Assa Abloy High Security Group Inc.

Medeco Security Locks, Inc.

White Consolidated Industries, Inc.

Thomas Edwin Duckwall

Peter H Field

Douglas E Trent

Mark Benzie

Walter Dannhardt

Samuel D Wood

Clyde T Roberson

Glenn K Hartman

Bradley B Hobday

W Daniel Boadwine

Andy E Perkins

Anthony Hicks

Kevin Lee

Glenn Hartman

A lock assembly includes a plug with a keyway, primary pins aligned with the keyway for controlling rotation of the plug, a sidebar for controlling rotation of the plug, secondary pins adjacent the keyway for controlling movement of the sidebar, and at least one supplemental sidebar control element for controlling movement of the sidebar. The lock assembly is operated by simultaneously manipulating the primary pins, the secondary pins, and the supplemental sidebar control element to place each in a respective position and/or orientation to permit rotation of the plug and to permit sufficient movement of the sidebar to permit rotation of the plug and then applying torque to the plug.

Cylinder lock with multiple, supplemental locking elements and associated key

A key or key blank includes a key blade having a first edge, a second edge, and first and second opposed sides. The first edge has one or more edge bittings to elevate and/or rotate one or more tumbler pins of a lock with a vertically-oriented keyway, and one of the opposed sides has one or more side bittings to elevate and/or rotate one or more tumbler pins of a lock with a horizontally-oriented keyway. Side warding surfaces on the key blank are shaped and positioned to minimize the interference of peaks between the skewed bitting cuts on the key. A lock has a keyway configured for the key having edge bittings to elevate and/or rotate one or more tumbler pins of a vertical lock and side bittings to elevate and/or rotate one or more tumbler pins of a horizontal lock.

Key and key blanks operable in vertically and horizontally oriented keyways

A lock assembly includes a plug with a keyway, primary pins aligned with the keyway, a sidebar, secondary pins adjacent the keyway, and at least one supplemental sidebar control element for controlling movement of the sidebar. A key blank has a key blade with a primary top edge to receive primary bittings for controlling the primary pins, a rib to receive secondary bittings for controlling the secondary pins, and at least one shuttle pin. The shuttle pin engages a multi-level ridge within the keyway to move the shuttle pin from a retracted position to an extended position in which an end of the shuttle pin actuates the supplemental sidebar control element.

Lock cylinder and key with multiple, supplemental locking elements

Operating a lock cylinder with multiple, supplemental locking elements

A key blank, key and master keying system for a twisting tumbler sidebar lock of the type where the sidebar is blocked or unblocked by a selectively positioned longitudinally extending slider, has a key blank with a slider contacting surface on a rib on the blank below the bitting area at one of a plurality of selected predetermined locations. A key with skew cut bittings can be cut on the blank and the blank can be configured with the slider contacting surface at different predetermined locations. The slider contact area on the rib of the key blank can be divided into two horizontal portions at different predetermined locations and the slider itself can have contact surfaces also positioned at different predetermined locations so that a number of different master keying variations are possible.

Key blank, key and master keying system

A cylindrical 'shell and plug' assembly has the plug rotatably received within the shell. The plug has a central rear shaft and an engagement portion thereon. The engagement portion has a pie-shaped stop member and a pie-shaped engagement member. A connecting member rotatably held within the shell has an inner engagement that can engage the pie-shaped engagement member and an operation key slot capable of receiving an end of an operation key. The plug can be rotated until the engagement member is positioned behind the flange to retain the plug with the connecting member, and the plus can be rotated so that the engagement member can be positioned away from the flange, thereby permitting the plug to become disengaged from the connecting member.

Removable core lock

A washer having a tub supported by a front frame, a pair of front supports and a rear frame. The tub defines a wash chamber with a front opening. The front frame has a pair of vertical members respectively disposed adjacent to the opposing side walls of the tub toward the front opening. The front supports each have a nose extending forward from a neck. The necks are respectively secured to lower ends of the vertical members. A door is pivotally secured to the noses of the front supports. A door hinge support is secured between the noses of the front supports so as to secure the front supports from lateral movement.

Support-door hinge

Growing community of inventors

Roanoke, VA, United States of America

Thomas Edwin Duckwall