Schlage Lock Company LLC

Evan Earl Evans

Jason Curtis Clifford

Brian Edward Walls

Ravindra Kumar Pandey

James D Ohl

Ajeya S Rao

Lohithaswa Thimmappa

Vinod Kumar Rajan

Aravinda Mahabaleshwara

Roger Kanaan

An exemplary locking cartridge includes a generally cylindrical housing, first and second plates, and a sliding member. The plates are rotatable with respect to the housing, and at least one of the plates is movable in the axial direction of the housing. The housing and the movable plate include cam surfaces that interact to cause the movable plate to move toward the other plate when the movable plate is rotated. The sliding member is slidingly coupled to one of the plates and operable in a blocked state in which the sliding member resists axial motion of the movable plate, and an unblocked state in which the sliding member does not resist axial motion of the movable plate.

Lock plug including modular cartridges

A retention mechanism for retaining a lock cylinder in a lock housing. The retention mechanism includes a control lug, a control pin, and a finger pin. A portion of the control lug is configured to be positioned in a retention recess of the lock housing when the control lug is in an engagement position to prevent the removal of the lock cylinder from the lock housing. With the control lug in the engaged position, at least a portion of the control pin may be biased into a chamber of the control lug to retain the control lug at the engaged position. When the control lug is to be displaced from the engaged position, the finger pin may be lifted to an activation position, such as by a sidebit of a key, wherein the finger pin may removably displace the control pin from at least a portion of the chamber.

Sidebit operated interchangeable core control lug

A plug assembly for a lock includes a generally cylindrical plug body that defines a keyway and a generally cylindrical plug housing that rotatably receives the plug body. A plurality of blocking members are housed in the plug body and are movable into the keyway upon rotation of the plug body relative to the plug housing to obstruct the keyway. A key can be provided that is positionable into the keyway, and the blade of the key defines receptacles for receiving the blocking members when the plug body is rotated so that the lock can be unlocked. However, the blocking members prevent rotation of the plug body when a picking tool or unauthorized key is inserted in the keyway since either the blocking members cannot move into the keyway and remain engaged to the plug housing due to the object in the keyway, or obstruct the keyway and prevent insertion of the picking tool.

Key and lock cylinder

A locking cartridge including a housing, first and second plates rotatably mounted in the housing, a blocking member, and a movable member. The cartridge also includes a cam interface which urges the first plate toward the second plate when the plates are rotated. The blocking member is configured to move among a blocking position and an unblocking position in response to engagement with a first cut on a key. When in the blocking position, the blocking member blocks the first plate from moving toward the second plate. With the second plate blocked from moving toward the first plate, the cam interface prevents rotation of the first plate. The movable member is configured to move among a first position and a second position in response to engagement with a second cut on the key. In certain embodiments, the movable member may be a control pin or a second blocking member.

Locking cartridges

A method of manufacturing a lock assembly for enabling use of a key-in-knob lock cylinder assembly in different types of lock assemblies. The method includes providing a key-in-knob lock assembly having a key-in-knob housing and a plug rotatably engaged within the key-in-knob housing, providing an interchangeable core lock assembly having an interchangeable core housing, and inserting the key-in-knob housing into the interchangeable core housing such that the key-in-knob housing is universally exchangeable between the key-in-knob lock assembly and the interchangeable core lock assembly.

Lock assembly

A retainer clip is used for retaining a lock plug within a bore of a lock housing. The retainer clip includes a generally arcuate body disposeable about the plug outer surface and having a radial retention surface positionable generally against a housing end surface so as to prevent axial displacement of the plug along the bore. Two projections are each disposed proximal to a separate end of the body, each projection being disposeable within a separate plug opening when the body is disposed on the plug to retain the clip engaged therewith. The clip body has a hinge, a first arm portion extending between the hinge and one free end and a second arm portion extending between the hinge and the other end. The hinge is configured so that the two arm portions are deflectable generally about the hinge to move with respect to each other during installation and removal.

Growing community of inventors

Colorado Springs, CO, United States of America

Evan Earl Evans