Clyde T Roberson

US Patent:

7797973, Sep 21, 2010

Filed:

Mar 12, 2008

Appl. No.:

12/046756

Inventors:

Peter H. Field - Salem VA, US
David P. Sutherland - Roanoke VA, US
Clyde T. Roberson - Salem VA, US

Assignee:

Medeco Security Locks, Inc. - Salem VA

International Classification:

E05B 27/04
E05B 27/08

US Classification:

70337, 70491, 70494, 70495, 70496

Abstract:

A hierarchical lock system includes a first cylinder lock having a cylindrical plug, rotatable, reciprocating tumbler pins, a slider disposed within the plug and a side bar that cooperates with the cylinder plug, the slider, and the tumbler pins to control rotation of the lock. A second cylindrical lock includes a cylindrical plug, reciprocating tumbler pins, a slider, and a side bar that cooperates with the cylindrical plug and the slider. A first key is configured to open both the first and second locks by elevating and rotating the tumbler pins, and moving the slider to an unlocked position with respect to the side bar. A second key is able to open only the second cylindrical locks by elevating but not rotating the tumbler pins and by moving the slider to an unlocked position with respect to the side bar.

US Patent:

8186194, May 29, 2012

Filed:

Mar 27, 2009

Appl. No.:

12/413139

Inventors:

Peter H. Field - Salem VA, US
David P. Sutherland - Roanoke VA, US
Glenn Hartman - Salem VA, US
Mark Benzie - Roanoke VA, US
Walt Dannhardt - Roanoke VA, US
Kevin Galliher - Roanoke VA, US
Dan Boadwine - Salem VA, US
Clyde T. Roberson - Salem VA, US

Assignee:

Medeco Security Locks, Inc. - Salem VA

International Classification:

E05B 27/00
E05B 29/00

US Classification:

70491, 70409, 70421, 70419, 70496, 70493, 70495

Abstract:

A tumbler pin lock includes an auxiliary locking mechanism including an auxiliary locking pin to provide enhance locking in addition to the locking provided by the tumbler pins so that the lock remains locked even if the tumblers are picked or bumped into their unlocked positions.

US Patent:

20030024287, Feb 6, 2003

Filed:

Oct 1, 2002

Appl. No.:

10/260420

Inventors:

Peter Field - Salem VA, US
Andy Perkins - Lafayette VA, US
Anthony Hicks - Roanoke VA, US
Mark Benzie - Roanoke VA, US
Glenn Hartman - Salem VA, US
Clyde Roberson - Salem VA, US
Thomas Duckwall - Roanoke VA, US
Kevin Lee - Salem VA, US
W. Boadwine - Salem VA, US

International Classification:

E05B019/06

US Classification:

070/409000

Abstract:

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.

US Patent:

20140190223, Jul 10, 2014

Filed:

Jan 3, 2014

Appl. No.:

14/146918

Inventors:

- SALEM VA, US
Clyde T. ROBERSON - Salem VA, US
Dan BOADWINE - Salem VA, US

Assignee:

MEDECO SECUIRTY LOCKS, INC. - SALEM VA

International Classification:

E05B 19/00

US Classification:

70493

Abstract:

A key with one or more movable elements that slide within the blade of a substantially flat key for operating a lock includes a blade configured to be inserted into a keyway of a lock and including contour features formed on an outer surface of the blade that mate with corresponding contour features of the keyway. The key includes at least one movable element disposed within a recess formed in the blade and including a contour surface exposed to the exterior of the key blade. The contour surface may include external contour features that correspond in shape to at least a portion of the contour features of the keyway. The movable element may be movable within the recess, when it engages a blocking member within the keyway, and after such movement, the element will engage a locking element within the lock.