794results about How to "Stop the leak" patented technology

A split nut has two halves securely fastened to one another by magnets. The magnets may be attached to the nut or the nut itself can be magnetized. The magnets secure the two halves together so that the threads of each half are in alignment and the nut may be moved along a threaded shaft. The nut may be attached to a threaded shaft anywhere along the length of the shaft. The nut has the ability to realign or reform a damaged portion of the threaded shaft. The nut can also be used for tightening, in the manner of a conventional nut. Moreover, the nut can be used for extracting by pushing, as for example in removing steering wheels for a steering column. Also, if provided with a gasket, the nut can stop leaks.

The present invention provides a data processing apparatus and method for managing access to a memory within the data processing apparatus. The data processing apparatus comprises a processor operable in a plurality of modes and a plurality of domains, said plurality of domains comprising a secure domain and a non-secure domain, said plurality of modes including at least one non-secure mode being a mode in the non-secure domain and at least one secure mode being a mode in the secure domain, said processor being operable such that when executing a program in a secure mode said program has access to secure data which is not accessible when said processor is operating in a non-secure mode. Further, a memory is provided for storing data required by the processor, and consists of secure memory for storing secure data and non-secure memory for storing non-secure data. The memory further contains a non-secure table and a secure table, the non-secure table being within the non-secure memory and arranged to contain for each of a number of first memory regions an associated descriptor, and the secure table being within the secure memory and arranged to contain for each of a number of second memory regions an associated descriptor. When access to an item of data in the memory is required by the processor, the processor issues a memory access request, and a memory management unit is provided to perform one or more predetermined access control functions to control issuance of the memory access request to the memory. The memory management unit comprises an internal storage unit operable to store descriptors retrieved by the memory management unit from either the non-secure table or the secure table, and in accordance with the present invention the internal storage unit comprises a flag associated with each descriptor stored within the internal storage unit to identify whether that descriptor is from the non-secure table or the secure table. By this approach, when the processor is operating in a non-secure mode, the memory management unit is operable to perform the predetermined access control functions for the memory access request with reference to access control information derived from the descriptors in the internal storage unit retrieved from the non-secure table. In contrast, when the processor is operating in a secure mode, the memory management unit is operable to perform the predetermined access control functions for the memory access request with reference to access control information derived from the descriptors in the internal storage unit retrieved from the secure table. This approach enables different descriptors to be used for the control of accesses to memory in either the secure domain or the non-secure domain, whilst enabling such different descriptors to co-exist within the memory management unit's internal storage unit, thereby avoiding the requirement to flush the contents of such an internal storage unit when the operation of the processor changes from the secure domain to the non-secure domain, or vice versa.

A plasma confinement device used to plasma treatment device is arranged between the treatment zone and the exhaust zone thereof. The plasma confinement device includes an electric element, the electric element is provided with a plurality of channels which are used for controlling the output of used reaction gas and byproduct gas, and electric counteracting electrification particles which pass through the channels, the plasma discharge is basically confined in the treatment zone. The treatment device also includes electric earthing elements are arranged under the electric elements and are insulated from the electric elements. The plasma confinement device of the invention reduces the unhoped plasma which is formed out of the plasma treatment zone thereof, the pollution of the plasma treatment device cavity is solved.

The invention belongs to the technical field of agricultural cultivation and discloses a full-seedling and strong-plant cultivation method for corn. The cultivation method comprises steps as follows: seed selection and coating, furrowing and bedding, returning of straw to field, layered fertilization, precision sowing, chemical weeding and film mulching, final singling at suitable time and field management. According to the method, furrows are dug between corn sowing rows in a un-fallowing and no-tillage ridged field, bottom layers of dressing furrows are covered with chopped straw, the straw can prevent upper-layer fertilizer from leaking down, the decomposed straw becomes fertilizer and can be absorbed and used by corn roots, isolation is performed with loam for layered fertilization, and one-time fertilization can be used by the corn in the whole growth period; holes are dug in rows in a sowing region, two healthy, full and vigorous corn seeds are sown in each hole for final singling at suitable time; the fertilization region is covered with a mulch after chemical weeding, and the temperature under the mulch is higher than the subsurface temperature of the corn sowing region, so that fertilizer and water under the mulch slowly permeate soil in the corn sowing region, full-seedling, strong-seedling and strong-strain of the corn are realized, and the basis for increasing the corn yield is consolidated.

The intelligent gas spring includes a casing, an inner cylinder with cylinder cap and piston to separate the space inside the casing into main gas chamber and subsidiary gas chamber communicated through an on-off gas channel, and a stroke valve installed on the inner cylinder cap to suit with the damping cylinder on the piston. The gas channel may be opened or closed accurately and timely based on the varying road condition so as to regulate the rigidity of the gas spring intelligently to suit for different road condition. The present invention has excellent shock absorbing performance to make the automobile possess high riding comfort and excellent operation stability, and may be installed widely in various kinds of automobile.

The invention discloses an immersion control device used for a photoetching machine; a circular flow field cushion chamber, a sealing structure and a drying cavity are arranged from an injection cavity and a recovery cavity outwards in sequence; the flow field cushion chamber can carry out compensation to an exposure flow field in real time so as to reduce the occurrence probability and intensity of liquid backflow; the sealing structure adopts a combination mode of surface characteristic processing of hydrophilic and hydrophobic and the structure design of a tension groove; the section of the tension groove is a triangle inclined outwards in the direction vertical to a substrate; liquid which is drawn to move by the substrate forms backflow so as to restrain the liquid leakage; the drying cavity is filled with matters with super absorbent and communicated with negative pressure, and discharges possible residue of droplets in real time; simultaneously, the mode of conveying the liquid adopts positive pressure to feed the liquid and free flowing of recovery side, thus avoiding fluctuation of flow field caused by the incoordination of liquid injection and recovery pressure.