366results about How to "Improve energy transfer" patented technology

A bipolar surgical instrument that includes opposing grips that can engage the tissue. A current is delivered from an electrosurgical power source to electrodes disposed on the grips to cauterize the tissue. The electrode configurations provide efficient cauterization of the tissue. In some embodiments, the positive and negative electrodes will be offset from each other to prevent shorting and to provide a thin line of coagulation heating to the gripped tissue. In some embodiments the electrodes are removably coupled to the grips through nonconductive sleeves. In some embodiments, the first electrode is disposed in a groove and the second electrode is disposed on a boss.

An improved line of golf clubs tailored to the golfer. The face wall firstly is designed so that the face wall modulus of elasticity increases from a low modulus for the low swing speed range to progressively higher modula for the higher swing speed ranges. Face modulus can be altered by a variety of techniques including face wall thinning, material selection and heat treatment or a combination thereof. In each of the swing speed range clubs, the face has a first modulus of elasticity determined by the face itself and after the face deflects to a predetermined value, the face modulus is significantly increased by a secondary wall parallel to and closely spaced behind the face wall.

A flow measuring apparatus (300, 500) measures a fluid flow (130) within a conduit (120) including a wall (110). The apparatus (300, 500) includes a transducer arrangement including at least two transducers (100A, 100B) for alternately emitting and receiving ultrasonic radiation through the conduit wall (110) and the flow (130). The apparatus (300, 500) also includes a signal processing arrangement (310) for generating signals to excite the transducer arrangement (100A, 100B) and for processing received signals provided by the transducer arrangement (100A, 100B) for generating output signals from the signal processing arrangement (310) indicative of properties of the flow. The transducer arrangement (100A, 100B) in cooperation with the conduit (120) provides a first path (200) for Lamb-wave ultrasonic radiation coupling directly from a first of the at least two transducers (100A, 100B), to a second of said at least two transducers to generate a first received signal. The transducer arrangement (100A, 100B) in cooperation with the conduit (120) provides at least one second path (210) for ultrasonic propagation along the wall (100) via Lamb waves coupling to at least a portion of the flow (130) from a first of the at least two transducers (100A, 100B) to a second of the at least two transducers (100A, 100B) to generate a second received signal. The signal processing arrangement (310) determines from said first and second received signals ultrasonic radiation propagation time periods through the first path (200) and through the at least one second path (210), and to perform computational operations on the propagation time periods to determine properties of the flow including, but not limited to, at least one of: fluid flow velocity (v) in the conduit (120), a sound velocity (c) through the fluid (130).

A compound bow or crossbow employs bowstring cams with bowstring cam grooves and power cord cam grooves. Preferably a pair of generally identical power cord cam grooves are positioned axially above and below the bowstring cam groove. The power cords are anchored to a fixed anchor point, e.g., a pylon, on the near end of the riser or on the near side of the crossbow bar or stock. The power cords do not cross over to the other limb. The reduction in the number of cam wheels and pulleys and in the number of strings or cords results in greater efficiency and higher transfer of energy from the bow to the arrow or bolt. There is no drop-off in pull weight at full draw. The bolt or arrow accelerates throughout the travel of the bowstring, resulting in significantly higher velocity.

A method and apparatus are provided for temporally stretching and smoothing of the pulses of an output beam of excimer and lithography lasers. The method and apparatus are based upon providing an optical delay line or circuit having a plurality of optical reflectors and a plurality of beam recombiners or splitters so arranged as to divide the pulse into numerous portions which vary in their travel time through the circuit. As a result, the energy of the incident pulse is greatly stretched and smoothed.

A skate having a skate boot with a non-lasted boot shell, the shell having a first non-lasted three-dimensional sub-shell and a second non-lasted three-dimensional sub-shell, the second sub-shell being interior to and adjoining the first sub-shell, the first sub-shell comprising a first material having a first density and the second sub-shell comprising a second material having a second density, the second density being less than the first density, the shell being shaped so as to have a heel portion, an ankle portion, a lateral portion, a medial portion, and a sole portion; and a ground-engaging assembly disposed on an underside of the skate. Additional sub-shells are possible. Methods of manufacturing the skate boot shell, including molding and build-up, are also disclosed.

The invention provides a light emitting diode. The light emitting diode comprises a substrate, positive pole, hole transfer layer, emitting layer, electron transport layer and negative pole. The emitting layer comprises quantum dots and energy transfer molecules. The energy transfer molecules crosslink with the quantum dots by click chemistry. The energy transfer molecules, as dispersion medium of the quantum dots, have high electron / hole carrier injection ability, which can promote the production of excitons in energy transfer molecules and realize effective energy transfer from energy transfer molecules to fluorescent quantum dots. At certain voltage, the device can emit within the wavelength range of 380-900nm, with the maximum emitting peak covering ultraviolet to dark red light range. The invention further discloses the fabrication method and electronic display equipment of a light emitting diode.

The features of this invention allow construction and operation of a variety of high voltage, high repetition rated pulse generators of the Marx type that are switched with photon initiated semiconductor switches of the closing type. The photon initiated semiconductor switches can be constructed with bulk materials or in layered devices such as thyristors. Variations on the invention permit the formation of shaped high voltage pulses; particularly those that are nearly rectangular: with controlled rise and fall times, minimal or no overshoot, and minimal voltage ripple.

A golf club head having an insert mechanically coupled to a frame. The construction allows a golf club head to be fabricated with a combination of dissimilar materials, resulting in a club head with improved performance. In some embodiments, the insert comprises an outer insert material, an inner insert material, and a sandwiched material. The sandwiched material may be constructed with a plurality of voids having a varying distribution, thereby resembling a biological structure. Methods for forming a golf club having an insert mechanically coupled to a frame are also disclosed.

A method and apparatus wherein a material or object to be tested is placed on a base support. A stopper assembly having a stopper tip on one end in contact with the test material or object, and a washer on the opposite end attached to a rod. A projectile is propelled with a selected level of force along the rod and impacts the washer, which transmits the force of impact through the stopper tip to the test material or object. The level of propelling force, the mass of the projectile, the construction of the stopper assembly and the location of impact on the test material or object may be precisely adjusted to simulate real-life impacts.

Apparatus is provided for ablating tissue of a patient by applying ultrasound energy to the tissue. The apparatus is typically delivered to the targeted tissue via a catheter and includes an ultrasound array, which is adapted to be driven as a phased array to concentrate the ultrasound energy on the targeted tissue while avoiding surrounding tissue.

Medical devices and methods for using medical devices are disclosed. An example medical device may include an open-irrigated ablation catheter. The open-irrigated ablation catheter may include a catheter body, an electrode tip body with irrigation ports at a distal end, and a coolant conduit. The distal end of the coolant conduit may extend into a proximal portion of the electrode tip body. Fluid flow from the coolant conduit may be diverted proximally and / or towards the wall of the electrode tip body by one or more openings proximal of a closed distal end of the conduit or by a structure blocking and diverting flow from an open distal end of the conduit.

The ablation systems, ablation probes, and corresponding methods according to the present disclosure reduce or eliminate energy radiating from an ablation probe into the environment. Some ablation probes include a retractable sheath that shields at least the radiating portion of the ablation probe. The retractable sheath and / or the ablation probe may include conduits through which a fluid may flow to shield the radiating portion and to drive the retractable sheath to an extended state. Other ablation probes include apertures defined in the probe walls through which the fluid can flow to expand a balloon surrounding the radiating portion. Yet other ablation probes include a thermal indicator to indicate the temperature of the ablation probe to a user. The ablation systems include fluid circuits and associated mechanical controls for varying the contents and / or flow rate of the fluid provided to the radiating portion of the ablation probe.