56results about How to "Limited size" patented technology

A proportional valve is disclosed for controlling the outlet pressure of a fluid flowing therethrough. The valve comprises a valve body having an inlet port and an outlet port for the fluid. The valve also has an inner chamber, within which there is formed a valve seat that may be opened and closed variably by a shutter axially movable from and towards the valve seat. Movement of the shutter is controlled by a shape memory alloy (SMA) actuating member operating antagonistically to an elastic member, the temperature of the fluid being lower than the transition temperature of the shape memory alloy. The actuating member and the elastic member are connected to the body valve at opposite sides relative to the valve seat. A power control circuit is also provided for circulating an electric current through the actuating member so as to heat the same by Joule effect from a temperature lower than the transition temperature to one that is higher. At least one vent hole is formed in the valve body for putting a portion of the chamber upstream of the valve seat into fluid communication with the outside or a collection network. The actuating member is housed in that portion of chamber corresponding to the inlet port of the fluid, whereby a continuous flow of fluid around the actuating member is ensured for accelerating the cooling process. A closed-loop control circuit for the power control circuit controls the circulating current as a function of a pressure signal generated by fluid pressure sensing means and in such a way as to offset the retarding effect produced by the fluid during heating of the actuating member.

The invention belongs to the technical field of computer database management, and particularly relates to a flexible transaction management method in key-value store data storage, which includes the following steps: when data is written, a coordinative module packages a request into a log and obtains the existing log position, the Parkes algorithm is used to write the log into the new log position, the position is recorded, the successful operation information is returned, and the data and the log position are written into the data storage; when the data is read, the coordinative module obtains the newest log position and checks whether the data is updated, if the data is updated, the data is read and returned to the user, and if the data is not updated, the log is read, and the data is then corrected and read and returned to the user. The flexible transaction management method improves the concurrency, the fault tolerance and the expansibility of the key-value store data storage, can narrow the limitation range of the transaction as much as possible under the circumstance that the system consistency is ensured, and improves the concurrency of the system; and the design of the flexible transaction has high positive function in improving the flexibility and the adaptability of the database transaction.

A semiconductor device eg. a MOSFET (1) comprising a substrate (40) including a first region (18) and a second region (16) of a first conductivity type and a third region (42) between the first and second regions of a type opposite to the first conductivity type, and being covered by a dielectric layer (20), a plurality of trenches (12) laterally extending between the third and second region, said trenches being filled with an insulating material, and being separated by active stripes (14) comprising a doping profile having a depth not exceeding the depth of the trenches wherein each trench terminates before reaching the dielectric layer (20),namely is separated from the third region by a substrate portion (26) such that the respective boundaries between the substrate portions and the trenches are not covered by the dielectric layer. A method for manufacturing such a semiconductor device is also disclosed.

The invention discloses a machining method for comprehensive utilization of waste rock of the Hainan Shilu iron mine. According to the machining method, the waste rock is evenly fed into a first screening machine through a feeding machine, and the first screening machine screens the waste rock into three types including large rock, medium-sized rock and small rock; minerals and large stone are sorted out from the large rock through a mineral sorting machine; minerals and medium-sized stone are sorted out from the medium-sized rock through a mineral sorting machine; the small rock is broken through a breaker and then conveyed into a mineral sorting machine, and minerals and small stone are sorted out; and the small stone and powder are fed into a ball mill to be ground, the ground small stone and the ground powder are then conveyed into a second screening machine, and then gravel and building sand of three specifications including the large size, the medium size and the small size are screened out. By the adoption of the machining method for comprehensive utilization of the waste rock of the Hainan Shilu iron mine, the waste rock is recycled to be manufactured into products having the economic value, so that the economic benefit is improved, and the environment is protected.

Compact machine for making cheese, other milk-derivatives and tofu comprising a shell (1) in which an impermeable basin (3) is inserted, a collecting container (2) in which a permeable basket (6) is inserted for collecting the product and a support structure comprising a lower base member (10) having two side arms (8). The machine comprises, furthermore, a motor (7) integral to the shell (1) for operating a stirring member (5), and heating means (4) adapted to heat to various temperature the content of the basin (3). The basin (3) and the permeable basket (6) are open and coupled with respect to each other, in a releasable way, one against the another. The coupled basin (3) and the permeable basket (6) are adapted to be integrally rotated, in order to be moved alternatively between a first position (A), where the basin (3) is down and the basket (6) is up, and a second position, where the basket (6) is down and the basin (3) is up. The cheese can be extracted from the basket (6) after a plurality of preparation steps.

A semiconductor device comprises a substrate including a first region and a second region of a first conductivity type and a third region between the first and second regions of a second conductivity type opposite to the first conductivity type, and being covered by a dielectric layer. A plurality of trenches laterally extend between the third and second region, are filled with an insulating material, and are separated by active stripes with a doping profile having a depth not exceeding the depth of the trenches wherein each trench terminates before reaching the dielectric layer and is separated from the third region by a substrate portion such that the respective boundaries between the substrate portions and the trenches are not covered by the dielectric layer. A method for manufacturing such a semiconductor device is also disclosed.

The invention relates to an ironing board, comprising a plate (2) which may be driven in rotation about an axis. According to the invention, said plate (2), mounted on a fixed base housed directly below said plate (2) has an essentially circular form with at least one part essentially angular in form (3). The above is of application to ironing boards.

The invention concerns to a display device comprising a flat screen, a cabinet and at least one mobile arm capable of taking up first and second positions:in the first position, one end of the mobile arm or mobile arms is space apart from a plane corresponding to the front surface of the screen along a horizontal direction, one part at least of the arm or arms being adapted to maintain the screen in a noticeably vertical position when the device is resting on a horizontal plane, andin the second position, the arm(s) are in the space between the planes parallel to the screen and tangent respectively to the front and to the rear of the cabinet.

The shot-blasting machine for surface treatment of products comprises a base frame, a containing chamber for containing at least a product to be treated associated to the base frame and provided with at least an access opening, one or more projecting organs associated internally of the chamber for projecting a flow of shot-blasting particles onto the product, and automated unloading means associated to the base frame which cause the product to exit from the chamber through the access opening.

The invention discloses a device for avoiding glue leakage of the reinforcement glue, which includes pre-installed steel bars, holes for installing the reinforcement and glue glue, and also includes a leak-proof mechanism for preventing the glue glue from leaking, and the leak-proof mechanism includes a mounting frame and a sealing body, the mounting frame is fixedly installed on the wall outside the hole, the sealing body is installed on the mounting frame, and the sealing body is used to block the hole; the present invention basically solves the problem of planting bars generated when installing steel bars The problem of glue leakage ensures the drawing strength of the planting bars, and there is no need to clean up the leaked glue and incur costs.