Patent ID: 7111707

Claim:
An anchorage device for securing a workman to a flanged structural member, said anchorage device comprising: (a) an elongated cross-member defining a plurality of longitudinally-spaced apertures; (b) first and second clamps located on said cross-member, and adapted to engage respective opposing flanges of the structural member, said first clamp being slidably mounted for movement along said cross-member relative to said second clamp; (c) an adjustable pawl attached to said first clamp, and comprising: (i) a locking tooth adapted for residing in a selected one of said plurality of apertures of said cross-member, thereby releasably locking said first clamp in a fixed clamp-locking position on said cross-member relative to said second clamp; and (ii) a first engagement portion for receiving a manual force applied in a first direction to move said pawl and said locking tooth relative to said cross-member; (d) a pawl housing attached to said first clamp adjacent said pawl and defining a second engagement portion for receiving a manual force applied in a second direction opposite the first direction; and (e) whereby said first clamp is releasable for free sliding movement along said cross-member by applying in the second direction manual force to said housing at the second engagement portion, thereby disengaging said locking tooth from said cross-member; and applying in the first direction manual force to said pawl at the first engagement portion, thereby moving said locking tooth out of the selected aperture and away from said cross-member.