公开(公告)号：US10208449B2

公开(公告)日：2019-02-19

申请号：US15607464

申请日：2017-05-27

申请人： Daniel Ruckel

发明人： Daniel Ruckel

IPC分类号： E02D29/14 ,  E02D29/12

摘要： A temporary manhole cover and its methods of use are configured to prevent an entire person from falling into a manhole, while providing a unique structure, adjustable in some embodiments, that allows access for a user to simultaneously reach through and/or pass objects through the temporary manhole cover when it is installed in a manhole. The structure may include an annular perimeter portion optionally having an L-shaped cross-section defining a circular interior opening there-through, a first set of two parallel laterally-separated cross-members each attached with and extending across the circular opening, and a second set of two parallel laterally-separated cross-members each extending perpendicularly between and attached with the first set of two parallel laterally-separated cross-members.

公开(公告)号：US20170342676A1

公开(公告)日：2017-11-30

申请号：US15607464

申请日：2017-05-27

申请人： Daniel Ruckel

发明人： Daniel Ruckel

IPC分类号： E02D29/14 ,  E02D29/12

CPC分类号： E02D29/1409 ,  E02D29/12 ,  E02D29/14 ,  E02D2200/1607 ,  E02D2220/00 ,  E02D2300/0035

摘要： Provided are various examples of a temporary manhole cover and its methods of use configured to prevent an entire person from falling into a manhole, while providing a unique structure, adjustable in some embodiments, that allows access for a user to simultaneously reach through and/or pass objects through the temporary manhole cover when it is installed in a manhole. The structure may include an annular perimeter portion optionally having an L-shaped cross-section defining a circular interior opening there-through, a first set of two parallel laterally-separated cross-members each attached with and extending across the circular opening, and a second set of two parallel laterally-separated cross-members each extending perpendicularly between and attached with the first set of two parallel laterally-separated cross-members.