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556 results about "Local pressure" patented technology

Process for anchoring connecting elements in a material with pores or cavities and connecting elements therefor

A joining pin (3.2) with which two parts (1 and 2) made from a porous material, particularly wood or a wood-like material, are to be joined together, is anchored in the porous material at predetermined anchoring points (31, 33). For this purpose, a bore (4.2) with a closed inner end (41) is made in the parts (1 and 2). The shape of this bore (4.2) is so matched to the joining pin (3.2) that it can be introduced substantially without force expenditure into the bore and is positionable in a first position. At least one predetermined anchoring point (31, 33) between the joining pin (3.2) and the wall of the bore (4.2) is formed when pressure is built up by pressing the joining pin (3.2) with a pressing force (F) more deeply into the bore to a second position. Energy is supplied in a planned manner to the joining pin (3.2) so that at the predetermined anchoring points (31, 33) the thermoplastic material of the joining pin (3.2) is plasticized. The locally plasticized plastic material is pressed by the local pressure into the porous material of the parts and forms local, macroscopic anchors (10, 20). The joining pin (3.2) is, e.g., made entirely from a thermoplastic material and the energy for plasticizing is supplied thereto by ultrasonic vibration.
Owner:WOODWELDING

Storage Systems For Adsorbable Gaseous Fuel And Methods Of Producing The Same

A storage system for an absorbing gas including a plurality briquette units situated within the storage tank is disclosed. In some embodiments each briquette unit includes a liner or open vessel, and compressed gas-absorbing particulate matter associated with the liner for external support In some embodiments, the liner or vessel maintains the form of the briquette unit. The liner or vessel do not form a pressure tight vessel, and in some embodiments, the local pressure rating of the liner or vessel is less than the gas pressure within the storage tank. Exemplary gas-absorbing materials include but are not limited to methane and hydrogen adsorbing materials such as activated carbon, zeolite, and other appropriate hydrocarbon gas and/or hydrogen adsorbing materials. Optionally, each briquette unit includes a wrapper for preventing circulation of said particulate matter within the storage tank. Optionally, the storage system includes a mechanism for supplying or removing heat to at least one briquette unit. Furthermore, a method for manufacturing any of the aforementioned gas storage systems is disclosed. Some embodiments of the present invention provide methane-powered motor vehicles including but not limited to automobiles, buses, trucks and ships including a storage system with compressed methane-adsorbing particulate matter
Owner:ANGSTORE TECH

Abrasive flow micropore polishing device and polishing process thereof

The invention discloses an abrasive flow micropore polishing device, comprising a clamping tool, a base plate, a cavity, a separation device, a laser high-transparency protective lens, a laser, a focusing lens, a flow guiding passage and a one-way valve, wherein the clamping tool is used for clamping a workpiece and locating micropores of the workpiece; the base plate is arranged on the clamping tool; the cavity is arranged in the base plate and the clamping tool and correspondingly communicate with the micropores; the separation device is arranged in the cavity and divides the cavity into a cavitation cavity and a liquid storage cavity; the laser high-transparent protective lens covers the cavitation cavity; the laser can generate laser beams facing to the cavitation cavity; the focusing lens is arranged between the laser and the laser high-transparent protective lens and is used for focusing laser beams in the cavitation cavity; the flow guiding passage can guide deionized water into the caviation cavity; the one-way valve is arranged in the flow guiding passage. According to the abrasive flow micropore polishing device, lasers are focused to cavitate the deionized water to form a large local pressure and impact the separation device, and the abrasive fluid flows and is pushed into the micropores at high speed and rubs the pore walls of the micropores to reduce the roughness of the inner surface of the micropores, so as to achieve the polishing on the micropores. The invention further discloses an abrasive flow micropore polishing process for highly effectively and ultra-precisely polishing the micropores.
Owner:GUANGDONG UNIV OF TECH

Transition-to turbine seal apparatus and transition-to-turbine seal junction of a gas turbine engine

One embodiment of a transition-to-turbine seal (320) comprises an upstream portion (322) adapted to engage a flange (416) of a transition (400). The upstream portion (322) may be U-shaped in cross-sectional profile and comprises a primary wall (324) that comprises a proximal section (325) and a distal section (326) relative to a hot gas path (170). The proximal section (325) comprises a plurality of recesses (327) which are spaced apart and separated by intervening wall (328). In each recess (327) is provided one or more outlets (329) of cooling fluid holes (339). The outlets (329) communicate via the cooling fluid holes (339) with a supply of compressed cooling fluid, such as compressed air that is provided from the compressor. During operation the outlets (329) release this fluid into the respective recesses (327). The flow of cooling fluid through such outlets (329) in the respective recesses (327) provides for a more uniform cooling effect that includes impingement and convective cooling. Further, the outlets and recesses reduce the likelihood of hot gas ingestion due to local pressure gradients. Toward its downstream end, the seal (320) also comprises a downstream groove (321) which is adapted to engage a lip (138, 139) of a row 1 vane segment (130). Variations of the transition-to-turbine seal are described.
Owner:SIEMENS ENERGY INC

Two-mode therapeutic mattress system

A two-mode therapeutic mattress system is provided, including a non-powered air mattress, a pressure dispersion cushion, and a selectively operable air diffusion coverlet in a common modular assembly for improved medical management of skin care. The non-powered air mattress includes longitudinal air cylinders providing a static air support system inflated to predetermined pressure. The longitudinal air cylinders are in pressure communication with elasticized reservoirs, in that the air level in the elasticized reservoirs dynamically reacts to changes in pressure in the longitudinal air cylinders, for example upon receipt of a patient upon the mattress system. The pressure dispersion cushion facilitates pressure relief with a number of lateral and longitudinal cuts resulting in a plurality of separate upright support cells, the size and construction of which may vary over the surface of the pressure dispersion cushion so as to provide selective support characteristics. The air diffusion coverlet contains a plurality of air pockets. The air diffusion coverlet operates in two modes: a “therapy mode” such that compressed air from an air compressor is pumped to the air diffusion coverlet, and an “off” mode in which the air pockets collapse to provide a suitable and relatively smooth bedding component to the therapeutic mattress system. The non-powered air mattress, pressure dispersion cushion, and selectively operable air diffusion coverlet cooperate to provide a single product that addresses localized pressure, maceration, shear stress, and dynamic changes in a patient's condition during the course of time.
Owner:SPAN-AMERICA MEDICAL SYSTEMS
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