32results about How to "Small height change" patented technology

A coreless packaging substrate includes: a substrate body including an auxiliary dielectric layer having opposing first and second surfaces, an inner wiring formed on the second surface, and a built-up structure formed on both the second surface of the auxiliary dielectric layer and the inner wiring; and a plurality of conductive bumps including metal pillars having opposing first and second ends and a solder layer formed on the first end, wherein the second ends of the metal pillars are disposed in the auxiliary dielectric layer and electrically connecting with the inner wiring, and the first ends of the metal pillars with the solder layer protrude from the first surface of the auxiliary dielectric layer, thereby achieving ultra-fine pitch and even-height conductive bumps. A method for fabricating the coreless packaging substrate as described above is further provided.

The invention belongs to the technical field of synthetic aperture radar and particularly relates to a geosynchronous orbit circular track SAR imaging method using beam pointing control. By using such a method, a circular track geosynchronous satellite having a 8-shaped sub satellite point locus is taken as a radar platform, 12 hours corresponding to the half 8 shape where an object to be observed is arranged are regarded as an imaging period, the two-dimension antenna wave beam directional control is carried out in the imaging period by means of a stepping technique, so that the satellite can be in the corresponding movement process of the half 8-shaped sub satellite point locus, the antenna wave beam can always point to the imaged ground object to be observed, the 360-degree relative movement of radar relative to the object is formed, and the circular track SAR imaging based on the geosynchronous orbit satellite platform is realized.

This method of forming a carbonaceous material projection structure includes: the step of applying a resist 11 onto a diamond substrate 10; the step of forming holes 12 in the applied resist 11, the holes 12 being provided according to a predetermined arrangement, a wall 12b of each of the holes 12 being inversely tapered from an aperture 12a toward a bottom; the step of depositing a mask material through the aperture 12a to form a mask deposition 14 in each of the holes 12; the step of lifting off a mask material 13 deposited on the resist 11 together with the resist 11; and etching the diamond substrate 10 using the mask deposition 14 as a mask to form a carbonaceous material projection.

A method of manufacturing a lapping plate which has abrasive grains fixed in the plate and which is used for lapping of the air bearing surface of a magnetic head. Abrasive grains fixed in the lapping plate are subjected to an abrasive digging process to selectively lap the surface of the lapping plate in the vicinity of the abrasive grains, and the dug abrasive grains are subjected to an equalization process to make their abrasive grain heights equal.

The invention relates to an axis height adjustable gear box supporting structure which is characterized in that for a unit integrating a gear box and a multistage turbomachine, a position neighboring a split plane of the gear box is supported by a bracket; a sliding pin structure is arranged on the contact surface of the supported position; the bottom surface of a lower box body of the gear box is fit with a bottom plate of the bracket by a guide stand plate; and heat exchange pipelines and temperature sensors are arranged on the bracket. With the adoption of the axis height adjustable gear box supporting structure, the offset of the axis of each gear shaft in an operating process can be controlled conveniently; the heights of the axes are hardly changed with the change of the temperature of a box body; the influence of thermal expansion on the unit is reduced; the operating stability and energy conversion efficiency of the unit are improved; and the axis height adjustable gear box supporting structure is applicable to various gear box type turbomachine units.

The invention relates to the technical filed of ceramic machining, and discloses a vibrating device for forming of ceramic structural components. The vibrating device comprises a bottom plate; supporting columns are arranged on the left and right sides of the upper surface of the bottom plate; a mounting plate is arranged at the upper parts of the supporting columns; through holes are formed in the left and right sides of the mounting plate; guiding rods are connected in the middles of the through holes in a penetrating manner; a supporting plate is arranged at the upper ends of the guiding rods; a driving motor is arranged in the middle of the bottom plate; an output shaft of the driving motor is fixedly connected with a first belt pulley; the first belt pulley is connected with a secondbelt pulley through a first belt; the second belt pulley is fixedly connected in the middle of a spindle; third belt pulleys are arranged on the front and back sides of the spindle; the third belt pulleys are connected with fourth belt pulleys through second belts; the fourth belt pulleys are fixedly connected with the front and back ends of rotating shafts; and cams are arranged in the middles ofthe rotating shafts. The invention is applicable to the vibrating device for forming of the ceramic structural components. One driving motor is arranged to drive the three rotating shafts to rotate simultaneously, so that the three cams begins to rotate simultaneously, and the contact frequency between the cams and the supporting plate is increased.

The pallet 6 moving substantially horizontally to convey a passenger is composed of ordinary color pallets 6A and colored pallets 6B arranged at a predetermined interval. A height position of a substantially horizontal main moving road surface P of the pallet 6 is substantially the same as a height position of a top face of a getting-on-and-off floor 4 upper face or is slightly higher than the latter position. An inclined road surface Q on which a getting-on-and-off floor 4 side is lower than the main moving road surface P is provided in a part where the pallet 6 comes in and out of the getting-on-and-off floor 4. An inclined floor surface 4B which is continuous with the inclined road surface Q and on which an anti-pallet side becomes low is provided on the getting-on-and-off floor 4. To provide a moving sidewalk allowing a passenger, in particular, a wheelchair user to move smoothly between a pallet and a floor side and capable of easily determining operation of the pallet and reducing thickness of a device.

The invention relates to the technical field of traffic safety, and discloses a low-speed damping mechanism of a deceleration strip, the low-speed damping mechanism comprises a shell, the upper end of an inner cavity of the shell is movably sleeved with a movable block, the cross section of the movable block is T-shaped, and the lower end of the movable block is provided with a first movable cavity. By arranging the low-speed damping mechanism, when a vehicle passes through the deceleration strip at a low speed, after a tire is pressed on the upper surface of the movable block, air at the lower end of the movable block moves downwards into the air cavity through the vent hole when the movable block overcomes the elastic force of the first spring, so that the movable block moves downwards by a certain distance; therefore, the gradient of the deceleration strip on the road surface is reduced, the vibration amplitude is small when a vehicle with a low speed passes through the deceleration strip, and when the vehicle passes through the deceleration strip at a high speed, air at the lower end of the movable block cannot quickly move into the air cavity due to the small hole diameter of the vent hole, so that the height change amplitude of the movable block is small. Therefore, the effect of warning deceleration is achieved.

The invention discloses an adjustable safety seat which comprises a safety seat main body, a headrest and an adjustable backrest; the headrest is fixedly connected to the top of the safety seat main body; the adjustable backrest is fixedly connected to the bottom of the headrest; an adjusting rod is fixedly connected to one side of the interior of the adjustable backrest; fixing wheels are fixedlyconnected to the middle part of the adjusting rod; fixed teeth are fixedly connected to one side of the adjusting rod; connecting belts are movably connected to one side of the interior of the adjustable backrest; and a heating pipe is fixedly connected to the middle part of the interior of the adjustable backrest. The heating pipe can heat the seat for a user to improve the use feeling of the user in winter, an pneumatic pump can perform inflation and exhaust on an air bag to improve the safety of the seat, and the adjustable backrest enables the user to freely adjust a height and an angle of the seat to greatly satisfy the use feeling of the user, so that the adjustable safety seat is convenient to use, high in safety and suitable for the field of automobile accessories and has a wide development prospect in the future.

The invention provides an ankle pump movement tendon stretching plate which comprises a base, auxiliary supporting pieces are arranged on the two sides of the base, and an arc groove is formed in each auxiliary supporting piece; the arc surfaces of the cylindrical surface supporting pieces are in relative sliding connection with the arc grooves in the auxiliary supporting pieces; and the two pedals are fixedly connected with the two cylindrical surface supporting pieces correspondingly, and the rotation centers of the pedals are located in the middle positions of the pedals. According to the muscle and ligament state of a user, the muscle stretching angle can be automatically adjusted, the situation that the muscle stretching angle of the user is too large, and consequently the muscle is pulled is avoided, and the functions that the muscle stretching angle is controllable, muscle stretching is conducted on the two legs respectively, and ankle pump movement is conducted are achieved.