Electronic lock with energy conservation features

US4896246A · kind A · utility

Assignee

• Supra Products, Inc. · US

Inventors

• Walter G. Henderson · Salem, US
• John Q. Archer, II · Salem, US
• Gerald R. Daum · Salem, US
• George A. Ellson · Salem, US
• John Gray · Parramatta, AU
• Wayne F. Larson · Salem, US
• Rockne M. Olds · Salem, US
• Jerry P. Scansen · Salem, US
• John W. Sherman · Houston, US
• Edgar J. Unrein · Steilacoom, US

Key dates

• Filing date: May 2, 1989
• Grant date: Jan 23, 1990
• Expiry date: May 2, 2009

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C2209/08
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Battery power in an electronic lock system is conserved by delaying application of energy to the unlocking mechanism until a movable member, used to open the lock system, is moved.