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    • 41. 发明授权
      US4169538A Adjustable door arrangement for a vacuum chamber 失效
    • Adjustable door arrangement for a vacuum chamber
    • US4169538A
    • 1979-10-02
    • US929118
    • 1978-07-28
    • Harry L. Bird , David T. Sutherland
    • Harry L. Bird , David T. Sutherland
    • F16J13/20 , B65D43/14 , B65D51/04
    • F16J13/20
    • Disclosed is a door and hinge frame arrangement for external-pressure vessels or vacuum chambers which has a five-way adjustment capability to assure that the door properly seals over the chamber entrance without the necessity for the application of large forces. A chamber door (which may be either circular or square) is pivotally mounted in a vertical position between ends of horizontal arms of a "C" shaped frame assembly. The "C" shaped frame comprises a vertical hinge member which is pivotally mounted at the bottom and top ends thereof, and the two horizontal arms extend from opposite ends of the straight member. Thrust bearings are provided to support the weight of the door and frame at the lower pivot of the vertical member. The vertical position of the door and frame can be adjusted by varying the thickness of the thrust bearings at this point. Similarly, the vertical position of the door with respect to the frame can be varied by varying the width of thrust bearings at the lower pivot point where the door is mounted to the lower arm. Further, the horizontal position of the lower pivot point with respect to the lower arm can be varied by loosening bolts holding a slotted fitting and moving the fitting and pivot point linearly with respect to the arm. The horizontal position of the upper pivot point with respect to the upper arm can similarly be varied by loosening bolts in a slotted bearing block and moving the bearing block back and forth with respect to the arm. Finally, the upper arm comprises a first portion mounted to the pivotably mounted straight member and a second portion which is pivotably mounted to the free end of the first portion intermediate the ends of the second portion. A spring biased bolt arrangement is provided to allow the second portion to be adjustably pivoted with respect to the first portion so that the vertical alignment of the upper pivot point with respect to the lower pivot point can be adjusted thus changing the vertical plane of the door to conform to the plane of the face of the entrance of the vacuum chamber.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 42. 发明授权
      US4044918A High temperature, quick access door for high vacuum chambers 失效
    • High temperature, quick access door for high vacuum chambers
    • 高真空室高温快速检修门
    • US4044918A
    • 1977-08-30
    • US586961
    • 1975-06-16
    • Lynn J. Alton
    • Lynn J. Alton
    • B01J3/03 , F16J13/20 , B65D45/28
    • F16J13/20 , B01J3/03 , Y10S277/913 , Y10S277/921 , Y10T292/237
    • A door for an ultra-high vacuum chamber is disclosed which includes a sealing joint that maintains a hermetic seal when it is baked or otherwise subjected to high temperatures, while yet allowing an operator to have quick access into the interior of the chamber. The quick access door includes a vacuum flange adapted to be conventionally secured to a corresponding flange circumscribing an access port of a vacuum chamber. The door vacuum flange has a conical sealing surface about its inner periphery, and the door includes a sealing disc designed to hermetically mate therewith. That is, the sealing disc has a circumferential conical skirt providing a sealing edge and is mounted on a support arm which is selectively securable across the opening to position the sealing disc in front of the access opening. A drive arrangement is provided for moving the sealing disc from a retracted position adjacent the arm to a registering position in which such sealing disc closes the opening and engages the flange sealing surface. The drive further axially compresses the seal disc into the opening to generate stored energy in the disc which causes it to expand peripherally as necessary to accommodate any differential thermal expansion between the seal disc and the flange which otherwise might result in a vacuum leak.
    • 公开了一种用于超高真空室的门，其包括密封接头，当密封接头被烘烤或以其它方式受到高温时，密封接头保持气密密封，同时允许操作者快速进入腔室内部。 快速检修门包括真空法兰，其通常固定在环绕真空室的进入口的相应凸缘上。 门真空法兰围绕其内周具有锥形密封表面，并且门包括设计成与其密封配合的密封盘。 也就是说，密封盘具有提供密封边缘的周向圆锥形裙部，并且安装在支撑臂上，支撑臂可选择性地穿过开口固定，以将密封盘定位在进入开口的前方。 提供驱动装置，用于将密封盘从邻近臂的缩回位置移动到登记位置，在该位置中，这种密封盘封闭开口并接合凸缘密封表面。 驱动器进一步轴向地将密封盘压缩到开口中以在盘中产生储存的能量，这使得其在必要时在外围扩张以适应密封盘和凸缘之间的任何不同的热膨胀，否则可能导致真空泄漏。
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