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    MANHOLE COVER SECURITY LOCK WITH CONTROLLED PRESSURE RELEASE
    3.
    发明公开
    MANHOLE COVER SECURITY LOCK WITH CONTROLLED PRESSURE RELEASE 有权
    井盖防盗锁，锁住控制的压力去除

    公开(公告)号：EP2069578A2

    公开(公告)日：2009-06-17

    申请号：EP07809475.2

    申请日：2007-06-12

    申请人： Stadler, David M.

    发明人： Stadler, David M.

    IPC分类号： E02D29/14

    CPC分类号： E02D29/1427 ,  E02D29/1436

    摘要： A method for controllably releasing venting gases from a manhole space around the perimeter of a manhole cover by allowing the manhole cover to rise up in stages upon development of upward forces in an explosion to vent gases developed by the explosion while being restrained from being completely blown free except under extreme conditions. A lock body mounts a latch slide which has an outer end and which can be extended to prevent removal of the manhole cover. When a shear pin fails the lock body pivots down, to a limited extent, and a secondary shear pin can also be included allowing the cover to be blown completely free upon development of pressures of a great magnitude. A slotted skirt is used to direct venting gas flow so as to retard the inflow of free air and attenuate the explosion.

    LOCKING DEVICE AND METHOD FOR CATCH BASIN AND MANHOLE COVERS, AND THE LIKE
    4.
    发明公开
    LOCKING DEVICE AND METHOD FOR CATCH BASIN AND MANHOLE COVERS, AND THE LIKE 有权
    锁定设备和程序AUFFANGBECKEN-，人孔盖和LIKE

    公开(公告)号：EP1534965A2

    公开(公告)日：2005-06-01

    申请号：EP03785223.3

    申请日：2003-08-12

    申请人： Stadler, David M.

    发明人： Stadler, David M.

    IPC分类号： F16B21/00

    CPC分类号： E02D29/1427 ,  E03F5/06 ,  E03F2005/063 ,  E03F2005/065 ,  E03F2005/066

    摘要： A locking device and method for securing a cover as for a catch basin or manhole in position including two elongate members pivotally connected together end to end so as to be able to articulate. The members are held aligned while being inserted through a cover opening suspended in Said opening an a flange an the upper member, the lower member then released to be angled by a spring force to wedge against sidewall and an edge of the cover opening. A holt extending through the top threaded into a trunnion extending across an intermediate space of the lower member draws the lower member up to create a powerful wedging action to prevent cover removal. The holt head is recessed into the flange and configured with a special shape engageable only with a special tool to be tamper resistant. A protective plastic cap covers the bolt head and has protrusions sheared off when the cap is removed to provide a tamper indication. A miniature radio transmitter can be installed beneath the cap to transmit an alarm signal when the cap is removed. The locking device is used with a modified manhole cover by installing an adaptor sleeve defining a rectangular opening through which the locking device is inserted, and by connecting an extension arm to the lower member bottom end by use of a shear pin and pivot holt allowing release of the locking device and cover in the event of an explosion.

    Manhole cover security lock with controlled pressure release
    6.
    发明公开
    Manhole cover security lock with controlled pressure release 有权
    与控制泄压井盖安全锁

    公开(公告)号：EP2685009A3

    公开(公告)日：2014-11-26

    申请号：EP13164388.4

    申请日：2007-06-12

    申请人： Stadler, David M.

    发明人： Stadler, David M.

    IPC分类号： E02D29/14

    CPC分类号： E02D29/1427 ,  E02D29/1436

    摘要： A method of controllably venting gases generated by explosions in a manhole space having a manhole cover extending over said manhole space received within an opening in a frame structure, comprising the steps of arranging locking features on a perimeter of said manhole cover spaced apart from each other and extending radially outwardly to be aligned beneath portions of a said frame structure extending around said opening and with a vertical clearance between said locking features and said portions of said structure so as to allow said manhole cover to rise up in the event of an explosion to clear said structure and thereby create an annular gap between the underside of the cover and the top of said structure allowing venting of gases from said manhole space; and preventing further vertical movement of said manhole cover by interengagement of said locking features and said structure portions upon continued upward vertical movement of said manhole cover to thereby prevent said manhole cover from being blown completely free of said structure and able thereafter to drop down over said opening in said frame structure.

    Manhole cover security lock with controlled pressure release
    7.
    发明公开
    Manhole cover security lock with controlled pressure release 有权
    带控制压力释放的井盖安全锁

    公开(公告)号：EP2685009A2

    公开(公告)日：2014-01-15

    申请号：EP13164388.4

    申请日：2007-06-12

    申请人： Stadler, David M.

    发明人： Stadler, David M.

    IPC分类号： E02D29/14

    CPC分类号： E02D29/1427 ,  E02D29/1436

    摘要： A method of controllably venting gases generated by explosions in a manhole space having a manhole cover extending over said manhole space received within an opening in a frame structure, comprising the steps of arranging locking features on a perimeter of said manhole cover spaced apart from each other and extending radially outwardly to be aligned beneath portions of a said frame structure extending around said opening and with a vertical clearance between said locking features and said portions of said structure so as to allow said manhole cover to rise up in the event of an explosion to clear said structure and thereby create an annular gap between the underside of the cover and the top of said structure allowing venting of gases from said manhole space; and preventing further vertical movement of said manhole cover by interengagement of said locking features and said structure portions upon continued upward vertical movement of said manhole cover to thereby prevent said manhole cover from being blown completely free of said structure and able thereafter to drop down over said opening in said frame structure.

    摘要翻译： 1。一种可控制地排放在人孔空间中由爆炸产生的气体的方法，所述人孔空间具有延伸越过在框架结构中的开口内容纳的所述人孔空间的人孔盖，所述方法包括以下步骤：在所述人孔盖的周边上彼此间隔开地布置锁定特征 并沿径向向外延伸，以便在围绕所述开口延伸的所述框架结构的部分下方对齐，并且在所述锁定结构和所述结构的所述部分之间具有垂直间隙，以便在发生爆炸时允许所述井盖升起 清除所述结构并由此在所述盖的下侧和所述结构的顶部之间形成环形间隙，以允许从所述人孔空间排出气体; 并且在所述井盖继续向上垂直移动时，通过所述锁定部件和所述结构部分的相互接合防止所述井盖的进一步垂直运动，从而防止所述井盖被完全吹离所述结构并且随后能够落在所述结构上 在所述框架结构中打开。

    TELESCOPING BOLLARD WITH SCREW DRIVE
    8.
    发明公开
    TELESCOPING BOLLARD WITH SCREW DRIVE 审中-公开
    伸缩POLLER线性驱动

    公开(公告)号：EP1910621A1

    公开(公告)日：2008-04-16

    申请号：EP05784708.9

    申请日：2005-08-04

    申请人： Stadler, David M.

    发明人： Stadler, David M.

    IPC分类号： E01F13/04 ,  E01F9/019

    CPC分类号： E01F13/046 ,  E01F9/646

    摘要： The present invention includes a bollard assembly 1 containing an an elongated housing 4. A bollard 2 is spaced radially inward of the housing 4 and is axially displaceable therein. A threaded drive shaft receiver 32 is centrally fixed within the housing 4 for threaded reception of a threaded drive shaft 30. The threaded drive shaft 30 is thereby suspended within the housing 4 and threadedly received by the receiver 32. Upon activation of the drive shaft 30 operably connected to the bollard 2, rotation of the drive shaft 30 establishes simultaneous vertical displacement of the drive shaft 30 and the bollard 2.