ANTI-THEFT DEVICE FOR AN ACCESS DOOR

• US 20110187156A1
• Filed: 02/02/2010
• Published: 08/04/2011
• Est. Priority Date: 02/02/2010
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Dobish, John M., Traister, Glenn L., Trush, David M., Granny, Robert D., Buckley, Ian S., Spence, Graham J., Nelson, Grant W.
• Granted Patent: US 8,925,361 B2
• Time in Patent Office: Days
• US Class Current: 296/202
• CPC Class Codes: E05B 17/2092 Means responsive to tampering or attack providing additional locking for safes E05B65/0082
• CPC Class Codes: E05B 77/44 Burglar prevention, e.g. protecting against opening by unauthorised tools E05B77/28 takes precedence
• CPC Class Codes: E05B 79/12 using connecting rods
• CPC Class Codes: E05B 85/06 Lock cylinder arrangements
• CPC Class Codes: Y10T 292/57 Operators with knobs or handles
• CPC Class Codes: Y10T 70/5155 Door
• CPC Class Codes: Y10T 70/5761 Retractable or flush handle
• CPC Class Codes: Y10T 70/7706 Operating connections
• CPC Class Codes: Y10T 70/7921 Armoring
• CPC Class Codes: Y10T 70/8541 Mounting arrangements

Abstract

A door having a latch mechanism is provided. The door also includes a bracket, and a pawl having a first aperture. The pawl is rotatably attached to the bracket and is operatively connected to the latch. The door additionally includes a key-cylinder adapted to selectively lock and unlock the latch by rotating the pawl, and a shield having a second aperture. Furthermore, the door includes a component connected to the key-cylinder. The component is aligned with and extends through the first and second apertures without contact with the pawl or with the shield, and is configured to not impede the rotation of the pawl by the key-cylinder when the component is aligned with the first and second apertures. The component is also configured to detach the pawl from the bracket and limit the key-cylinder extraction, when the key-cylinder is forcibly manipulated thereby causing the component to contact the shield.

Claims

1. A door for closure of an entryway, the door comprising:

an exterior-facing surface;

an inner structure;

a latch mechanism connected to the inner structure, configured to be fastened, such that the door maintains closure of the entryway, and capable of being released, such that the door opens the entryway;

a bracket connected to the inner structure;

a pawl having a first aperture, the pawl rotatably attached to the bracket and operatively connected to the latch mechanism;

a key-cylinder accessible from the exterior-facing surface, the key-cylinder adapted to selectively lock and unlock the latch mechanism by rotating the pawl;

a shield having a second aperture, and connected to the inner structure, such that the inner structure is disposed between the shield and the key-cylinder; and

a component connected to the key-cylinder and aligned with and extending through the first and second apertures without contact with the pawl or with the shield;

wherein the component is configured to not impede the rotation of the pawl by the key-cylinder when the component is aligned with the first and second apertures, and configured to provide a detachment of the pawl from the bracket and limit an extraction of the key-cylinder from the door, when the key-cylinder is forcibly manipulated thereby causing the component to contact the shield.

2. The door of claim 1, wherein the component is a metal fastener having a cap, and the fastener is threaded into the key-cylinder.

3. The door of claim 2, wherein the cap hooks on to the shield and limits the extraction of the key-cylinder when the key-cylinder is forcibly manipulated.

4. The door of claim 1, wherein the shield is formed from a plastic material.

5. The door of claim 4, wherein the second aperture is defined by a metal washer connected to the shield.

6. The door of claim 1, further comprising a rod, and the pawl is connected to the latch mechanism via the rod.

7. The door of claim 1, wherein the detachment of the pawl from the bracket prevents unlocking of the latch mechanism.

8. The door of claim 1, further comprising a door handle, wherein the door handle is attached to the bracket, and the key-cylinder is housed in the door handle.

9. The door of claim 1, wherein the key-cylinder is configured to be activated by a key.

10. A vehicle comprising:

an entryway;

a door for the entryway, the door having;

an exterior-facing surface;

an inner structure;

a latch mechanism connected to the inner structure, configured to be fastened, such that the door maintains closure of the entryway, and capable of being released, such that the door opens the entryway;

a bracket connected to the inner structure;

a pawl having a first aperture, the pawl rotatably attached to the bracket and operatively connected to the latch mechanism;

a key-cylinder accessible from the exterior-facing surface, the key-cylinder adapted to selectively lock and unlock the latch mechanism by rotating the pawl;

a shield having a second aperture, and connected to the inner structure, such that the inner structure is disposed between the shield and the key-cylinder; and

a component connected to the key-cylinder and aligned with and extending through the first and second apertures without contact with the pawl or with the shield;

wherein the component is configured to not impede the rotation of the pawl by the key-cylinder when the component is aligned with the first and second apertures, and configured to provide a detachment of the pawl from the bracket and limit an extraction of the key-cylinder from the door, when the key-cylinder is forcibly manipulated thereby causing the component to contact the shield.

11. The vehicle of claim 10, wherein the component is a metal fastener having a cap, and the fastener is threaded into the key-cylinder.

12. The vehicle of claim 11, wherein the cap hooks on to the shield and limits the extraction of the key-cylinder when the key-cylinder is forcibly manipulated.

13. The vehicle of claim 10, wherein the shield is formed from a plastic material.

14. The vehicle of claim 13, wherein the second aperture is defined by a metal washer connected to the shield.

15. The vehicle of claim 10, further comprising a rod, and the pawl is connected to the latch mechanism via the rod.

16. The vehicle of claim 10, wherein the detachment of the pawl from the bracket prevents unlocking of the latch mechanism.

17. The vehicle of claim 10, further comprising a door handle, wherein the door handle is attached to the bracket, and the key-cylinder is housed in the door handle.

18. The vehicle of claim 10, wherein the key-cylinder is configured to be activated by a key.