Patent ID: 11939199
Assignee: nan
Field: Handling (Mechanical engineering)
Classification: CPC B  E | IPC B  E

Claim 14:
15. An extension arm accessory unit for a drywall crane fork assembly, comprising:
a drywall crane fork assembly including a fork carrier beam carrying a pair of lifting forks;
a mounting bracket carried on said fork carrier beam;
said mounting bracket having a top wall and bottom wall interconnected by a first sidewall to define a generally C-shaped arrangement, wherein said top wall and bottom wall extend parallel to each other and said first sidewall is perpendicular to said top and bottom walls, and wherein said fork carrier beam is disposed between said top and bottom walls;
a removable second sidewall releasably attached to said mounting bracket, wherein said second sidewall extends between said top wall and said bottom wall in a perpendicular arrangement opposite said first sidewall so that said fork carrier beam is disposed between said first and second sidewalls;
a tensioning member carried by said second sidewall biasing against said fork carrier beam and drawing said first sidewall against said fork carrier beam to secure said mounting bracket to said beam;
an extension arm port carried on an exterior side of said first sidewall, wherein said extension arm port includes a port top wall, a port bottom wall and a port sidewall interconnecting said port top and port bottom walls to define a hollow interior extending along an axis parallel to a length of said first sidewall;
an extension arm carried in said extension arm port, wherein said extension arm has a generally L-shaped arrangement with a first arm portion adjustably carried in said extension arm port, and a second arm portion disposed at a distal end of said first arm portion and extending perpendicular to said first arm portion;
whereby said mounting bracket is removably mountable around said fork carrier beam and provides said extension arm extending in an adjustable arrangement perpendicular to said lifting forks of the drywall crane fork assembly to assist with sliding drywall off said fork assembly over an extended distance.