Throw lock assembly and bolt keeper assembly

A throw lock assembly to lock a gateway, the throw lock assembly comprising:

• a throw bolt;
• a bolt holder;
• and
• a bolt keeper, the throw lock assembly configured such that:
• the throw bolt is moveably coupled to the bolt holder;
• and
• the bolt keeper receives the throw bolt when the throw bolt is moved into a locking position;
• the bolt keeper comprising a buffer and a deflectable tongue, configured such that when the throw bolt is in the locking position:
• the buffer spaces the throw bolt apart from a surface to which the bolt keeper is attached;
• and
• the deflectable tongue bears on the throw bolt and biases it against the buffer;
• wherein the bolt keeper is an assembly of a bracket and a sheath,
• the sheath comprising a tubular body having a plurality of side walls surrounding a cavity, configured to receive the throw bolt through an open end of the cavity and enclose a received portion of the throw bolt, the bracket and the sheath configured such that the bracket holds the sheath disposed to receive the throw bolt;
• and
• the buffer comprising a first side wall of the sheath,
• wherein the deflectable tongue depends from a second side wall of the sheath, the second side wall opposing the first side wall, the deflectable tongue extending into the cavity at an angle so that a free end of the deflectable tongue faces away from the open end of the cavity.