Releasable mount for window grilles

A releasable mount for mounting a window grille over a window, the mount comprising:

• a fixed housing having a base end adapted for rigid attachment to a wall adjacent to the window, and an open end directed outwardly away from the wall,
• a latch member mounted inside the fixed housing, the latch member having an opening therethrough,
• a latch pin adapted to be rigidly connected to the window grille, and adapted to be received through the open end of the fixed housing and the opening in the latch member, to a latched position, the grille being in the desired mounted position over the window when the latch pin is in the latched position,
• a latch pin housing connected to the latch pin, said housing being adapted to overlap with the open end of the fixed housing when the latch pin is in the latched position for substantially sealing the fixed housing,
• a pair of catch members mounted in a cavity that extends through the latch pin, the catch members being adapted for pivoting movement between a retracted position in which the catch members are contained substantially in the latch pin cavity so that the latch pin may be inserted and withdrawn from the fixed housing through the latch member opeing, and an expanded position, when the latch pin is in the latched position, in which expanded position the catch members extend from opposite sides of the latch pin, in position to catch on the latch member so that the latch pin may not be withdrawn from the latched position,
• a trigger pin mounted in the fixed housing with one end extending between the base end of the fixed housing and the latch member, the trigger pin being adapted for movement between a cocked position, and a release position relatively further away from the latch member, and being biased by a biasing means in the cocked position, the trigger pin, when in the cocked position, being adapted to contact the catch members mounted on the latch pin when the latch pin is inserted into the fixed housing to the latched position, said contact causing the catch members to expand to the expanded position, and, the trigger pin, when in the release position, being adapted to enable the catch members to retract to the retracted position so that the latch pin may be withdrawn from the fixed housing, and
• remote actuating means connected to the trigger pin for enabling a person inside the building to move the trigger pin from the cocked position to the release position, thereby enabling the latch pin to be withdrawn from the latched position.