System for obstructing movement of lock pins
First Claim
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1. A system for obstructing movement of a pin in a pin tumbler lock, comprising:
- an elongated pin movable in a bore in a plug of a pin tumbler lock, the pin having a channel formed thereon and configured to receive a portion of a sidebar of the lock, the channel being elongated in a longitudinal direction of the pin; and
a blocking member mounted on the pin and configured to obstruct movement of the portion of the sidebar along the channel of the pin;
wherein the blocking member comprises a protrusion of the surface of the pin into the channel of the pin.
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Abstract
A system for obstructing movement of a pin in a pin tumbler lock is disclosed. The system includes a pin movable in a bore in a plug of a pin tumbler lock, and the pin has a channel formed thereon for receiving a portion of a sidebar of the lock. The system further includes a blocking member mounted on the pin and configured to obstruct movement of the portion of the sidebar along the channel of the pin.
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Citations
22 Claims
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1. A system for obstructing movement of a pin in a pin tumbler lock, comprising:
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an elongated pin movable in a bore in a plug of a pin tumbler lock, the pin having a channel formed thereon and configured to receive a portion of a sidebar of the lock, the channel being elongated in a longitudinal direction of the pin; and a blocking member mounted on the pin and configured to obstruct movement of the portion of the sidebar along the channel of the pin; wherein the blocking member comprises a protrusion of the surface of the pin into the channel of the pin. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A pin tumbler lock comprising:
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a shell; a plug rotatably positioned in the shell, the plug defining a keyway and at least one bore positioned along and extending away from the keyway; and a sidebar mounted on the plug, the sidebar engaging the shell to prevent rotation of the plug in the shell and being movable into the plug to permit the plug to be rotated in the shell; a bottom pin positioned in the bore and being slidable with respect to the bore, the bottom pin having a contact surface oriented toward the keyway for contacting a key inserted into the keyway, the bottom pin having a channel formed thereon for receiving a portion of the sidebar to permit movement of the sidebar out of engagement with the shell to permit rotation of the plug in the shell; and means on the bottom pin for obstructing movement of the pin along the bore when a portion of the sidebar is extended into the channel of the pin prior to insertion of a key into the keyway to raise the pin in the bore; wherein the channel is defined by sides extending in a longitudinal direction of the pin, and the means for obstructing movement is positioned between the sides of the channel. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. In a pin tumbler lock having a shell, a plug rotatably positioned in the shell, and a sidebar mounted on the plug, the sidebar engaging the shell to prevent rotation of the plug in the shell and being movable into the plug to permit the plug to be rotated in the shell, the plug defining a keyway and at least one bore positioned along and extending away from the keyway, the lock including a bottom pin positioned in the bore and being slidable with respect to the bore, the bottom pin having a contact surface oriented toward the keyway for contacting a key inserted into the keyway, the bottom pin having a channel formed thereon for receiving a portion of the sidebar to permit movement of the sidebar out of engagement with the shell to permit rotation of the plug in the shell, comprising:
a blocking member configured to at least partially block free longitudinal movement of the bottom pin along the bore when a portion of the sidebar is extended into the channel of the pin prior to insertion of a key into the keyway to raise the pin in the bore, the blocking member being located on the pin and extending into the channel to occupy at least a portion of the channel. - View Dependent Claims (17, 18, 19, 20, 21, 22)
Specification