Operating a lock cylinder with multiple, supplemental locking elements

US11280111B2 · kind B2 · utility

Assignee

• ASSA ABLOY HIGH SECURITY GROUP INC. · US

Inventors

• Mark Benzie · Roanoke, US
• Douglas E. Trent · Roanoke, US
• Samuel D. Wood · Greensboro, US
• Peter H. Field · Salem, US
• Walter Dannhardt · Roanoke, US
• Thomas Duckwall · Roanoke, US

Key dates

• Filing date: Jun 17, 2021
• Grant date: Mar 22, 2022
• Expiry date: Jun 17, 2041

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E05Y2201/47
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

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.