Hydrophobic silica aerogels
    1.
    发明授权
    Hydrophobic silica aerogels 失效
    疏水二氧化硅气凝胶

    公开(公告)号:US5738801A

    公开(公告)日:1998-04-14

    申请号:US600929

    申请日:1996-02-29

    摘要: Hydrophobic silica aerogels obtainable by reacting a waterglass solution with an acid at a pH of from 7.5 to 11, substantially removing ionic constituents from the resulting silica hydrogels by washing with water or dilute aqueous solutions of inorganic bases, while the pH of the hydrogels is kept in the range from 7.5 to 11, displacing the aqueous phase contained in the hydrogel by an alcohol, and subsequent supercritical drying of the resulting alcogels.

    摘要翻译: PCT No.PCT / EP94 / 02822 Sec。 371日期1996年2月29日 102(e)日期1996年2月29日PCT 1994年8月25日PCT公布。 出版物WO95 / 06617 日期1995年3月9日通过使水玻璃溶液与pH值为7.5〜11的酸反应获得的疏水性二氧化硅气凝胶,通过用水或稀释的无机碱水溶液洗涤,基本上从所得二氧化硅水凝胶中除去离子组分,同时pH 的水凝胶保持在7.5至11的范围内,用醇将水凝胶中所含的水相置换,随后对所得的凝胶进行超临界干燥。

    Apparatus for inserting and/or removing printed circuit boards into and
from slotted change pallets
    2.
    发明授权
    Apparatus for inserting and/or removing printed circuit boards into and from slotted change pallets 失效
    用于将印刷电路板插入和/或移出开槽变换托盘的装置

    公开(公告)号:US4903818A

    公开(公告)日:1990-02-27

    申请号:US196499

    申请日:1988-05-20

    CPC分类号: H05K13/0061

    摘要: An apparatus is disclosed which serves to insert and/or remove printed circuit boards into and out of slotted change pallets which are adapted to hold printed circuit boards in a generally vertical orientation and out of contact with each other. A roller conveyor is provided for conveying each printed circuit board in a horizontal orientation into a pivoted board holder or gripper, which is adapted to grip the printed circuit board preferably at its leading edge and to move the printed circuit board to a position in which the printed circuit board is substantially vertical and disposed over one of the slots formed in a change pallet that has been positioned below the board holder or gripper. The board holder or gripper is adapted to perform an outward pivotal movement from the bottom edge of the generally vertical board as the change pallet is advanced further.

    摘要翻译: 公开了一种用于将印刷电路板插入和/或移出开槽的变换托盘的装置,其适于将印刷电路板保持在大致垂直的取向并且彼此不接触。 提供了一种辊式输送机,用于将每个印刷电路板以水平方向输送到枢转板保持器或夹持器中,该枢转板保持器或夹持器优选地在其前缘处夹持印刷电路板,并将印刷电路板移动到其中 印刷电路板基本垂直并且设置在形成在已经位于板保持器或夹持器下方的更换托盘中的一个槽之间。 当更换托盘进一步前进时,板保持器或夹持器适于从大体垂直板的底部边缘进行向外的枢转运动。

    Solid fuel stove utilizable as a fireplace
    3.
    发明授权
    Solid fuel stove utilizable as a fireplace 失效
    固体燃料炉可用作壁炉

    公开(公告)号:US4329975A

    公开(公告)日:1982-05-18

    申请号:US178308

    申请日:1980-08-15

    IPC分类号: F24B1/192 F24B13/00 F23M7/00

    摘要: A so-called stack stove, especially for the burning of solid fuels and particularly wood has a hood or apron extending downwardly and outwardly along the upper portion of at least its front above the opening into the combustion chamber. A window door is mounted so as to be shiftable upwardly into the hood and locked therein so that it is substantially completely concealed by the hood when the stove is operated in a fireplace mode. In its lower position the door closes the chamber opening and the stove can function as a sealed stove with limited air entry for efficient combustion.

    摘要翻译: 特别是用于燃烧固体燃料,特别是木材的所谓的堆垛炉具有沿着至少其前部的至少其上部的上部向上和向外延伸的罩或围板进入燃烧室。 窗户门被安装成可向上移动到发动机罩中并锁定在其中,使得当炉子以壁炉模式操作时,门盖基本上被罩罩完全隐藏。 在其较低的位置,门关闭室的开口,并且炉子可以用作具有有限的空气入口的密封炉,以进行有效的燃烧。

    Process and apparatus for cutting and trimming printed circuit board
workpieces
    4.
    发明授权
    Process and apparatus for cutting and trimming printed circuit board workpieces 失效
    用于切割和修整印刷电路板工件的工艺和设备

    公开(公告)号:US4985982A

    公开(公告)日:1991-01-22

    申请号:US227656

    申请日:1988-08-03

    摘要: This invention relates to a process and an apparatus for cutting and trimming printed circuit board workpieces, particularly printed multilayer circuit board workpieces, which are cut to an exactly predetermined, selectable size at high speed in an operation in which the workpieces are subjected only to relatively low stresses. The workpieces are cut and trimmed and are profiled at each of their edges in a single operation. This is accomplished by means of two circular sawblades, which extend in a common plane and have interdigitating sawteeth, which preferably have diamond cutting edges. The interdigitating sawteeth of the two sawblades cut into the workpiece from opposite broadsides and the sawteeth of each of the sawblades penetrate into the workpiece only in part of its thickness. As a result, the circuit board workpiece is cut and trimmed without a formation of burrs and in the same operation is formed with at its edge portion with a profile that is determined by the profile of those side faces of said sawteeth which face said edge portion.

    摘要翻译: 本发明涉及一种用于切割和修整印刷电路板工件,特别是印刷的多层电路板工件的方法和装置,其在工件仅被相对地操作的操作中被高速切割成精确预定的可选择的尺寸 低应力 工件被切割和修剪,并在其每个边缘进行单一操作。 这是通过两个圆形锯片来实现的,锯条在公共平面上延伸,并且具有交错的锯齿,其优选地具有金刚石切割边缘。 两个锯片的交叉锯条从相对的宽边切入工件,每个锯片的锯齿只在其厚度的一部分上渗入工件。 结果,电路板工件被切割和修整而不形成毛刺,并且在相同的操作中,在其边缘部分处形成有由所述锯齿的面向所述边缘部分的那些侧面的轮廓确定的轮廓 。

    Safety belt system with pyrotechnically driven turning device
    5.
    发明授权
    Safety belt system with pyrotechnically driven turning device 失效
    安全带系统带有烟火驱动的转向装置

    公开(公告)号:US4014479A

    公开(公告)日:1977-03-29

    申请号:US664313

    申请日:1976-03-05

    IPC分类号: B60R22/46 A62B35/02 B65H75/48

    CPC分类号: B60R22/4628 B60R22/4676

    摘要: A winding assembly for a vehicle safety belt system is provided with a belt rolling device and a high speed turning device adapted upon actuation of a propellant charge to wind the safety belt at high speeds as a result of the generation of pyrotechnical gases. The high speed turning device and the belt rolling device are interconnected when a given rate of vehicle deceleration is achieved and the high speed turning device is constructed with a rotatably mounted shaft, a pair of annular chambers extending about the shaft, a pair of vanes affixed to the shaft each extending into one of the annular chambers, a first blade fixed within one of the annular chambers and arranged to be engaged by one of the vanes and a second blade extending into the other of the annular chambers and arranged to be engaged by the other vane with the second blade being mounted in driving relationship through the interconnecting means to impart driving rotation of the shaft to the belt rolling device when the high speed turning device is driven by the pyrotechnical gases. The fixed blade is adapted to engage the first vane in order to stop rotation of the vanes and winding of the safety belt.

    摘要翻译: 用于车辆安全带系统的绕组组件设置有带式滚动装置和高速旋转装置,其适用于由于产生烟火气体而以高速度驱动推进剂装料来施加安全带。 当实现给定的车辆减速时,高速车削装置和带滚动装置相互连接,高速车削装置由可旋转地安装的轴构成,一对围绕轴延伸的环形室,一对叶片 每个延伸到所述环形室中的一个中的固定在所述环形室中的一个中的所述轴,所述第一叶片固定在所述环形室之一内并且布置成与所述叶片中的一个接合,以及延伸到所述环形室中的另一个中的第二叶片, 具有第二叶片的另一个叶片通过互连装置以驱动关系安装,以便当高速转动装置被烟火气体驱动时,将轴的驱动旋转传递给带滚动装置。 固定刀片适于接合第一叶片以便阻止叶片的旋转和安全带的卷绕。

    Apparatus for storing and transporting printed circuit boards
    6.
    发明授权
    Apparatus for storing and transporting printed circuit boards 失效
    用于存储和运输印刷电路板的设备

    公开(公告)号:US5282717A

    公开(公告)日:1994-02-01

    申请号:US914899

    申请日:1992-07-16

    CPC分类号: H05K13/0061

    摘要: An apparatus for storing and transporting printed circuit boards is disclosed. The apparatus comprises a body having a base defining an upwardly facing support surface for supporting a stack of printed circuit boards. The support surface may optionally have a slight rearward inclination. Elongate annular members are secured to the base on both sides and extend adjacent to the supporting surface and remotely therefrom in the direction in which the stack of printed circuit boards is to be arranged. Liners are provided with holes through which the annular members extend so that the liners are movable between a suspended stand-by position to an operative position in which the liners are horizontally supported on or are vertically suspended between adjacent printed circuit boards. Two symmetrically arranged synchronized belt drives are mounted on the base and comprise belts extending parallel to elongate annular members. Each belt defines an elongate hole, which is similar to and registers with the elongate hole defined by the adjacent annular members. Each of the belt drives comprises a rotating gripper having two gripping jaws, each of which is pivotally movable by a stationary actuator. Sensors automatically position the grippers near one of the liners regardless of the position of the liner.

    摘要翻译: 公开了一种用于存储和运输印刷电路板的设备。 该装置包括具有限定向上的支撑表面的基部的主体,用于支撑一叠印刷电路板。 支撑表面可以可选地具有稍微的向后倾斜。 细长的环形构件在两侧被固定到基座上并且在支撑表面附近延伸并且沿着布置电路板堆叠的方向远离它们。 衬套设有孔,环形构件穿过这些孔延伸,使得衬垫可以在悬挂的待机位置到工作位置之间移动,在该位置中衬垫水平地支撑在相邻的印刷电路板之间或垂直悬挂在相邻的印刷电路板之间。 两个对称布置的同步皮带传动装置安装在基座上并且包括平行于细长环形构件延伸的皮带。 每个皮带限定了细长的孔,其与由相邻的环形构件限定的细长孔相似并与其对准。 每个带驱动器包括具有两个夹钳的旋转夹具,每个夹爪可由静止的致动器枢转运动。 传感器自动将夹具靠近其中一个衬垫,而不管衬管的位置如何。

    Process and apparatus for peeling a protective film from an exposed
photoresist coating on a printed circuit board
    7.
    发明授权
    Process and apparatus for peeling a protective film from an exposed photoresist coating on a printed circuit board 失效
    用于从印刷电路板上暴露的光致抗蚀剂涂层剥离保护膜的方法和设备

    公开(公告)号:US4685991A

    公开(公告)日:1987-08-11

    申请号:US890699

    申请日:1986-07-25

    摘要: The apparatus comprises a board-clamping device for clamping a printed circuit board at an edge thereof in a predetermined position, at least one pair of gripping jaws, which can be moved toward and away from the plane of travel for the printed circuit boards by a movement having a component in the peeling direction, which is oblique to the direction of conveyance. The two gripping jaws of said pair are adapted to be closed in that only one jaw of said pair is moved in the peeling direction. Each of the jaws of the pair has an edge which is parallel to the plane of travel and transverse to the peeling direction. Said edge is engageable with the printed circuit board. Said edges of the gripping jaws of said pair define between them a nip. The apparatus also comprises a conveyor, which defines a plane of travel for each printed circuit board and serves to move each printed circuit board to a position in which the printed circuit board is engageable by the gripping jaws of said pair thereof.

    摘要翻译: 该装置包括用于将印刷电路板在其边缘处夹持在预定位置的板夹紧装置,至少一对夹爪,其可以朝着印刷电路板的行进平面移动并远离印刷电路板的行进平面 具有沿着输送方向倾斜的剥离方向的成分的运动。 所述对的两个夹爪适于封闭,因为所述一对的仅一个夹爪沿剥离方向移动。 该对的每个夹爪具有平行于行进平面并横向于剥离方向的边缘。 所述边缘可与印刷电路板接合。 所述对的夹爪的所述边缘在它们之间限定一个辊隙。 该设备还包括传送器,其限定每个印刷电路板的行进平面,并且用于将每个印刷电路板移动到印刷电路板可由其对的夹持爪接合的位置。