Patent ID: 7942392

Claim:
A clamping or spreading tool, comprising: a push or pull rod to which a movable jaw is fixed; a stationary jaw; a gear mechanism by which the movable jaw is movable towards or away from the stationary jaw by displacement of the push or pull rod in a clamping or spreading direction and by which clamping or spreading forces are applied between the jaws; a lock that blocks displacement of the push or pull rod in an opening direction opposite to the clamping or spreading direction so as to maintain the clamping or spreading forces generated between the jaws; and a force dissipating mechanism for dissipating the clamping or spreading forces stored that allows absorption displacement of the push or pull rod in the opening direction along a predetermined absorption path and blocks absorption displacement of the push or pull rod in the opening direction beyond the predetermined absorption path upon release of the lock, said force dissipating mechanism including a release lever to release the lock and an entraining slide element to block the absorption displacement of the push or pull rod in the opening direction beyond the predetermined absorption path upon release of the lock wherein said release lever has a contacting member which is offset and contacts a entrailing projection thereby producing said absorption displacement.