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公开(公告)号:WO2010010362A9
公开(公告)日:2010-03-18
申请号:PCT/GB2009001840
申请日:2009-07-24
Applicant: STFC SCIENCE & TECHNOLOGY , STEVENS ROBERT
Inventor: STEVENS ROBERT
IPC: D01D5/00
CPC classification number: D01D5/0061 , D01D5/0076
Abstract: Apparatus and methods for electrospinning and/or electrospray are disclosed. The apparatus and methods are provided for electrospinning of fibre, or deposition of droplets on a surface by electrospraying. The apparatus comprises: a band tensioned between first and second rollers and curved around the rollers, an electric field generator for providing an electric field between an electrospinning zone at the first roller and a counter electrode, and a bath for containing liquid arranged to wet the band or regions of the band as it passes around the second roller. The band is arranged to transport liquid from the bath to the electrospinning zone for the production of fibres in said zone. The electric field generator may be arranged to provide an electric field between the counter electrode and the surface of the band where it is curved around the first roller.
Abstract translation: 公开了静电纺丝和/或电喷雾的装置和方法。 提供设备和方法用于纤维的静电纺丝,或通过电喷射在表面上沉积液滴。 该装置包括:在第一和第二辊之间张紧并围绕辊弯曲的带,用于在第一辊的静电纺丝区和反电极之间提供电场的电场发生器,以及用于容纳液体的浴槽, 当它通过第二个滚筒时,带子或带子的区域。 该带被设置成将液体从浴液输送到静电纺丝区域以在所述区域中生产纤维。 电场发生器可以被布置为在反电极与其围绕第一辊弯曲的带的表面之间提供电场。
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公开(公告)号:WO2005006387A3
公开(公告)日:2005-05-12
申请号:PCT/GB2004002962
申请日:2004-07-08
Applicant: COUNCIL CENT LAB RES COUNCILS , STEVENS ROBERT
Inventor: STEVENS ROBERT
IPC: A61B6/00 , G03G15/043 , H01J43/24
CPC classification number: H01J43/246 , A61B6/4429 , G03G15/0435
Abstract: A method of fabricating an electron multiplier array in which a plurality of apertures are etched through a construct (20) of a dynode layer (11) and an electrical-insulating layer (12) with a jet of hard powders (22). The construct (20) is then divided into smaller discrete segments and stacked such that the apertures in adjacent segments align to form channels. Alternatively, rather than dividing the construct (20) into smaller segments, a plurality of constructs (20) may instead be stacked to create a large-area electron multiplier array.
Abstract translation: 一种制造电子倍增器阵列的方法,其中通过打磨极层(11)的结构(20)和具有硬粉末射流(22)的电绝缘层(12)蚀刻多个孔。 然后将结构(20)分成较小的离散段并堆叠,使得相邻段中的孔对齐以形成通道。 或者,不是将结构(20)分成更小的部分,而是可以堆叠多个结构(20)以形成大面积的电子倍增器阵列。
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公开(公告)号:WO2004086964A3
公开(公告)日:2005-03-24
申请号:PCT/GB2004001439
申请日:2004-04-01
Applicant: COUNCIL CENT LAB RES COUNCILS , STEVENS ROBERT , GRAYER GEOFFREY HOWARD , TULLOCH ANDREW , PRATT NORMAN LESLIE , HUG EJAZ
Inventor: STEVENS ROBERT , GRAYER GEOFFREY HOWARD , TULLOCH ANDREW , PRATT NORMAN LESLIE , HUG EJAZ
IPC: A61B6/00 , G01T1/164 , G03G15/043 , H01J43/24 , H04N5/32
CPC classification number: G01T1/1645 , A61B6/4429 , G03G15/0435 , H01J43/243 , H04N5/32
Abstract: A large area detector (3) for use, for example, as an x-ray detector for medical imaging consists of a radiation sensitive detector (8) in combination with a monolithic amplification device consisting of a plurality of alternately stacked dynode and insulation layers having channels (6) extending therethrough in communication with respective signal collectors (10). The large area detector (3) is capable of being formed in tiles of 1 m or more whilst providing high resolution of the order of 50-60 pixels per mm .
Abstract translation: 例如,用作医学成像的X射线检测器的大面积检测器(3)包括与由多个交替堆叠的倍增电极和绝缘层组成的单片放大器件组合的辐射敏感检测器(8) 与各个信号收集器(10)连通的通道(6)。 大面积检测器(3)能够形成为1m 2或更大的瓷砖,同时提供高达50-60像素/ mm 2的分辨率。
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公开(公告)号:DE69901267T2
公开(公告)日:2002-11-28
申请号:DE69901267
申请日:1999-01-22
Applicant: STEVENS ROBERT
Inventor: STEVENS ROBERT
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公开(公告)号:DE69901267D1
公开(公告)日:2002-05-23
申请号:DE69901267
申请日:1999-01-22
Applicant: STEVENS ROBERT
Inventor: STEVENS ROBERT
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公开(公告)号:CA977788A
公开(公告)日:1975-11-11
申请号:CA170630
申请日:1973-05-08
Applicant: STEVENS ROBERT
Inventor: STEVENS ROBERT
IPC: A63B51/12
Abstract: An improved racket is provided, for tennis and similar games, which incorporates a means for adjusting the string tension so that a proper tension may be maintained at all times when the racket is in use, and so that the tension of the strings of the racket may be relieved when the racket is not in use. The racket includes a resilient frame with an elongated handle attached to one end. The frame has a looped head portion with holes extending around its periphery to accommodate the strings. One string is mounted on the frame in a series of lateral passes extending across the area circumscribed by the head portion of the frame, a second string is mounted on the frame in a series of passes which extend vertically across the circumscribed area. Two plastic-encased metal arms are mounted to extend partially around both lower sides of the head portion of the frame. Appropriate grooves are formed in the plastic casing of the arms, and the lower ends of the vertical passes are looped around these arms. The ends of the arms are attached to an adjusting means which serves to pull the vertical passes into tension, thereby producing a compressive load on the frame of the racket. The frame then extends its lateral dimension to redistribute the load and produce equalizing tension on the lateral passes.
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公开(公告)号:DE2323297A1
公开(公告)日:1973-11-29
申请号:DE2323297
申请日:1973-05-09
Applicant: STEVENS ROBERT
Inventor: STEVENS ROBERT
IPC: A63B51/12
Abstract: An improved racket is provided, for tennis and similar games, which incorporates a means for adjusting the string tension so that a proper tension may be maintained at all times when the racket is in use, and so that the tension of the strings of the racket may be relieved when the racket is not in use. The racket includes a resilient frame with an elongated handle attached to one end. The frame has a looped head portion with holes extending around its periphery to accommodate the strings. One string is mounted on the frame in a series of lateral passes extending across the area circumscribed by the head portion of the frame, a second string is mounted on the frame in a series of passes which extend vertically across the circumscribed area. Two plastic-encased metal arms are mounted to extend partially around both lower sides of the head portion of the frame. Appropriate grooves are formed in the plastic casing of the arms, and the lower ends of the vertical passes are looped around these arms. The ends of the arms are attached to an adjusting means which serves to pull the vertical passes into tension, thereby producing a compressive load on the frame of the racket. The frame then extends its lateral dimension to redistribute the load and produce equalizing tension on the lateral passes.
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公开(公告)号:CA2254771C
公开(公告)日:2001-01-30
申请号:CA2254771
申请日:1998-11-26
Applicant: STEVENS ROBERT
Inventor: STEVENS ROBERT
Abstract: In a dead axle wheel assembly having a hub and bearings mounted on a threaded spindle and held there by lock nuts to rotatably support a vehicle whee l, a safety lock comprising a sleeve, closed at an outer end and open at an inner end, the s leeve of a size, when in position secured to the spindle, to sit on and cover the outer e nd of the spindle with the sleeve's inner end spaced from it the lock nuts, and means asso ciated with the closed end of the sleeve to secure the sleeve to the other end of the s pindle, whereby, when in position on the spindle, the inner end of the sleeve is located to obstruct the lock nuts, if they become loosened, to keep them from disassociating from th e spindle. This safety lock provides a simple but effective construction for maintaining th e integrity of a dead axle wheel assembly.
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公开(公告)号:CA2268505A1
公开(公告)日:2000-10-12
申请号:CA2268505
申请日:1999-04-12
Applicant: GAGNON PHILIPPE , LIZOTTE MARCEL , STEVENS ROBERT W C , VARGHESE ZUBIN
Inventor: GAGNON PHILIPPE , LIZOTTE MARCEL , STEVENS ROBERT , VARGHESE ZUBIN
Abstract: An apparatus and a method for sorting items with a significant variance in size. This equipment utilises a series of paddle-style blades to convert a randomised array of conveyor-fed items first into a plurality of organised linear, one-by-one flows as is often required for machine-vision inspection, and secondly delivers elements of said flow into graded categories. In one embodiment, this system sorts skeins of herring roe, but the singulation stage may be used with equal utility on other product, especially where such product displays a wide variance in size. In said one embodiment, skeins are dumped, or otherwise delivered onto a conveyor, table, or other receiving surface. A first singulation stage of said apparatus divides, linearises, and separates a flow of said skeins so that said skeins are arranged lengthwise and conveyed onto a plurality of narrow inspection conveyors, through a grading station and onward to ejection stations. Said ejection stations employ air nozzles utilising the coanda effect to selectively remove said items from said narrow inspection conveyors. By utilising said air nozzles, a required separation between said items is minimised and solenoids controlling said air-flow may be mounted remotely and operate on a low volume of high-pressure air. Overall, gentle handling of a product being sorted is ensured.
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公开(公告)号:CA505884A
公开(公告)日:1954-09-21
申请号:CA505884D
Applicant: STEVENS ROBERT , STEVENS KENNETH D
Inventor: STEVENS KENNETH D , STEVENS ROBERT
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