Patent ID: 8616096

Claim:
A tool comprising: (a) a housing with a first end including a hub that pivotally connects the first end to the housing; (b) a lock mechanism disposed on the housing with a movable lock element wherein the lock element engages the hub to block the pivotal connection in a desired orientation with respect to the housing; (c) a drive assembly removably connected to the first end comprising a coupler and a drive shaft, the coupler including a proximate element, a remote element, and a biasing mechanism being disposed between the proximate element and the remote element and wherein the drive shaft is movably disposed between a first operable position and a second operable position; and (d) wherein the proximate element includes a first coupling surface disposed on an outer surface of the proximate element and the remote element includes a second coupling surface disposed on an inner surface of the remote element, wherein the drive shaft is normally disposed in the first operative position in which the first coupling surface does not engage the second coupling surface and wherein the first coupling surface engages the second coupling surface when the drive shaft is disposed in the second operative position.