Lock bypass detection

Patent metadata

Field	Value
Publication number	US-10030416-B1
Application number	US-201715685934-A
Country	US
Kind code	B1
Filing date	Aug 24, 2017
Priority date	Jan 25, 2017
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A lock system and method for alerting a user or other entity that a lock has been or is being tampered with is disclosed. The lock includes at least one enhanced security pin that is electrically isolated from the rest of the lock. When the lock picker attempts to pick the lock a portion of the enhanced security pin contacts either the plug or the outer casing of the lock to complete a circuit with an alert component. The completion of the circuit causes the alert component to generate an alert signal that can be observed by the user or other entity.

First claim

What is claimed is:

1. A system comprising:
a lock, the lock comprising:
a plug, the plug having a keyway and a first plurality of shafts;
an outer casing, the outer casing having a plug hole disposed in a center portion of the outer casing, the plug hole shaped to accept the plug into the outer casing, the outer casing further including a second plurality of shafts;
a plurality of springs disposed within the second plurality of shafts, each of the second plurality of shafts having a single spring;
a plurality of driver pins connected to a corresponding one of the plurality of springs, wherein at least one of the plurality of driver pins is an enhanced security pin, the enhanced security pin having a top portion and a bottom portion comprised of a non-conductive material and a center portion comprised of an electrically conductive material wherein at least one of the plurality of driver pins is a security pin, and at least one the driver pins is a traditional driver pin and wherein the top portion and the bottom portion of the enhanced security pin are of equal size and the center portion of the enhanced security pin has a diameter smaller than the diameter of the top portion and the bottom portion;
a plurality of key pins connected to a corresponding one of the plurality of driver pins, wherein at least one of the plurality of the key pins is a magnetic key pin and at least one of the plurality of key pins is a non-magnetic key pin, wherein a spring associated with the magnetic key pin is a pull spring and a spring associated with the non-magnetic key pin is a push spring; and
a first wire disposed within the enhanced security pin;
a second wire disposed within the plug;
an alert component connected to the first wire and the second wire such that when the center portion contacts a portion of either the plug or the outer casing an electrical circuit is completed between the first wire, the second wire and the alert component causing the alert component to generate an alert signal, wherein the alert signal is generated when the lock has been tampered; and

a key to which the at least one magnetic key pin is attracted, wherein at least a portion of the key is made from a ferromagnetic material, and wherein the key includes a series of bitings.

Assignees

• IBM

Inventors

• Albertson Chad M
• Campbell Eric J
• Ollerich Nicholas J
• Steffen Christopher W

Classifications

• E05B45/08 Primary

  with contact making inside the lock or in the striking plate · CPC title

• E05B27/0017 Primary

  Tumblers or pins · CPC title

• E05B45/10

  by introducing the key {or another object} · CPC title

• E05B27/0057

  with increased picking resistance · CPC title