69results about How to "Reduce cavity volume" patented technology

Devices, methods for treatment of obesity, as well as instruments and tools used in placing, adjusting and maintaining devices for treatment of obesity. Various embodiments of devices that are implanted extra-gastrically are provided. Various embodiments of devices that are implanted intra-gastrically are provided. Methods include laparoscopic, percutaneous and/or trans-oral methods. Alternatively, devices describe can generally also be implanted by open surgical procedures.

Active noise reduction headphones for audiometry where the earphone portion of said headphones has a cavity volume greater than 6 cc and including an acoustic-electric sensing means and an electro-acoustic transducing means which are used cooperatively and which has additional passive noise control means in the form of a circumaural seal around the ear for improving high frequency noise control performance, the headphone having a summing junction for combining the active noise reduction signal and an audiometry test signal.

An apparatus for filling a sample volume defining device for separating at least one small defined volume of a liquid sample from a relatively larger undefined volume of said sample, said device including a first body and a second body movable relative to each other, whereby said first body has at least one cavity in a surface thereof, said at least one cavity having said defined volume. One of said first or said second body has at least one inlet opening adapted to be placed in a drop of the liquid sample. A defined channel is provided between said first and second body, which channel has fluid connection with said at least one opening and at least beyond said at least one cavity whereby the dimensions of said channel being such that said channel and said at least one cavity is filled with said liquid sample.

A packaged micromechanical device (100) having a blocking material (116) encapsulating debris-generating regions thereof. The blocking material (116) prevents the generation of debris that could interfere with the operation of the micromechanical device (100). Debris-generating regions of the device (100), including debris-creating sidewalls and any debris-harboring cavities, as well as electrical connections (108) linking the device (100) to the package substrate (102) are encapsulated by the blocking material (116). The blocking material (116) avoids contact with any debris-intolerant regions (118) of the device (100). A package lid (122), which is glass in the case of many DMD packages, seals the device (100) in a package cavity (120).

A power amplifier module (IC module) of stacked layer structure is miniaturized while dissipating heat from a power amplifier chip. The module includes a first LTCC wiring board having a cavity in which a power amplifier chip is embedded, and a plurality of vias, which are electrically connected to ground, immediately underlying the power amplifier chip; and a second LTCC wiring board joined to the first LTCC wiring board and incorporating a matching circuit and a bias circuit electrically connected to the power amplifier chip. Ground pads of the matching circuit and bias circuit are all grounded by separating wiring or vias in the first LTCC wiring board and second LTCC wiring board.

A printing form for transferring free-flowing printing ink to a printing material to be printed includes a body having a surface formed with a multiplicity of openings coverable by printing ink; a multiplicity of gas-containing cavities formed in the body, the cavities, respectively, terminating in the openings, respectively, at the surface of the body; and devices assigned to the cavities, respectively, for producing a vacuum therein for sucking printing ink covering the openings of the cavities into a region adjacent to the openings of the cavities, respectively, when a vacuum is produced by devices in the cavities, respectively; an ink transferring device including the printing form; and a method of producing the printing form.

A system and method for managing gas bubbles in a liquid flow system are described. In particular, according to the system and method, novel techniques reduce a volume of cavities in the liquid flow system and limit a cross-sectional area of the liquid flow system to a maximum cross-sectional area of tolerably sized bubbles. In this manner, by reducing the cavity volumes and limiting cross-sectional areas, the formation of intolerably sized bubbles and the aggregation of tolerably sized bubbles into intolerably sized bubbles are each substantially prevented. Also, bubbles may be removed from the system to reduce the quantity of bubbles that are to be managed.

The invention relates to an electronically-controlled common rail heavy oil injector which comprises an injector body, an electro-hydraulic control member and a nozzle member. In the electro-hydrauliccontrol member, a ring groove is formed in the middle of the outer side of a guide sleeve, a transverse through hole is formed in the middle of the groove to directly communicate with a middle hole of the guide sleeve, the two sides of the ring groove are provided with seal rings, and the interior of the oil injector is divided into three chambers. A control valve core guide section is provided with three ring grooves, and the second ring groove is in communication with the transverse through hole in the middle of the guide sleeve. An electromagnetic component is in contact with cooling oil,a cooling oil circuit is isolated from a fuel oil circuit by means of dynamic sealing, static sealing and drainage manners, and corroding and thermal damage of heavy oil to electronic components can be effectively prevented; and a sinking groove is formed in the middle of the top end of an orifice plate, a ball valve seat guide sleeve can be sleeved with the sinking groove of the orifice plate tobe in clearance fit with a ball valve seat, and a certain guiding ability for axial movement of the ball valve seat is achieved.

[Problem] To provide a method of molding a composite molded article enabling compression molding without requiring a large sized injection molding machine and a mold system used for that.

[Means for Solution] A method of molding a composite molded article using a first mold member 13 to mold a primary molded article 29 by primary molding, switching a movable mold member holding the primary molded article 29 with a movable mold member 14 positioned with a second mold member 15, then using a second mold member 15 in which the primary molded article 29 is inserted to mold a secondary molded article 30 by secondary molding, wherein the primary molding and the secondary molding are executed by non-continuous different steps at points of time different from each other.

A process of injection molding a foamable plastic composition which comprises filling completely a molten foamable plastic composition into a cavity, while reducing a volume of the cavity in the middle of injection or immediately after injection; cooling the composition to the state wherein a solidified layer in contact with a mold surface mingles with a molten inside layer; enlarging the volume of the cavity to that of the desired molded article; and after further cooling, removing the molded plastic foam article. This molded article comprises a layer having a non- or low-foamed, dense structure on the surface and a high-foamed layer at the inside, and has a light weight, good appearance and stiffness.

The invention relates to an image-recording device (10), comprising a scanning-head guide (18) for moving the scanning head (20) across a scanning region (42) of a cavity, which scanning region (42) extends around the scanning head (20). A planar or film-like, elastically extensible material extends between the scanning head (20) and the scanning region (42), which material can be pressed againstthe scanning region (42) by the application of overpressure in the manner of a balloon (12). The scanning-head guide (18) extends through the balloon connection (16) of the balloon (12) to the scanning head (20). In particular, a control device (32) determines the shape of the cavity (40) against which the material rests from the deformation of the material while the overpressure is present.

The invention provides an SOI device capable of improving a self-heating effect and a preparation method thereof. The preparation comprises the steps: providing a semiconductor substrate with a cavitystructure, enabling the cavity structure to be located in a top semiconductor layer and exposing an insulating layer, preparing an active region coating the cavity structure, and preparing a gate electrode structure, a source-drain region and a source-drain electrode. The SOI substrate with the nanoscale cavity is adopted, the cavity structure is located in the top semiconductor layer, the size of the cavity is effectively reduced, the cavity is in the nanoscale size in the channel length direction, the heat dissipation path of the device cannot be obviously blocked, and compared with a device with a large-size cavity, the self-heating effect is relieved. Theoretically, the thickness of the top semiconductor layer above the cavity can reach 2 nm, it is guaranteed that top silicon is not damaged, a channel can be completely exhausted by a gate electrode, and the floating body effect is effectively restrained. The cavity is located in the top semiconductor layer and makes contact with the insulating layer, parasitic charges in the insulating layer cannot be introduced into a parasitic channel at the bottom of the top semiconductor layer, and the total dose radiation effect is effectively restrained.

The invention relates to a machine tool main shaft speed changing box which comprises a box body, an input shaft and an output shaft. The input shaft is fixedly connected with a main input gear. The output shaft is fixedly connected with a main output gear. A speed changing group comprises a clutch, a hollow shaft and a solid shaft. The upper portion of the hollow shaft and the lower half side of the clutch are fixed. The lower portion of the hollow shaft is fixedly provided with a hollow shaft gear meshed with the main input gear. The upper portion of the solid shaft is fixedly connected with the upper half side of the clutch. The lower portion of the solid shaft is provided with a solid shaft gear meshed with the main input gear. The solid shaft is connected into the hollow shaft in a sleeved mode through a bearing, and the solid shaft and the hollow shaft are coaxial. Transmission chain rigidity is improved, the service life of the gears and a supporting bearing on a shaft is prolonged, the cavity size in the speed changing box is reduced, so that a gear box is stable, the design of an inner-outer sliding spline in the transmission main shaft speed changing box is avoided, the machining difficulty of the shaft gears is lowered, and reliability is improved.

A heating body for an instant electric kettle that uses a stainless steel substrate electric heating film to generate heat, comprising a heating plate (1), an electric heating film (7), a thermistor (8), a connector (9), and a rear plate of the heating body (2), sealing ring (3), water inlet joint (4) and water outlet joint (5), the assembly structure is shown in the figure. The electrothermal film (7) is processed on the outer surface of the heating plate (1), the water inlet joint (4) and the water outlet joint (5) are installed on the heating body rear plate (2), and the groove (6) of the heating plate (1) ) position and place the sealing ring (3), then cover the heating body rear plate (2) on the heating plate (1), bend and press the tooth-shaped mounting buckle (11) so that the heating plate (1) and the heating body The rear plate (2) is tightly assembled, and the thickness of the inner cavity of the heating body is 3-8mm after assembly. The heating body also has the characteristics of small cavity volume, small heat capacity, fast heating and small heat transfer resistance. It can provide hot water above 85°C in 3-5 seconds after being energized and heated from the cold water state.