Patent ID: 7722295

Claim:
A bolt and anchor assembly for securing a mine roof bolt, comprising: a bolt; a shell disposed on said bolt, said shell having a first end and a second end; an expansion member axially disposed on said bolt adjacent said second end of said shell for expanding said shell to anchor said elongated bolt in an associated bore hole; and a support device axially disposed on said bolt adjacent said first end of said shell, engagement between said support device and said shell sequentially (1) forces said expansion member into said shell to expand said shell to anchor said bolt in said associated bore hole while said support device remains axially fixed relative to said shell and (2) then only after said bolt is anchored in said associated bore hole allows axial movement of said support device in a direction toward and relative to said shell, a base ring at said first end of said shell includes at least one split that extends to a recess defined between adjacent fingers of said shell and thereby facilitates said axial movement of said support device in said direction toward and relative to said shell to allow said support device to move through said base ring.