133results about How to "Increased contact area" patented technology

The invention relates to a preparation method of a light-colored polyisocyanate curing agent. The preparation method comprises the following steps: (a) purifying a raw material-trimethylolpropane to obtain trimethylolpropane with the carbonyl compound content lower than 0.1wt%; (b) reacting trimethylolpropane with the carbonyl compound content lower than 0.1wt% or a mixture of trimethylolpropane with the carbonyl compound content lower than 0.1wt% and micromolecular dihydric alcohol with excess diisocyanate in a reactor with a conical liquid distribution plate to obtain a liquid-state prepolymer reaction solution containing excess diisocyanate; and (c) removing monomers from the prepolymer reaction solution obtained in the step (b) by adopting a two-stage film evaporator, and diluting by a solvent to obtain the curing agent with the diisocyanate monomer content lower than 0.5wt%. The color number of the diisocyanate curing agent prepared based on the method can be lower than 20Hazen.

Self-assembled polymer technology is used to form at least one ordered nanosized pattern within material that is present in a conductive contact region of a semiconductor structure. The material having the ordered, nanosized pattern is a conductive material of an interconnect structure or semiconductor source and drain diffusion regions of a field effect transistor. The presence of the ordered, nanosized pattern material within the contact region increases the overall area (i.e., interface area) for subsequent contact formation which, in turn, reduces the contact resistance of the structure. The reduction in contact resistance in turn improves the flow of current through the structure. In addition to the above, the inventive methods and structures do not affect the junction capacitance of the structure since the junction area remains unchanged.

The invention discloses a wheel type conveying line which comprises a rack. Multiple rows of eccentric rotating wheels are arranged on the rack in an equal height manner. The axes of all the eccentricrotating wheels are parallel to one another and are parallel to the horizontal plane. Each eccentric rotating wheel is arranged on an installing frame located on the rack in the manner of rotating around the axis of the eccentric rotating wheel. The eccentric rotating wheels on each row are attached to a driving roller, the driving roller makes contact with the lower semicircle of each eccentricrotating wheel, the driving roller is affected by upward elastic force, and thus the eccentric rotating wheels are attached to the driving roller in a self-adapting manner, or the driving roller makescontact with the upper semicircle of each eccentric rotating wheel, the eccentric rotating wheels are affected by the upward elastic force, and the eccentric rotating wheels are attached to the driving roller in a self-adapting manner. The driving roller rotates under the driving of a first power source, and the eccentric rotating wheels are driven to rotate through friction force. According to the wheel type conveying line, the design of the scheme is elaborate, the eccentric rotating wheels or the driving roller are affected by the upward elastic force, thus the eccentric rotating wheels always keep being attached to the driving roller, after abrasion is caused or when the installing position precision is poor, self-adaptive adjusting is achieved, rotating between the eccentric rotatingwheels and the driving roller is effectively ensured, and the conveying stability is improved.

The invention discloses a design method for a water lubricated rubber stern bearing. According to the method, axial hardness division is performed on a traditional slat-type water lubricated rubber stern bearing, a rubber bearing bush of the traditional slat-type water lubricated rubber stern bearing is divided into a plurality of regions from the stern end to the front end, the hardnesses of rubber from the stern end to the front end are sequentially increased, and the length of a region close to the front end is the longest, so as to enable the water lubricated rubber stern bearing to adapt to actual load and improve the contact pressure performance of the bearing. The invention further provides the water lubricated rubber stern bearing. According to the method, the whole long stern bearing is divided into the regions with different hardnesses based on a pressure distribution feature of the water lubricated rubber stern bearing, so that the pressure distribution of the water lubricated rubber stern bearing is remarkably improved, the contact regions are effectively extended in the circumferential direction, and the contact performance of the stern bearing is well improved as a whole.

A magazine strip (2) for fastening elements (14) includes a strip-shaped support strap (4), a plurality of uniformly spaced from each other, transporting recesses (8) for a stepwise displacement of the magazine strip (2) in a magazine receptacle and opening toward a first one (6) of opposite longitudinal edges of the strap, and a plurality of substantially cylindrical receptacles (12) for retaining fastening elements (14) and limited by a lower surface (21) and an upper surface (22) of the support strap (4) and opening toward a second one (10) of the opposite longitudinal edges of the support strap (4).

A SiC semiconductor device includes a reverse type MOSFET having: a substrate 1; a drift layer 2 and a base region 3 on the substrate; a base contact layer 5 and a source region 4 on the base region; multiple trenches 6 having a longitudinal direction in a first direction penetrating the source region and the base region; a gate electrode 9 in each trench via a gate insulation film 8; an interlayer insulation film 12 covering the gate electrode and having a contact hole 12a, through which the source region and the base contact layer are exposed; a source electrode 11 coupling with the source region and the base region through the contact hole 12a; a drain electrode 13 on the substrate. The source region and the base contact layer extend along with a second direction perpendicular to the first direction, and are alternately arranged along with the first direction. The contact hole has a longitudinal direction in the first direction.

The invention discloses an air conditioner system, and belongs to the field of air conditioners. The air conditioner system comprises a temperature sensor used for measuring the temperature of the indoor environment, a spray header for spraying water, a draught fan used for blowing out water sprayed by the spray header, and a controller used for opening the draught fan and the spray header and determining the angle of the spray header when the difference between the temperature of the indoor environment measured by the temperature sensor and the set temperature is smaller than the threshold. According to the technical scheme, the temperature sensor is used for measuring the temperature of the indoor environment; the spray header is used for spraying water; the draught fan is used for blowing out water sprayed by the spray header; and the controller is used for opening the draught fan and the spray header and determining the angle theta of the spray header when the difference between the temperature of the indoor environment measured by the temperature sensor and the set temperature is smaller than the threshold. The controller controls the angle of the spray header to change a spraying zone and achieve the purpose of spraying different zones. The contact area of air and water is increased, and the humidification amount is increased. The invention further provides an air conditioner control method.

The invention relates to a sandwich disk stator and an ultrasonic motor which uses the stator, which relate to the technical field of piezoelectric ultrasonic motors. The sandwich disk stator and the ultrasonic motor solve the problem in an existing ultrasonic motor that since a mode that a metallic elastomer is pasted with a piezoelectric ceramic slice is adopted to actuate, the mechanical output ability is restricted. Driving elements with even number in the sandwich disk stator are fixed on the upper end surface of a disk, two pairs of piezoelectric ceramic pieces are fixed between each pair of cantilever beams, and a plurality of comb-shaped driving gears are evenly distributed on the lower end surface of the disk. The ultrasonic motor which uses the stator comprises two stators, a rotor component is composed of a rotor and a wear resistance bush ring, wherein the end surface of the wear resistance bush ring is provided with same taper with the upper end surface of the driving gears, two stators are respectively installed on and under the rotor, the pre-tightening between the stator component and the rotor component can be realized through two stator flanges, and the rotor component is connected with bearing blocks of the two stators through output shafts and bearings on two ends of the rotor in a rotary mode. The sandwich disk stator and the ultrasonic motor have simple structure, can realize big force moment output, and have stable performance.

In a semiconductor device, a support wall is formed between storage nodes to more effectively prevent leaning of a capacitor, and the storage nodes are formed using a damascene process, which may increase a contact area between each storage node and a storage node contact.

The device (1) has a driving roller (4) for covering a peripheral part of a textile material (3), where the textile material (3) forms an inlet gusset (6) with the driving roller (4). A surface agent feeding device (7) feeds into the gusset (6), and a supporting roller (10) for supporting the textile material (3) is arranged in a region of the gusset (6) on a side of the driving roller (4), where the side faces away from the textile material.

The invention discloses a flexural vibration sandwiched energy converter-typed round disc stator and an ultrasonic motor to which the stator is applied, and relates to the ultrasonic motor field. The invention solves the problem in the existing ultrasonic motor, that mechanical output capacity is restrained due to the adoption of elastic metal body stuck on piezoelectric ceramic pieces for excitation. Even flexural vibration sandwiched energy converters of the stator are symmetrically arrayed and fixed between a round disc at the upper end and a round disc at the lower end; both the front end cover and the back end cover of the sandwiched energy converter are a quadrangular with a rectangle cross section narrowing down gradually, the small end faces of the front end cover and the back end cover are fixedly connected with the upper round disc and the lower round disc; two pairs of piezoelectric ceramic pieces are respectively and fixed between the front end cover, the back end cover and the flange. A rotor with a shaft and a rotor without a shaft in the ultrasonic motor both take the shape of a round disc and are embedded respectively from the top and the bottom of a stator cylinder, a wearable cushion is fixed at the end face, contacting the round disc, of the rotor and the stator is fixed to a base through the flange on the energy converter. The flexural vibration sandwiched energy converter-typed round disc stator and the ultrasonic motor of the invention are applicable to the manufacturing field of the ultrasonic motors.

The invention provides a method for forming a contact hole, comprising: forming a gate, a sidewall spacer, a sacrificial sidewall spacer, a source region and a drain region on a substrate, wherein the sidewall spacer is formed around the gate, the sacrificial sidewall spacer is formed over the sidewall spacer, and the source region and the drain region are formed within the substrate and on respective sides of the gate; forming an interlayer dielectric layer, with the gate, the sidewall spacer and the sacrificial sidewall spacer being exposed; removing the sacrificial sidewall spacer to form a contact space, a material that the sacrificial sidewall spacer is made of being different from any of materials that the gate, the sidewall spacer and the interlayer dielectric layer are made of; forming a conducting layer to fill the contact space; and cutting off the conducting layer, to form at least two conductors connected to the source region and the drain region respectively. The invention also provides a contact hole, the contact hole a gate and a sidewall spacer being formed on a substrate and within an interlayer dielectric layer, wherein the sides of the contact hole meet the sidewall spacer. The invention also provides a semiconductor device and a method for forming the same. With the technical solutions provided by the invention, the number of masks used can be reduced.

The invention relates to a tank container (1) including a cylindrical vessel (3), the ends of which are closed by domed bottoms (5), and provided with an inner lining (6), in particular lead lining, and being connected at the bottoms (5) in each case by way of an annular device (13) to an end frame device (9). The annular device (13) is provided in a rim region (15) of the bottom (5). Between the annular device (13) and the bottom, in the rim region (15), a frustoconical annular support element (17, 17′) extends concentrically to the annular device (13). It engages flush by way of a broad side (25) with the outside (27) of the rim region (15) and is fixed on its inner and outer edge (29, 31) by way of welding seams (33, 35) to the rim region (15), such that loads acting between the vessel (3) and the annular device (13) are transmitted by way of the broad side (25) between the vessel (3) and the annular support element (17, 17′).

The invention discloses a roller bearing for supporting a main shaft of a wind driven generator. The roller bearing for supporting a main shaft of a wind driven generator is prepared from a high-strength alloy steel material, has a single-row tapered roller bearing structure, and comprises an outer ring, an inner ring, a tapered roller, an upper groove which is used for receiving the tapered roller and is located at the outer ring, a lower groove which is used for receiving the tapered roller and is located at the inner ring, a keeper which is used for keeping the tapered roller, an upper lubricant groove which is located at the outer ring and provides lubricant to the tapered roller, and a lower lubricant groove which is located at the inner ring and provides lubricant to the tapered roller, wherein four corners of the tapered roller have arc shapes; the upper groove which is used for receiving the tapered roller and is located at the outer ring and the lower groove which is used for receiving the tapered roller and is located at the inner ring compose a tapered roller receiving groove; and four corners of the tapered roller receiving groove have arc shapes.

The invention relates to a keyboard module, which comprises a first key and a second key, wherein the first key comprises a first key cap and a first scissor connection element, wherein the first scissor connection element comprises a first outer frame and a first inner frame; the second key comprises a second key cap and a second scissor connection element; the second scissor connection element comprises a second outer frame and a second inner frame; the first outer frame, the first inner frame and the second inner frame all are of a symmetric structure; and the second outer frame is of an asymmetric structure.

The invention discloses a clutch. The clutch comprises an output gear, a rotating shaft and at least one clutch tooth arranged on the rotating shaft, wherein the output gear is provided with a containing groove; the inner side wall, positioned in the containing groove, of the output gear is provided with a plurality of inner tooth grooves matched with the clutch teeth; the ends, away from the rotating shaft, of the clutch teeth are provided with first contact arc faces; the inner tooth grooves are provided with second contact arc faces making contact with the first contact arc faces; the clutch teeth are provided with deformation holes; and the first contact arc faces are arranged at the positions where the clutch teeth make contact with the output gear, that is, the tops of the clutch teeth are of a cylindrical structure, compared with an involute type gear, the contact area of the clutch teeth is larger, and vibration in the transmission process can be effectively reduced. Meanwhile,the second contact arc faces are arranged in the inner tooth grooves of the output gear and make contact with the first contact arc faces of the clutch teeth, and therefore when clutch slipping happens, due to the fact that the first contact arc faces and the second contact arc faces are gentle, tooth jumping is easily achieved to achieve safe clutch.

The invention belongs to the technical field of machining, particularly discloses a bevel gear machining device for machining, and puts forward the following scheme now to solve the problems of poor deburring effect and low efficiency for inner walls of tooth grooves in bevel gears in the prior art. The device comprises a fixing frame; a horizontally-placed positioning piece is rotationally connected at the bottom of one end of the fixing frame; one end of the positioning piece is rotationally connected with a rotating motor; a horizontally-rotating transmission piece is arranged in the position, located above the positioning piece, of the fixing frame; and a driving motor is fixed to the middle of the top of the transmission piece. According to the device, a bevel gear and the transmission piece are rotated synchronously in a stepping manner, a striking piece extends into the corresponding tooth groove and vibrates and strikes the inner wall of the tooth groove along with a vibratingsheet, deburring operation is performed on the tooth groove of the inner wall of the bevel gear, after the transmission piece and the bevel gear are rotated by one circle, the transmission piece is paused, the bevel gear is rotated by the distance of one tooth groove gap, and deburring operation is performed on the tooth grooves in various positions of the bevel gear.

The invention relates to a staggered four-foot driving piezoelectric stepping linear motor. A first actuating rod and a second actuating rod are symmetrically distributed relative to a rotor, one end of the first actuating rod is connected with a left upper base through a left horizontal flexible hinge, and one end of the second actuating rod is connected with a right upper base through a right horizontal flexible hinge. The other end of the first actuating rod is connected with the first clamping mechanism in a matched mode, and the other end of the second actuating rod is connected with the second clamping mechanism in a matched mode. According to the staggered four-foot driving piezoelectric stepping linear motor, the telescopic effect of laminated piezoelectric ceramics is transmitted to a rotor through a swing rod and a displacement conversion mechanism, and the displacement output direction is parallel to the telescopic direction of the laminated piezoelectric ceramics; and when a piezoelectric control signal is input to the laminated piezoelectric ceramic, differential action can be realized, so that large stroke, large thrust and high precision are taken into consideration.