초록 ▼

A lock cylinder housing assembly is received in a through bore of a door and coupled therein without the use of external or internal machine screws. A coacting dead bolt assembly in a bore formed in the door at right angles to the through bore bridges the through bore and extends through a transvers

A lock cylinder housing assembly is received in a through bore of a door and coupled therein without the use of external or internal machine screws. A coacting dead bolt assembly in a bore formed in the door at right angles to the through bore bridges the through bore and extends through a transverse passage of the housing assembly to prevent rotation of the assembly or disassembling thereof from the exterior or interior of the door. A catch release mechanism on the dead bolt assembly is accessible only when the door is open to allow releasing of the catch means which allows removal and disassembly of the housing assembly at the inner side of the door.

대표청구항 ▼

A door lock mechanism comprising a lock cylinder housing assembly adapted for mounting in a through bore of a door and including exterior and interior housing sections, means coupling said housing sections in assembled relationship within the confines of the through bore, whereby the coupling means

A door lock mechanism comprising a lock cylinder housing assembly adapted for mounting in a through bore of a door and including exterior and interior housing sections, means coupling said housing sections in assembled relationship within the confines of the through bore, whereby the coupling means is inaccessible from the exterior and interior sides of the door, a lock bolt assembly mountable within an edge opening of the door in intersecting relation with said through bore, said lock bolt assembly extending across the through bore and interfitting with the lock cylinder assembly within the through bore to resist rotation of the lock cylinder assembly, interengaging catch means on said lock cylinder assembly and lock bolt assembly normally preventing separation of the coupling means, and movable catch releasing means on the lock bolt assembly accessible and operable from the edge of a door carrying said assemblies when such door is open to expose said edge, said coupling means being screw-threaded and rotational, and said interengaging catch means comprising a toothed catch element on the interior housing section, and a coacting normally active shiftable toothed latch element on said door bolt assembly adapted to be de-activated by said movable catch releasing means, said movable catch releasing means comprising a manually operable plunger on the lock bolt assembly having an interior end portion engageable with a release member having a connection with said toothed latch element, and said release member comprising a pivoted release lever on the lock bolt assembly having a part engaging said toothed latch element to withdraw the latter from the toothed catch element, and a spring means on the lock bolt assembly engaging the toothed latch element and urging it toward interlocking engagement with said catch element.