公开(公告)号：US4966217A

公开(公告)日：1990-10-30

申请号：US309165

申请日：1989-02-13

申请人： Scott A. Dechambeau ,  Robert Torkelson ,  David Thompson

发明人： Scott A. Dechambeau ,  Robert Torkelson ,  David Thompson

IPC分类号： E04H5/06

CPC分类号： E04H5/06

摘要： A safety cover 10 for automotive service pits 1 is constructed of square cross section hollow support members 11 welded to alternate links of double pitched roller chain segments 15. Cover 10 is divided into two halves wherein each half has support members 11 perpendicularly welded to two lengths of chain 15 at each end of support members 11. Support members 11 are further disposed in parallel spaced relation one to the other. Roller chain segments 15 are longitudinally supported at the top edges of the pit side walls 5 by opposing segments of C-channel 12. U-shaped bends 18 are provided in the lower lip 17 of opposing C-channel segments 12 and are disposed at, at least, one end which is adjacent an end wall 6 of automotive service pit 1. U-shaped bends 18 provide a receiving pocket for receiving the double pitched roller chain 15 and connecting support members 11 when cover 10 is slid into the open position.C-channel 12 and double pitched roller chain 15 are constructed of suitable materials such that the relative coefficient of friction between roller chain 15 and C-channel 12 inhibits sliding of the cover with the addition of any weight, e.g. a person standing on the cover.

摘要翻译： 用于汽车服务坑1的安全盖10由方形横截面的中空支撑构件11构成，焊接到双斜距滚子链条15的交替连杆上。盖10被分成两半，其中每一半具有垂直焊接到两个长度的支撑构件11 在支撑构件11的每一端处的链条15。支撑构件11进一步以彼此平行的间隔关系布置。 辊链段15通过相对的C形通道12的部分在纵向支撑在凹坑侧壁5的顶部边缘处.U形弯曲部分18设置在相对的C形槽段12的下唇部17中， 至少一端与汽车维修凹坑1的端壁6相邻。当盖10滑入打开位置时，U形弯头18提供用于接收双斜距滚子链15和连接支撑构件11的接收凹部。 C沟道12和双斜距滚子链15由合适的材料构成，使得滚子链15和C形通道12之间的相对摩擦系数可以通过添加任何重量来抑制盖的滑动。 一个站在封面上的人。