Electric strike

In a door lock of the character described wherein a remotely controlled strike tongue in an edge portion of the door frame has a part thereof providing a keeper for an outwardly biased bolt projecting from an edge of the door, wherein said strike tongue is a rigid member located in a cavity in a housing that is secured in said portion of the door frame and is mounted therein for rotation about an axis parallel to said portion of the door frame to and from an operative position to which it is yieldingly biased and in which the part thereof that forms the keeper is engaged with the bolt to hold the door closed, said rigid member and a wall of said housing cavity in which it is located having contiguous surfaces transverse to said axis, that slide across one another during rotation of the rigid member, so that projection across the interface between said contiguous surfaces of a stop member mounted in the housing, into a socket in the rigid member that opens to its respective one of said contiguous surfaces while the rigid member is in its operative position, locks a closed door against unauthorized opening, the improvement which comprises:

• A. the housing having
• 1. a passage leading from its said cavity to a mouth that opens to the interface between said contiguous surfaces at a point in line with said socket in the strike tongue when the latter is in its operative position, and
• 2.