39results about How to "Small hole" patented technology

Manufacturing a semiconductor device involves forming (200) a sacrificial layer where a micro cavity is to be located, forming (210) a metal layer of thickness greater than 1 micron over the sacrificial layer, forming (220) a porous layer from the metal layer, the porous layer having pores of length greater than ten times their breadth, and having a breadth in the range 10 nm-500 nanometers. The pores can be created by anodising, electrodeposition or dealloying. Then the sacrificial layer can be removed (230) through the porous layer, to form the micro cavity, and pores can be sealed (240). Encapsulating MEMS devices with a porous layer can reduce costs by avoiding using photolithography for shaping the access holes since the sacrificial layer is removed through the porous membrane.

A ceiling-mounted loudspeaker includes a horn-shaped enclosure, an acoustic driver, and a front module. The tubular or horn-shaped enclosure carries a slanted woofer or loudspeaker driver which radiates into an angled or slanted first opening. The tubular enclosure terminates at bottom in a second, circular opening substantially parallel to a second plane, wherein the woofer's slanted plane is inclined with respect to the second plane. The slanted woofer can be oval and radiates sound through the enclosure's interior lumen and outwardly through ports defined in a substantially circular baffle carrying the front module and connected to the second opening. The baffle carries a midrange and tweeter near the ceiling where they can provide enhanced sound dispersion.

A filter device for filtering automobile exhaust gas includes a case, front and rear support flanges mounted inside the case, and the filter member mounted between the front and rear support flanges. The front and rear support flanges are fixed vertically to the front and rear end portions of the filter member, respectively. The filter member includes a laminated or rolled-up metallic foam filter and a metallic mat or a jacket wrapping around the metallic foam filter. The porous pipe mounted inside the filter member is formed with a plurality of holes. The porous pipe is structured such that the width thereof decreases gradually towards the rear end portion or increase gradually towards the rear end portion, or the holes in the rear end portion are smaller, or a conical member is inserted in the inside space, or a pyramidal member is inserted in the inside space.

A probe card includes a probe seat having upper and lower dies and a probe accommodating hole, a spring probe inserted through the probe accommodating hole and including a spring sleeve having upper and lower non-spring sections, and a circuit board disposed on the upper die and having a contact pad against which the spring probe is abutted. At least one of the upper and lower dies has a stopping surface partially facing the probe accommodating hole and an extended portion inserting hole in alignment with the probe accommodating hole. At least one of the upper and lower non-spring sections has a cylinder portion abutted on the stopping surface and an extended portion inserted through the extended portion inserting hole.

A vehicle wheel, comprising: a rim; a hub; a plurality of spokes; a bracing element including a hole, a hole sidewall, and an engagement surface outward of the hole; and a connecting element with a spoke opening and an overhang surface. The spoke is connected to the connecting element and the connecting element is connected to the bracing element at the hole, with the bracing element comprising one of the rim and hub. With the spoke maintaining alignment with the connector, the connecting element may be transitioned between an insertion orientation where the connecting element may be inserted in the hole and an engagement orientation where the connecting element is engaged to the bracing element, with a toggle angle between the insertion and engagement orientations. The hole is preferably a circular hole. The spoke opening preferably includes internal threads to mate with external threads of the spoke.

There is provided apparatus for propagation of a wireless signal through a barrier comprising a first antenna for location on a first side of the barrier, a second antenna for location on a second side of the barrier and a waveguide. The waveguide comprises a conducting member passing through the barrier between the first and second sides. The conducting member is held within an insulator sleeve such that it is spaced from a surrounding metal wall of the waveguide. A wireless signal received by the waveguide on the first side of the barrier is transmitted through the barrier by Transverse Electro-Magnetic (TEM) mode propagation along the waveguide is re-radiated on the second side.

A method and an apparatus are provided for preventing formation of dew and / or ice on an optical glass window, with which formation of dew and / or ice is easily and simply prevented while an air turbulent disturbance is minimized and a deformation is inhibited as little as possible. A protective tube (6) covering an external atmosphere of a cooled optical glass window (2) and thermally insulated from the optical glass window (2) is provided so as to prevent the external atmosphere from being cooled in order to prevent the optical glass window (2) from having dew and / or ice formed thereon.

The invention discloses a spunlaced nonwoven filter material and a weaving process thereof. The spunlaced nonwoven filter material is formed by weaving bamboo charcoal fibers, linen fibers, viscose, polyester fibers and hot-melt fibers, wherein the mass of the bamboo charcoal fibers is 25%-35%of the total mass of the spunlaced nonwoven filter material, the mass of the linen fibers is 15%-25% of the total mass of the spunlaced nonwoven filter material, the mass of the viscose is 5%-10% of the total mass of the spunlaced nonwoven filter material, the mass of the polyester fibers is 10%-30% of the total mass of the spunlaced nonwoven filter material, and the mass of the hot-melt fibers 5%-10% of the total mass of the spunlaced nonwoven filter material. The filter material is prepared from the hot-melt fibers, thereby having the higher stiffness and the better effect; meanwhile, the filter efficiency of the filter material is quite high, and the spunlaced nonwoven filter efficiency is improved to 99.995% from the original 20%-40%.

The present invention relates to a process for the manufacture of infusion packets, the process comprising: • (a) providing a first sheet of thermoplastic material (2) which is porous or non- porous; • (b) thermoforming portions of the first sheet into a three-dimensional shape; • (c) providing a second sheet of material; • (d) dosing an infusible substance into the thermoformed portions of the first sheet or onto the second sheet; • (e) sealing the first and second sheets together to form pockets containing the infusible substance such that each pocket includes at least one thermoformed portion of the first sheet; • (f) severing the pockets at the seals to form infusion packets each having a chamber containing the infusible substance,

The invention relates to a portable rechargeable multifunctional skull drill and application thereof. The skull drill is a novel multifunctional neurosurgical electric tool, can be used for checking, diagnosing, preventing, treating and researching severe closed craniocerebral injury patients, particularly extremely severe craniocerebral injury patients, has simple structure, easy operation, low use cost, small volume, symmetrical force application, stable drilling, and improved utilization safety, and is more suitable for emergent treatment of pre hospitals, 120 ambulances, low level hospitals and emergency rooms in large size hospitals to provide possibility of early and super-early neurosurgical operation interference so as to greatly facilitate protraction of emergency medical treatment, achieve the aim of reducing the pre-hospital death rate of battling craniocerebral injury, and improve the effects and quality of the emergent medical treatment. The portable rechargeable multifunctional skull drill can be effectively combined into a complete set as a portable craniocerebral injury first-aid equipment kit which can be applied to field fight first aid for various battling craniocerebral injuries.

The invention, relating to the field of glass carbon material, particularly discloses a boron-doped glass carbon material and a method for preparing the material by chemical vapor deposition. The method is characterized by using chemical vapor codeposition process, using graphite as a deposition substrate, letting the deposition pressure be a normal pressure or a little more than 1 atm and the deposition temperature be 1100-1400 DEG C, after reaching the set deposition temperature, simultaneously letting in carbon source and boron source gases to realize boron-carbon codeposition in a high temperature chemical vapor furnace, wherein the content of the doped boron in the prepared boron-doped glass carbon material is 2-15 at.%. The method can prepare the boron-doped glass carbon material with uniform and compact structure, good oxidation resistance, smooth surface with vitreous luster, small porosity, special glassy fracture, and no growth characteristics, and the prepared material is an isotropic material. Because the method utilizes the conventional chemical vapor deposition device to prepare, the steps of forming, solidifying, carbonizing, graphitizing and other complicated steps of traditional glass carbon are omitted, thus the production cycle of glass carbon is greatly shortened, and the production cost is reduced.

The invention provides a device for precision positioning of a pedal steel chisel pore-forming pile point, a manufacturing method and a using method. The device comprises a steel chisel, an ash filling barrel and a hopper, the steel chisel comprises a chisel body, a chisel head, a pedal and a level gauge, the chisel head is located at the lower end of the chisel body and in a cone shape, the pedal is located below the chisel body, and the level gauge is located at the top of the chisel body; the ash filling barrel comprises a hollow barrel body and an ash filling barrel handle located on the upper part of the barrel body, the barrel body sleeves the chisel body, the inner wall of the barrel body is attached to the outer wall of the chisel body, and the length of the barrel body is smaller than the distance from the chisel head to the pedal; the outer diameter of the lower end of the hopper is smaller than the inner diameter of the barrel body, lime can be grouted into soil in 20 cm-50 cm, instead of only scattering on the surface of the soil, when operation is conducted around and the positioning point close to a mark is covered, the covering soil can be wiped out, the marking point position can be exposed by wiping a little more soil, the hole is small, ash filling is less, positioning is accurate, deviation is not prone to occurring, the original positioning point is easy to find, time and labor are saved, and convenience and fastness are achieved.

The present disclosure relates to the field of endovascular treatment. More particularly, the present invention uses a modified hydrogel intrasaccular occlusion device designed to implement an endovascular treatment to ameliorating or eliminating aneurysm recurrence, which hydrogel may optionally be impregnated with pharmaceutical compounds. The present invention also teaches the use of thin hydrogel coatings to ameliorate endovascular treatment related difficulties.

The invention relates to fixed facility of a substation, in particular to a rainwater head cover plate of a substation, which comprises a cover plate base body, wherein the cover plate base body is provided with a grating groove running through up and down; edges of two sides of the back of the cover plate base board are provided with two insertion strips with L-shaped sections, vertical edges of the insertion strips are embedded into the cover plate base board, and horizontal edges of the insertion strips are positioned below the bottom face of the cover plate base body to enable gaps among the horizontal edge of the insertion strips and the bottom plane of the cover plate base body to form a pair of slots positioned at two sides; and a filter screen layer is horizontally inserted into the slots in a plug way, and can be freely inserted or drawn out of the slots. The invention has the advantages that: 1, the filter screen can prevent impurities with larger volume from entering a rainwater head so as to avoid the blockage of the rainwater head; 2, the drawable filter screen is convenient for cleaning the impurities and is more convenient; and 3, holes of the filter screen are smaller, which can prevent small animals from entering the rainwater head and a cable duct and ensures the safety operation of equipment.

The invention discloses a high-weather-resistance anti-skid rubber foaming shoe sole and a preparation method thereof. Anti-skid patterns are formed on the bottom surface of the foaming shoe sole; the foaming sole is prepared from the following raw materials: natural rubber, brominated butyl rubber, modified starch, polytetrafluoroethylene, clam meal, zinc oxide, zirconium oxide, vinyl glycol ether, a foaming agent, a vulcanizing agent, an accelerant and a stabilizer. Zinc oxide, zirconium oxide and clam meal are limited to be matched, so that the prepared rubber foaming shoe sole is not prone to yellowing in the vulcanization process, and the color of the prepared rubber foaming shoe sole is guaranteed.

A stylet, apparatus and method for inserting a catheter into the dura of a patient. A hole having a predetermined diameter is made in the dura of the patient. An extensible catheter having a predetermined diameter in a relaxed state is stretched. The predetermined diameter in the relaxed state being greater than or equal to the predetermined diameter of the hole. The catheter is stretched a predetermined distance to a stretched state such that the catheter has a diameter in the stretched state that is smaller than the predetermined diameter of the hole. The stretched catheter is secured in the stretched state. The stretched catheter is inserted through the hole into the dura of the patient. The catheter is returned to its relaxed state allowing the catheter to fill the hole.

The invention, relating to the field of glass carbon material, particularly discloses a boron-doped glass carbon material and a method for preparing the material by chemical vapor deposition. The method is characterized by using chemical vapor codeposition process, using graphite as a deposition substrate, letting the deposition pressure be a normal pressure or a little more than 1 atm and the deposition temperature be 1100-1400 DEG C, after reaching the set deposition temperature, simultaneously letting in carbon source and boron source gases to realize boron-carbon codeposition in a high temperature chemical vapor furnace, wherein the content of the doped boron in the prepared boron-doped glass carbon material is 2-15 at.%. The method can prepare the boron-doped glass carbon material with uniform and compact structure, good oxidation resistance, smooth surface with vitreous luster, small porosity, special glassy fracture, and no growth characteristics, and the prepared material is an isotropic material. Because the method utilizes the conventional chemical vapor deposition device to prepare, the steps of forming, solidifying, carbonizing, graphitizing and other complicated steps of traditional glass carbon are omitted, thus the production cycle of glass carbon is greatly shortened, and the production cost is reduced.

The invention relates to a sheet rolling puncher, mainly comprising a motor, a speed reducer, a lower shaft, a base, an upper shaft, a lead screw lifting mechanism, a cross beam and a fixing frame. The sheet rolling puncher is characterized in that a first gear is arranged on the lower shaft; a second gear is arranged on the upper shaft; the first gear is meshed with the second gear; an upper blade and a first shim are fixed on an upper fixed roll; a first cover plate is fixed on the upper fixed roll; a lower blade, a second cover plate and a roller are fixed on a lower fixed roll; a lower stripper plate is fixed on the cross beam of a frame; a lower stripper tablet is fixed on the lower stripper plate. The sheet rolling puncher has the advantage of simple, compact and reasonable structure; continuous punching aim can be achieved; the production time can be reduced, and the working efficiency can be improved; a stamping die is provided with no fixed cavity, and the roll pass is small;the precision of the hole distance is high, and the operation is simpler and more convenient.