention discloses bottom-source lateral diffusion MOS (BS-LDMOS) device. The device has a source region disposed laterally opposite a drain region near a top surface of a semiconductor substrate supporting a gate thereon between the source region and a drain region. The BS-LDMOS device further has a combined sinker-channel region disposed at a depth in the semiconductor substrate entirely below a body region disposed adjacent to the source region near the top surface wherein the combined sinker-channel region functioning as a buried source-body contact for electrically connecting the body region and the source region to a bottom of the substrate functioning as a source electrode. A drift region is disposed near the top surface under the gate and at a distance away from the source region and extending to and encompassing the drain region. The combined sinker-channel region extending below the drift region and the combined sinker-channel region that has a dopant-conductivity opposite to and compensating the drift region for reducing the source-drain capacitance.

A method of fabricating a solar cell comprising: providing a semiconducting wafer having a front surface, a back surface, and a background doped region; performing a set of ion implantations of dopant into the semiconducting wafer to form a back alternatingly-doped region extending from the back surface of the semiconducting wafer to a location between the back surface and the front surface, wherein the back doped region comprises laterally alternating first back doped regions and second back doped regions, and wherein the first back doped regions comprise a different charge type than the second back doped regions and the background doped region; and disposing a back metal contact layer onto the back surface of the semiconducting wafer, wherein the back metal contact layer is aligned over the first and second back doped regions and is configured to conduct electrical charge from the first and second back doped regions.

A semiconductor system (200) of one or more semiconductor interposers (201) with a certain dimension (210), conductive vias (212) extending from the first to the second surface, with terminals and attached non-reflow metal studs (215) at the ends of the vias. A semiconducting interposer surface may include discrete electronic components or an integrated circuit. One or more semiconductor chips (202, 203) have a dimension (220, 230) narrower than the interposer dimension, and an active surface with terminals and non-reflow metal studs (224, 234). One chip is flip-attached to the first interposer surface, and another chip to the second interposer surface, so that the interposer dimension projects over the chip dimension. An insulating substrate (204) has terminals and reflow bodies (242) to connect to the studs of the projecting interposer.

A recessed dielectric antifuse device includes a substrate and laterally spaced source and drain regions formed in the substrate. A recess is formed between the source and drain regions. A gate and gate oxide are formed in the recess and lightly doped source and drain extension regions contiguous with the laterally spaced source and drain regions are optionally formed adjacent the recess. Programming of the recessed dielectric antifuse is performed by application of power to the gate and at least one of the source region and the drain region to breakdown the dielectric, which minimizes resistance between the gate and the channel.

A system (100) for controlling a rotorcraft (1) including a rotor (10), at least one variable-pitch propulsion propeller (6L, 6R), and a motor (5) for driving the rotor and the propeller(s), the system includes:a member (101, 101A, 102, 103, 104) for generating a propeller pitch setpoint (θp*+θd*, θp*−θd*) as a function at least of a thrust variation command (TCL);a member (105, 105A) for generating a setpoint (RPM*) for the drive speed (RPM) of the rotor and the propeller(s), as a function at least of the travel speed (VTAS) of the rotorcraft; anda member (106) for generating a setpoint (NG*) for the engine speed as a function at least of the thrust command (TCL), of the drive speed setpoint (RTM*), and of a rotor collective pitch command (θ0).

A colonoscope includes an elongated body extending between a proximal and a distal end, a tip arranged on the distal end of the elongated body, and a handle arranged on the proximal end of the elongated body, wherein the elongated body generally increases in diameter and flexibility from the distal end to the proximal end. The elongated body preferably has a plurality of segments, each more proximal segment having a larger diameter than each adjacent more distal segment and / or each more proximal segment being more flexible than each adjacent more distal segment. A method for manufacturing a colonoscope includes selecting a length for each segment such that a most distal segment will extend far enough into a corresponding most distal section of the colon to be examined with each more proximal segment advanced through a corresponding more proximal section of the colon.

Compositions and methods include a new strain of Bacillus velezensis having growth promoting activity and activity against plant pathogens. The compositions are useful for benefiting plant growth and / or conferring protection against a pathogenic infection when applied to plant foliage, flowers, fruits, bark, roots, seeds, callus tissue, grafts, cuttings, surrounding soil or growth medium, and soil or growth medium concomitant with sowing seed and planting callus tissue, grafts, and cuttings. The compositions containing the Bacillus velezensis RTI301 strain can be applied alone or in combination with other microbial, biological, or chemical insecticides, fungicides, nematicides, bacteriocides, herbicides, plant extracts, plant growth regulators, and fertilizers. In one example, the Bacillus velezensis RTI301 strain can be delivered to the plant as part of an integrated pest management program, with other microbial or chemical insecticides, fungicides, nematicides, bacteriocides, herbicides, plant extracts, and plant growth regulators.