公开(公告)号：US20180162329A1

公开(公告)日：2018-06-14

申请号：US15373765

申请日：2016-12-09

申请人： Willam R. Grosz

发明人： Willam R. Grosz

IPC分类号： B60T3/00

CPC分类号： B60T3/00 ,  B60S9/18

摘要： A jack block and stop for a trailer includes an internal relatively lightweight support structure, a bottom surface having a relatively flat aspect to provide stable support when weight is applied on said jack block and stop, an upper surface having relatively flat aspect and a central open surface entirely extending through from said upper surface to said bottom surface which is large enough to at least part of a trailer part to retain said jack block thereabout in a stored mode.