Padlock retaining device

1. A door locking and unlocking system comprising:

a) a roll-up door that can move to an open position from a closed position, the door being proximate to a structure separate from the door;

b) a locking mechanism including a bolt slidable relative to the door and structure for locking the door in the closed position, the locking mechanism being lockable with a padlock having a shackle, a first part of the locking mechanism being attached to the door and a second part of the locking mechanism being attached to the structure proximate the door; and

c) a padlock retaining device not part of the locking mechanism, the padlock retaining device comprising a body section secured to the structure and not secured to the door, the padlock retaining device comprising a lock containment section attached to and extending away from the body section, the lock containment section having a padlock shackle retaining hole for receiving the padlock shackle.

2. The system according to claim 1 , wherein the body section of the padlock retaining device is planar.

3. The system according to claim 1 , wherein the body section of the padlock retaining device comprises at least one fastener hole.

4. The system according to claim 1 , wherein the lock containment section extends away from the body section at a 90 degree angle with respect to the body section.

5. The system according to claim 1 , wherein the padlock retaining device is made from a single plate of steel.

6. The system according to claim 1 , wherein the body section of the padlock retaining device is 2 and ⅜ inches tall.

7. The system according to claim 1 , wherein the body section of the padlock retaining device is 1 and ⅞ inches wide.

8. The system of claim 1 , further comprising a padlock for locking the locking mechanism with the door in the closed position.

9. The system of claim 1 , wherein the body section of the padlock retaining device is in the shape of a body portion and shackle of a padlock.

10. A method for unlocking a roll-up door, the door being moveable relative to a structure proximate to the door from a closed position to an open position, the door having a locking mechanism including a bolt slidable relative to the door and structure and comprising a first part attached to the door and a second part attached to the structure proximate the door, a padlock locking the locking mechanism with the door in a closed position, the padlock having a shackle, and a padlock retaining device not part of the locking mechanism, the padlock retaining device comprising a body section not secured to the door and secured to the structure proximate to the door, the padlock retaining device comprising a lock containment section attached to and extending away from the body section, the lock containment section having a padlock shackle retaining hole for receiving the padlock shackle with the padlock in an open position, the method comprising the steps of:

a) unlocking the padlock to unlock the locking mechanism;

b) after step (a), removing the padlock from the locking mechanism; and

c) after step (b), placing the shackle of the padlock in the retaining hole of the padlock retaining device so that the padlock does not interfere with opening of the door.

11. The method of claim 10 , comprising the additional step of opening the door.

12. The method of claim 10 , wherein the body section of the padlock retaining device is planar.

13. The method of claim 10 , wherein the body section of the padlock retaining device comprises at least one fastener hole.

14. The method of claim 10 , wherein the lock containment section extends away from the body section at a 90 degree angle with respect to the body section.

15. The method of claim 10 , wherein the padlock retaining device is made from a single plate of steel.

16. The method of claim 10 , wherein the body section of the padlock retaining device is 2 and ¾ inches tall.

17. The method of claim 10 , wherein the body section of the padlock retaining device is 1 and ⅞ inches wide.

18. The method of claim 10 , wherein the body section of the padlock retaining device is in the shape of a body portion and shackle of a padlock.