Patent ID: 7036854

Claim:
A flush bolt mechanism for latching the inactive door of a pair of doors by projecting a bolt from the horizontal edge of said door into a strike plate located either in the door frame at the top or in the sill at the floor; the said mechanism mounted generally flush with the vertical edge of the said door, comprising: (a) a housing, (b) a front base which guides a cylindrical bolt as it is projected out or retracted back into the housing, (c) a trigger which is mounted pivotally onto the said housing by a pin, and can manually be moved perpendicularly to the said housing for activating a shaft which then moves vertically to project the cylindrical bolt into a strike plate, (d) two base plates, fastened underneath the trigger to the housing, for supporting the trigger when the bolt mechanism is in either a projected or a retracted position, (e) the shaft is attached at its upper end to the bolt, and at its lower end is connected pivotally with the trigger by a pin, (f) a spring clip for biasing the shaft towards the inactive door, but with sufficient pulling force exerted on the trigger can overcome the biasing force, allowing the shaft to move vertically projecting the bolt, (g) the strike plate is to be engaged with the bolt for latching an inactive door, (h) a cylindrical spacer, and (i) the housing features two channels located on the interior walls of the housing for positioning the two base plates, and for fastening the seat which in turn fastens the spring clip.