초록 ▼

A door is locked in the closed position by a system of five bolts which can be simultaneously operated from either side of the door by a handle or key operator. Both the handle and key operator are common to all of the bolts in the system and are connected through a rotary camming device with a link

A door is locked in the closed position by a system of five bolts which can be simultaneously operated from either side of the door by a handle or key operator. Both the handle and key operator are common to all of the bolts in the system and are connected through a rotary camming device with a linkage including parts drivingly connected with the bolts. A lost motion connection is provided between the key operator and rotary camming device to enable complete rotation and withdrawal of the key. The linkage and bolts are protectively enclosed inside of tough conduits and linkage access housings. A safety bolt immobilizing device is provided on the door adjacent to one bolt of the locking system to block the extension of the bolts while the door is open and this device moves automatically to a bolt release position when the door is closed. The locking system can be placed in a residential door or may be installed on a commercial door.

대표청구항 ▼

In a security door having a plurality of locking bolts adapted to be extended beyond edges of the door into keeper openings of a door frame and to be retracted to non-locking positions, a drive linkage for the bolt on the door operable to extend and retract all of the bolts in unison, and an operati

In a security door having a plurality of locking bolts adapted to be extended beyond edges of the door into keeper openings of a door frame and to be retracted to non-locking positions, a drive linkage for the bolt on the door operable to extend and retract all of the bolts in unison, and an operating assembly for the drive linkage, said assembly comprising a support plate fixed to the door and having an annular portion, a rotational spindle assembly bodily supported on the annular portion for rotation around the annular portion, a camming element secured to the spindle assembly to turn therewith and having connections with parts of said linkage to operate the same during rotation of the camming element to operate said bolts, a rotational handle fixed to the spindle assembly adjacent to one side of the door and operable to rotate the spindle assembly in opposite directions sufficiently to move said bolts to and from their extended locking and retracted positions, a key operator fixed on the other side of the door and having a turnable cylinder and projecting tab substantially coaxial with the spindle assembly, a rotational element journaled on the spindle assembly coaxially and being drivingly coupled to said tab, and means forming a rotational lost motion connection between said rotational element coupled with the tab and said spindle assembly including a cross-slot in said rotational element, and a radial drive element carried by the spindle assembly extending into the cross-slot, whereby the cylinder and tab when turned by a key through 360°in either direction can cause lost motion rotation of said rotational element for 180°prior to imparting 180°rotation to the spindle assembly and camming element to operate said bolts.