公开(公告)号：US5012398A

公开(公告)日：1991-04-30

申请号：US466916

申请日：1990-01-18

申请人： Robert D. Jones ,  David M. Demeyer

发明人： Robert D. Jones ,  David M. Demeyer

IPC分类号： F21V21/16

CPC分类号： F21V21/16 ,  F21V21/15 ,  F21V21/30

摘要： A leveling device for leveling the orientation of a suspended light bar, beam, or cross-arm to which is mounted one or more light fixtures includes a bracket secured to the light bar and having an outwardly extending end. An adjustment cable is attached at opposite ends to the light bar and the outwardly extended end of the bracket, and passes through a pulley which is attached to the end of a suspension cable, which suspends the light bar and light fixtures from an elevated structure. An actuator member is attached between the pulley and the extended end of the bracket. Lengthening or retracting of the actuator member causes relational movement of the extended end of the bracket with respect to the pulley which in turn allows the adjustment cable to move through the pulley to shift the suspended support member and vertically align the suspension cable with the center of gravity of the suspended light bar to maintain the light bar in a level position counteracting leveling force against any opposite rotational movement of the light bar.

摘要翻译： 用于调平安装有一个或多个灯具的悬挂的灯杆，梁或横臂的取向的调平装置包括固定到灯条并具有向外延伸端的支架。 调节电缆连接到灯杆的相对端和支架的向外延伸的端部，并且穿过附接到悬挂电缆的端部的滑轮，该悬挂电缆将灯条和灯具从升高的结构悬挂下来。 致动器构件安装在滑轮和支架的延伸端之间。 致动器构件的延长或缩回导致支架相对于滑轮的延伸端的相互关系运动，这又允许调节电缆移动通过滑轮以移动悬挂的支撑构件，并使悬架电缆与 悬挂光条的重力，以将光条保持在与所述光条的任何相反的旋转运动相反的调平力的水平位置。