Patent ID: 7581909
Filing Date: 2009-09-01
Classification: B21F,E04F

Abstract:
1. A coupling, having a longitudinal axis for attaching a threaded shaft to a structure, said coupling including: a threaded rod extending along said axis and to threadably engage the structure, the rod terminating at an end with a head having a tool engaging portion; and a turn member also extending along said axis and including a hollow base having a cavity within which said head is captively located, and a sleeve attached to the base and extending from the head and said rod along said axis, the sleeve including a treaded passage to threadably engage a shaft, the threaded passage of the sleeve having an end that opens into the cavity in the hollow base and has a transverse width that is less than the transverse width of the end of the rod with the head whereby the head is prevented from entering the passage and is thereby captively retained in said captivity, the threaded rod being rotatable about the longitudinal axis relative to said turn member with the head captively disposed in the cavity at the end of the threaded passage, wherein said tool engaging portion is disposed at the end of the threaded passage and is exposed to said passage and configured to provide for a tool to pass along said passage to engage said portion to enable a user to rotate said rod about said axis relative to said member with said head disposed in said cavity, wherein the cavity has an axial dimension that is of about the same size as an axial dimension of the head.