Patent ID: 7692108

Claim:
A lock-out device having a generally U-shaped cross section, configured to mount on a switch having a housing comprising a face and a sidewall oriented generally orthogonal to the face, the sidewall having a recess, and an operating handle operable between a first and a second position, said lock-out device comprising: a first leg portion and a second leg portion connected at a bight portion; said first and second leg portions and said bight portion configured in a generally U-shaped cross section; said first leg portion being further connected with a tab portion; said bight portion comprising a locating portion, and configured to be installed on the housing face; said locating portion being arranged to functionally locate said bight portion on the housing face; said tab portion comprising a first aperture configured to receive a blocking member; wherein at least one of said first and second leg portions has a protrusion configured to engage with the recess in the switch housing sidewall.