Wedging spanner for use in e.g. building sites, has blocking system blocking spanner, where blocking system is in form of pusher that is engaged against threaded rod and comprises tapping complementary to threading of rod

摘要

The spanner has a clamping head cooperated with a nut of a threaded rod (2). A blocking system (3) blocks the spanner, and is in a form of a pusher (4) that is engaged against the threaded rod. The blocking system comprises a tapping (5) complementary to threading of the rod. The pusher is mounted against an elastic return unit (6) i.e. spring, that forces the pusher in a blocking position.