A clamp assembly for mounting a device to a wheelchair, comprises a clamp 100 having a clamping portion and an attaching portion, where the clamping portion defines a substantially circular opening 126 extending from a first clamp end 132 to a substantially adjacent second clamp end 134, and where the first and second clamp ends both include at least one through hole. The through holes in the first and second clamp ends are substantially aligned. The attaching portion has mounting holes 144, 146 for mounting the clamp 100 on a wheelchair.
