Patent ID: 8132389

Claim:
A method for securing an anchor bolt in a concrete structure, said concrete structure being created by pouring liquid concrete into a form and allowing said concrete to harden, said form having an inward facing side, an outward facing side, and at least one form hole passing therebetween, comprising: a. providing a bolt retainer having a first side, a second side, and a through hole passing from said first side to said second side; b. said through hole having a retaining edge having a first diameter; c. providing an anchor bolt having a threaded portion, with said threaded portion being sized to engage said retaining edge; d. providing a tube having a bore, an inner flange and an outer flange; e. providing a cap having an open end and a closed end, said cap including a threaded hole passing through said closed end; f. providing an installation bolt having a head and a threaded portion configured to engage said threaded hole in said cap; g. placing said second side of said bolt retainer against said inner flange of said tube; h. placing said open end of said cap against said first side of said bolt retainer, so that a cavity is formed on said second side of said bolt retainer; i. placing said outer flange of said tube against said inward facing side of said form in a position whereby said bore of said tube aligns with said form hole; j. passing said installation bolt through said form hole while leaving said head of said installation bolt outside of said outward facing side of said form; k. passing said threaded portion of said installation bolt through said bore, through said through hole in said bolt retainer and threading said threaded portion into said threaded hole in said cap; l. tightening said installation bolt so that said cap, said bolt retainer, and said tube are drawn together and drawn against said inward facing side of said form; m. pouring said liquid concrete into said form and allowing said concrete to harden; n. removing said installation bolt; o. removing said form; and p. driving said anchor bolt through said bore and through said through hole in said bolt retainer, thereby securing said anchor bolt to said concrete structure.