881 results about "Mechanical impact" patented technology

An improved golf club head has at least one fin, rib or arch extending inside the club head structure and varying in height. The fins run along the inside of the club head perimeter structure. The fins are perpendicular to the face resulting in stiffening and strengthening of the club head, thereby resisting structural deformation and mechanical shockwave migration that occurs upon impact with the golf ball. The fins traverse the length or a portion of the length of the club head along an internal perimeter. The fins are incorporated on either the crown and/or the sole, but can be added to other portions of the club head, such as the skirt or club face should additional stiffening and strengthening be desired. The fins, can vary in size and shape and location depending on the desired stiffness and on the size, shape and material of the club head.

An injection syringe including a device for preparation of an injection in situ, useful to the injection which is liable to suffer chemical changes if left for a long time in the state of solution or dispersion ready to inject. The injection syringe is portable by a patient who may prepare a necessary injection in situ with the use of a device included in the syringe which will automatically perform an injection with a prescribed dosage. The injection syringe includes a device for preparation of an injection, whereby mechanical impacts affecting the medicine and consequently, chemical changes with a medicine would be minimized during the step of dissolving the medicine. The syringe as noted is especially useful for preparation of injection and injection of human growth hormones, interferon and various polypeptides which are of an environmentally sensitive nature and liable to suffer chemical changes if left for a long time in the state of solution or dispersion.

The invention relates to a wind turbine and a method for operating the wind turbine planted in the floor of a body of water. The wind turbine includes a support structure and a rotor, which is arranged on the support structure. The rotor has a rotor blade. The wind turbine operates in a trundle mode in order to reduce the oscillations in the support structure created through mechanical impacts on the support structure.

A thermally bonded filtration media that can be used in high temperature conditions in the absence of any loss of fiber through thermal effects or mechanical impact on the fiber components is disclosed. The filter media can be manufactured and used in a filter unit or structure, can be placed in a stream of removable fluid, and can remove a particulate load from the mobile stream at an increased temperature range. The combination of bi-component fiber, other filter media fiber, and other filtration additives provides an improved filtration media having unique properties in high temperature, high performance applications.

A system includes a catheter including an elongated carrier, a balloon about the carrier in sealed relation thereto, the balloon being arranged to receive a fluid therein that inflates the balloon, and first and second electrodes within the balloon arranged to carry a voltage there-across including an initial high electrical voltage at an initial low current. The initial high electrical voltage causes an electrical arc to form across the first and second electrodes within the balloon. The electrical arc causes a gas bubble within the liquid, a high current to flow through the first and second electrodes, a decrease in the initial high electrical voltage, and a mechanical shock wave within the balloon. The system further includes a power source that provides the first and second electrodes with a drive voltage that creates the initial high electrical voltage at the initial current and that terminates the drive voltage in response to the decrease in the initial high electrical voltage.

The object of the present invention is to provide an ultrasonic probe of high performance and high quality. Disclosed is an ultrasonic probe comprising a high molecular material 11 having a conductive layer 10 and is disposed between a piezoelectric element 1 and an acoustic matching layer 7, wherein the high molecular material has an acoustic impedance substantially equal to that of the acoustic matching layer 7. The ultrasonic probe configured as above can be formed into a slim shape which is easy to operate without degrading the performance thereof such as sensitivity, frequency characteristic or the like. The ultrasonic probe is structured so as not to cause electrical problem due to breaking of wire even if the piezoelectric element is cracked by a mechanical impact or the like, and thus a high quality ultrasonic probe can be provided, and the noise can be reduced.

An engine start system which may be employed in automotive idle stop systems. To start an engine, the system brings a pinion gear into engagement with a ring gear coupled to the engine and turns on an electric motor to rotate the ring gear through the pinion gear to crank the engine. When it is requested to start the engine during deceleration of the engine before stop thereof, the system thrusts the pinion into engagement with the ring gear and then turns on the motor to rotate the pinion gear, in other words, delays the activation of the motor until after the pinion gear has engaged the ring gear. This minimizes mechanical impact or noise arising from the engagement of the pinion gear with the ring gear and improves the reliability in engagement with the ring gear during the deceleration of the engine and durability of the system.

The invention discloses a charge-discharge battery pack equilibrium management system which comprises N batteries, N-1 lossless equilibrium charge-discharge circuits, a signal acquisition circuit, a master control unit and a drive circuit, wherein each lossless equilibrium charge-discharge circuit comprises an energy storage inductor, an energy storage capacitor, a first semiconductor switch device and a second semiconductor switch device and is characterized in that the energy storage capacitor is connected in series between a switch back end of the first semiconductor switch device and a switch front end of the second semiconductor switch device. The charge-discharge battery pack equilibrium management system has the obvious effects that the capacitor in the equilibrium mode plays a role of energy transfer, which reduces the power consumption, has more advantages in volume and weight, and has stronger mechanical impact resistance. The charge-discharge battery pack equilibrium management system realizes the energy equilibrium of batteries, dispensing with a complicated energy transfer device, and has the advantages of simple structure, easy realization and convenient maintenance and expansion.

Provided are a micro gas sensor for measuring a gas concentration configured to achieve a high heating and cooling rate of a gas sensitive layer, achieve temperature uniformity, and achieve durability against thermal impact and mechanical impact; and a method for manufacturing the micro gas sensor. The micro gas sensor includes: a vacuum cavity disposed in a substrate; a support layer covering the vacuum cavity; a sealing layer sealing the support layer and the vacuum cavity; a micro heater disposed on the sealing layer; a plurality of electrodes disposed on the micro heater, insulated from the micro heater; and a gas sensitive layer covering the electrodes.

A cellular material that can provide a unique combination of properties and characteristics for a variety of applications requiring a cellular solid that possesses one or more of the following characteristics: (1) efficient load support in one or more directions, (2) excellent mechanical impact energy absorption and vibration suppression potential, (3) high convection heat transfer throughout, (4) low pumping requirements for fluid throughput, for example in a second direction orthogonal to one or more load-bearing directions, (5) a substantially linear dependence of the Young's and shear moduli along with the tensile, compressive and shear yield strengths upon relative density (6) a potentially inexpensive textile-based synthetic approach, (7) excellent filtration potential, (8) a high surface area to volume ratio for enhanced activity as a catalyst or catalyst support (9) interconnected, open porosity for device storage, biological tissue in-growth or other functionalities requiring open space, and (10) extendibility to a wide variety of materials.

The invention discloses a symmetric rotation piezoelectric generation device which belongs to the technical field of micro energy and is particularly suitable for collecting varying rotation mechanical energy in a low-frequency vibration environment. The generation device consists of a rotation shaft, left and right bases, left and right bearings, left and right piezoelectric bi-crystal beam arrays, an excitation wheel permanent magnet array and an excitation wheel. The excitation wheel is in rigid connection with the rotation shaft; and the rotation shaft is supported in the center holes of the left and the right bases by the left and the right bearings respectively. In the generation device, the left and the right piezoelectric bi-crystal beam arrays are completely symmetric in structure. The excitation wheel permanent magnet array consisting of multiple excitation wheel permanent magnets is uniformly arranged at the periphery of the left side of the excitation wheel; each piezoelectric bi-crystal beam is composed of a permanent magnet block, a copper beam and a piezoelectric ceramic chip; and the piezoelectric bi-crystal beam array consisting of the left and the right piezoelectric bi-crystal beams is uniformly mounted on the left and the right bases. The device transfers the acting force by use of non-contact permanent magnetic force, thereby avoiding the energy loss and service life reduction caused by mechanical impact, and increasing the response bandwidth of a common rotation piezoelectric generation device.

Some embodiments of the present invention include a method of differentiating touch screen users based on characterization of features derived from the touch event acoustics and mechanical impact and includes detecting a touch event on a touch sensitive surface, generating a vibro-acoustic waveform signal using at least one sensor detecting such touch event, converting the waveform signal into at least a domain signal, extracting distinguishing features from said domain signal, and classifying said features to associate the features of the domain signal with a particular user.

A thermal barrier coating system is provided. The thermal barrier coating system may include a first layer of ceramic insulating material (21) (see FIG. 1) disposed on a substrate surface. The thermal barrier coating system may also include a second layer of ceramic insulating material (25) disposed on the first layer of ceramic insulating material. The second layer of ceramic insulating material may include one or more crack arrestors therein. A third layer of ceramic insulating material (26) is disposed on the second layer of ceramic insulating material. The third layer may be configured as a sacrificial layer to absorb mechanical shock generated in the event of a foreign object collision with the third layer. The one or more crack arrestors in the second layer can avoid propagation towards the first layer of one or more cracks that can form in the event of the foreign object collision with the third layer.

The invention discloses a low-temperature lead-free solder alloy, containing larger than or equal to 30% of and smaller than or equal to 60% of Bi, larger than 0.001% of Si and smaller than or equal to 0.02% of Si, as well as microalloy elements (alterant), rare earth elements, antioxidant elements and the balance of Sn and inevitable impurities. The large crystal grains of a Bi phase in a traditional Sn-Bi alloy system and the problem of reliability of brittle rupture of a welding joint is caused by that Bi is segregated at a Cu/Cu3Sn interface to form a brittle Bi layer in a long-term service process of the traditional Sn-Bi alloy system are effectively improved, and the mechanical impact and falling resistance of the traditional Sn-Bi system alloy can be greatly improved.

The application discloses a rack end protection method of an electric power steering system. When a rack of a steering gear moves towards the end of the rack and enters a rack end protection area, an ECU (electronic control unit) of the electric power steering system takes a rotating angle of a steering wheel, the speed of the rotating angle and rotating torque as input to calculate a rack end protection gain value which serves as a multiplier during assisting torque calculation. The rack end protection gain value is the product of a basic gain coefficient, a rotating speed gain coefficient and a rotating torque gain coefficient. The basic gain coefficient decreases progressively as the absolute value of the rotating angle of the steering wheel increases. The rotating speed gain coefficient decreases progressively as the absolute value of the rotating angle of the steering wheel increases. The rotating torque gain coefficient increases progressively as the absolute value of the rotating angle of the steering wheel increases. According to the rack end protection method of the electric power steering system, during working conditions of rack ends, current output can be limited, temperature rise can be reduced and mechanical impact of the rack ends can be avoided.

A method of indicating the presence of mechanical impact is used with a low-ductility material, such as a composite material, having a tensile elongation to failure of less than about 2 percent. The method includes preparing an indicator paint having an impact-sensitive component that produces a visible change when subjected to a mechanical impact, applying the indicator paint to the surface of the low-ductility material, placing the low-ductility material having the indicator paint thereon into circumstances where it may be subject to the mechanical impact, and thereafter inspecting the low-ductility material having the indicator paint thereon for the presence of the visible change. The method may be used to establish design criteria for the low-ductility material by establishing an impact-effect threshold value from the step of inspecting, and determining a design limit for the low-ductility material responsive to the impact-effect threshold value. One result of the using the present approach is to reduce the structural weight by reducing the barely visible impact damage design factor.

The invention discloses a high-contrast liquid crystal electronic paper displayer and a manufacturing method thereof. The cholesteric liquid crystal layer of the liquid crystal electronic paper displayer comprises a viscous spacing material and a nonviscous spacing material, wherein the main ingredient of the viscous spacing material is the mixture of epoxy resin glue or UV-cured UV adhesive and a spacing material. In the manufacturing method of the liquid crystal electronic paper displayer, the liquid crystal molecules are arranged in a focal conic state in a liquid crystal cell through the treatment at a high temperature which is about 10 DEG C higher than the clearing point of the liquid crystal. In the non-display part, the focal conic state forms a display background, so the high contract of the display part is realized. The liquid crystal box with the structure can realize the mechanical impact resistant liquid crystal electronic paper displayer by adopting either a hard glass substrate or a flexible plastic substrate. In the invention, the high-contract liquid crystal electronic paper displayer is manufactured by adding the viscous spacing material and adopting high-temperature treatment, and the contrast of the liquid crystal electronic paper displayer is improved to 1.2 to 1.3 times that of the conventional liquid crystal electronic paper displayer made of the same liquid crystal material.

Systems and methodologies are disclosed for isolating a portable hand held electronic unit from external mechanical shocks and/or vibrations by dampening them at several levels. The system can absorb an external mechanical shock at three different levels by employing an external bumper system, elastic housing design features, and an internal frame isolation. Moreover, such isolation assembly simplifies production of the portable electronic unit by enabling a “build to order process” according to a customer's specification.