Electronically monitored safety lockout devices, systems and methods

• US 9,600,696 B2
• Filed: 11/09/2011
• Issued: 03/21/2017
• Est. Priority Date: 11/09/2010
• Status: Active Grant

• Current Assignee: Master Lock Company LLC (Fortune Brands Innovations, Inc.)
• Original Assignee: Master Lock Company LLC (Fortune Brands Innovations, Inc.)
• Inventors: Ebner, Timothy
• Primary Examiner(s): Feild, Joseph
• Assistant Examiner(s): Mahase, Pameshanand
• Application Number:
  US13/884,282
• Publication Number:
  US 20140028443A1
• Time in Patent Office: 1,959 Days
• US Class Current: 1/1
• CPC Class Codes: E05B 2047/0058 by batteries
• CPC Class Codes: E05B 2047/0067 Monitoring
• CPC Class Codes: E05B 39/04 with counting or registering devices time recording locks G07C1/32
• CPC Class Codes: E05B 67/00 Padlocks permutation locks E05B37/00; Details thereof
• CPC Class Codes: E05B 67/383 Staples or the like for padlocks; Lock slings; Arrangements on locks to cooperate with padlocks
• CPC Class Codes: F16P 3/08 in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
• CPC Class Codes: G06K 7/10 by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
• CPC Class Codes: G06K 7/10366 the interrogation device being adapted for miscellaneous applications
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 9/00182 operated with unidirectional data transmission between data carrier and locks
• CPC Class Codes: G07C 9/00571 operated by interacting with a central unit
• CPC Class Codes: G07C 9/28 the pass enabling tracking or indicating presence
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication

Abstract

A system for monitoring a lockout condition of a component includes a lockout device, a lock unit, and a reader. The lockout device is moveable between a lockout condition blocking operation of the component and an access condition permitting operation of the component. The lock unit is configured to be secured to a lockout interface of the lockout device to secure the lockout device in the lockout condition. One of the lockout device and the lock unit includes a communication module configured to communicate a data signal including an identification code identifying the one of the lockout device and the lock unit. The reader is remote from the one of the lockout device and the lock unit, and is configured to receive the data signal at least when the lockout device is assembled with the component and the lock unit is secured to the lockout interface of the lockout device.

Claims

1. A system for monitoring a lockout condition of a component, the system comprising:

a padlock having a lock body and a shackle assembled with the lock body and manually moveable between a locked position secured with the lock body and an unlocked position separable from the lock body;

a lockout device configured to be assembled with the component and manually moveable between a lockout condition blocking operation of the component and an access condition permitting operation of the component, the lockout device including a housing defining a lock aperture sized to receive the padlock shackle therethrough, such that the padlock shackle secures the lockout device in the lockout condition, with the padlock being secured to the lockout device when the shackle is in the locked position;

wherein the lockout device comprises a communication module disposed in the housing and configured to communicate a data signal including an identification code identifying the lockout device, and a sensor switch disposed in the housing and configured to be actuated when the padlock shackle is inserted through the lock aperture, to activate the communication module; and

a reader separate from the lockout device, the reader being configured to receive the data signal when the reader is placed in proximity with the communication module, at least when the lockout device is in the lockout condition and the padlock shackle is inserted through the lock aperture of the lockout device and manually moved to the locked position.

2. The system of claim 1, wherein the communication module comprises an RFID tag and the reader comprises an RFID tag reader.

3. The system of claim 1, wherein the padlock includes a communication module configured to communicate a data signal including an identification code identifying the padlock.

4. The system of claim 1, wherein the lockout device is configured to activate the communication module to communicate the data signal when the lockout device is in the lockout condition.

5. The system of claim 1, wherein the lockout device is configured to activate the communication module to communicate the data signal at least when the padlock shackle is inserted through the lock aperture.

6. The system of claim 1, wherein the reader is disposed in the padlock.

7. The system of claim 1, wherein the reader is configured to be assembled with the component.

8. The system of claim 1, wherein the reader is assembled with a safety placard for assembly with the component.

9. The system of claim 1, further comprising a central computer in communication with the reader, the central computer being programmed to store information regarding usage of the lockout device.

10. A method of monitoring lockout procedures for a multi-process arrangement having first and second components, the method comprising:

inserting a first shackle of a first padlock through a first lock aperture of a first lockout device and manually moving the first shackle to a locked position with a lock body of the first padlock to secure the first padlock to the first lockout device with the first component in a lockout condition to block operation of the first component;

actuating a first sensor switch in the first lockout device in response to insertion of the first shackle through the first lock aperture;

generating a first data signal in response to actuation of the first sensor switch, the first data signal including at least a first identification code corresponding to the first lockout device;

inserting a second shackle of a second padlock through a second lock aperture of a second lockout device, separate from the first lockout device, and manually moving the second shackle to a locked position with a lock body of the second padlock to secure the second padlock to the second lockout device with the second component in a lockout condition to block operation of the second component;

actuating a second sensor switch in the second lockout device in response to insertion of the second shackle through the second lock aperture;

generating a second data signal in response to actuation of the second sensor switch, the second data signal including at least a second identification code corresponding to the second lockout device;

monitoring the first and second data signals to determine an order in which the first and second lockout devices have been locked out; and

comparing the order in which the first and second lockout devices have been locked out with a predefined lockout procedure, and providing an alert if the order is inconsistent with the predefined lockout procedure.

11. The method of claim 10, further comprising delivering information corresponding to the first and second data signals from the receiver to a central computer.

12. The method of claim 10, wherein the first and second data signals further include a condition code identifying a lockout condition of the first and second lockout devices.

13. The method of claim 10, wherein the first and second data signals are generated by the first and second lockout devices.

14. The method of claim 10, wherein the first and second data signals are generated by the first and second padlocks.

15. The method of claim 10, wherein the first and second data signals are generated when the first and second padlock shackles are moved to the locked position.

16. The method of claim 10, wherein the first and second data signals are generated when the first and second padlock shackles are inserted through the first and second lock apertures.

17. The method of claim 10, wherein the first and second data signals are generated when the first and second lockout devices are moved to the lockout condition.

18. The method of claim 10, wherein the first and second data signals are generated by first and second RFID tags.

19. The method of claim 10, further comprising receiving the first and second data signals at a receiver proximate to the first and second components.

20. The method of claim 10, further comprising delivering information corresponding to the first and second data signals to a central computer.

21. The method of claim 10, further comprising receiving the first data signal at a first receiver proximate the first component and receiving the second data signal at a second receiver proximate the second component.

22. The method of claim 10, further comprising identifying system users that locked out the first and second components based on the first and second identification codes.

23. A method of monitoring lockout procedures, the method comprising:

inserting a shackle of a padlock through a lock aperture of a lockout device and manually moving the shackle to a locked position with a lock body of the padlock to secure the padlock to the lockout device in a lockout condition;

actuating a sensor switch in the lockout device in response to insertion of the shackle through the lock aperture;

generating a data signal in response to actuation of the sensor switch, the data signal including an identification code corresponding to one of the padlock and the lockout device.

24. A lockout device configured to be assembled with a component and manually moveable between a lockout condition blocking operation of the component and an access condition permitting operation of the component, the lockout device comprising:

a housing;

a lock aperture defined by the housing and sized to receive a padlock shackle therethrough, such that the padlock shackle secures the lockout device in the lockout condition;

a communication module disposed in the housing and configured to communicate a data signal including an identification code identifying the lockout device; and

a sensor switch disposed in the housing and configured to be actuated when the padlock shackle is inserted through the lock aperture, to activate the communication module.