Digital output lock

• US 9,121,196 B2
• Filed: 06/04/2009
• Issued: 09/01/2015
• Est. Priority Date: 10/19/2007
• Status: Active Grant

• Current Assignee: Schlage Lock Company (Allegion PLC)
• Original Assignee: Schlage Lock Company (Allegion PLC)
• Inventors: McDaid, Cornelius, Zuraski, Robert D., Paul Thambusami Joy Sachidanadam, John
• Primary Examiner(s): GALL, LLOYD A
• Application Number:
  US12/478,285
• Publication Number:
  US 20110016931A1
• Time in Patent Office: 2,280 Days
• Field of Search: 703/01, 703/02, 703/03.R, 703/03.A, 704/45, 704/46, 70 24- 26, 70330-332, 703/33.R, 703/33.A, 70432-437, 702/784, 702/785, 702/786, 702/787, 702/791, 702/77, 702/781, 702/82, 703/66, 340/5.55
• US Class Current: 1/1
• CPC Class Codes: E05B 37/10 in padlocks
• CPC Class Codes: Y10T 70/424 Sliding
• CPC Class Codes: Y10T 70/7051 Using a powered device [e.g., motor]
• CPC Class Codes: Y10T 70/7418 Dials

Abstract

A lock assembly comprising a lock body, a shackle, and a locking member configured to selectively lock the shackle relative to the lock body. At least one combination dial is rotatable between various combination positions. The at least one combination dial is associated with the locking member and is configured such that entry of a given series of combination positions causes the locking member to unlock the shackle relative to the lock body. A sensor is configured to sense the rotational position of the al least one combination dial. A display screen is associated with the sensor and is configured to display a position indicia which corresponds to the rotational position of the at least one combination dial.

Claims

1. A lock assembly comprising:

a lock body;

a shackle;

a locking member configured to selectively lock the shackle relative to the lock body;

at least one combination dial rotatable between various combination positions, the at least one combination dial associated with the locking member and configured such that entry of a given series of combination positions causes the locking member to unlock the shackle relative to the lock body;

a sensor configured to sense the rotational position of the at least one combination dial, wherein the sensor includes a contact assembly comprising (i) a contact bar that is configured to rotate along with the combination dial and includes a first contact positioned at one end of the contact bar and a second contact positioned at an opposite end of the contact bar, (ii) an inner set of radial contacts that remains stationary with respect to the combination dial and is radially aligned with the first contact of the contact bar, and (iii) an outer set of radial contacts surrounding the inner set of radial contacts that remains stationary with respect to the combination dial and is radially aligned with the second contact of the contact bar, wherein each combination of the inner contact and the outer contact that the first contact and second contact of the contact bar are in contact with, respectively, has a distinct resistance or capacitance value which with the rotational position of the combination dial is determined;

a display screen associated with the sensor and configured to display a position indicia which corresponds to the rotational position of the at least one combination dial; and

a mechanism to synchronize the sensor to the dial by resetting the sensor to a given position indicia, which corresponds to the rotational position of the at least one combination dial.

2. The lock assembly of claim 1 wherein the at least one combination dial includes a second position indicia.

3. The lock assembly of claim 2 wherein the position indicia and the second position indicia are synchronized to represent the same rotational position of the at least one combination dial.

4. The lock assembly of claim 3 wherein a user synchronizes the position of the at least one combination dial to the sensor.

5. The lock assembly of claim 1 wherein the at least one combination dial includes an engagement member associated with the sensor to facilitate sensing of the rotational position of the at least one combination dial.

6. The lock assembly of claim 5 wherein the sensor is a bi-directional location sensor and the engagement member is mechanically associated with the sensor.

7. The lock assembly of claim 5 wherein the sensor is a bi-directional location sensor.

8. The lock assembly of claim 5 wherein the engagement member has a single engagement orientation relative to the sensor such that the at least one combination dial is synchronized relative to the sensor.

9. The lock assembly of claim 1 wherein the display screen is part of a digital display assembly which is secured relative to an outer face of the lock body.

10. The lock assembly of claim 9 wherein the digital display assembly is mounted within the lock body and the display screen is aligned with a display opening through the outer face of the lock body.

11. The lock assembly of claim 9 wherein the digital display assembly is secured within a recess defined along the outer face of the lock body.

12. The lock assembly of claim 9 wherein the sensor is battery powered and the battery is supported within the digital display assembly and associated with the sensor.

13. The lock assembly of claim 1 wherein the sensor is battery powered and the battery is supported within the lock body and associated with the sensor.

14. The lock assembly of claim 1 wherein the locking member is mechanically actuated.

15. The lock assembly of claim 1 wherein the locking member is electrically or electromechanically operated.

16. The lock assembly of claim 1 wherein the at least one combination dial is free of position indicia.

17. The lock assembly of claim 1 wherein the at least one combination dial is supported within the lock body with only a portion of the at least one combination dial extending through a slot in the lock body.

18. The lock assembly of claim 17 wherein the lock body includes a notch such that a second position indicia on the at least one combination dial is visible in the notch.

19. The lock assembly of claim 1 wherein the lock assembly is a padlock.

20. The lock assembly of claim 1 wherein the lock assembly is a U-lock.

21. The lock assembly of claim 1 wherein the lock assembly is a cable lock.

22. The lock assembly of claim 1 wherein the display screen is removably mounted to the lock body.

23. The lock assembly of claim 1 wherein the mechanism to synchronize the sensor to the dial is a contact switch that is activated to reset the display to a pre-determined indicia.