초록 ▼

A patio door lock having a linkage for reciprocating movable bolts in the top and bottom of the door into and out of locked positions. A six bar linkage is provided to reciprocate bolt rods connected to the bolts by axially directed forces. A tension spring biases the bolt rods together, and stops a

A patio door lock having a linkage for reciprocating movable bolts in the top and bottom of the door into and out of locked positions. A six bar linkage is provided to reciprocate bolt rods connected to the bolts by axially directed forces. A tension spring biases the bolt rods together, and stops are provided to limit an over-center motion of the linkage as assisted by the tension spring, one stop holding the linkage and bolt bars in the locked position.

대표청구항 ▼

A door lock for a movable door having a pair of vertically aligned movable bolts positioned one at the top and one at the bottom of the door for locking engagement with a pair of keepers mounted at the top and bottom of the door frame, and means for positioning said bolts including a pair of bolt ro

A door lock for a movable door having a pair of vertically aligned movable bolts positioned one at the top and one at the bottom of the door for locking engagement with a pair of keepers mounted at the top and bottom of the door frame, and means for positioning said bolts including a pair of bolt rods in substantial alignment along a vertical axis and connected one to each of the bolts at their outer ends and having their inner ends positioned at a distance from each other, a rotatable operator disposed in the space between said inner ends, a pair of bolt rod actuating links each pivotally fixed relative to the door and extending generally normal to the length of said bolt rods, each of said links being pivotally connected to one of said bolt rods at a connection lying in said vertical axis, and means interconnecting said rotatable operator and said links for movement of said links through a relatively short arc which is generally along said vertical axis to exert force axially of said bolt rods, said interconnecting means including an over-center link structure, spring means effective to urge said link structure over-center, and stop means for limiting movement of said link structure in either direction beyond said over-center position.