Motion sensing seat lock

1. A lock for locking an object in a vehicle in place, the lock comprising:

a base comprising a side surface and a front surface, the side surface having at least one opening, the front surface having a hub mounting portion and a ballast retainer;

a hub rotatably coupled to the hub mounting portion;

a ballast housed within the ballast retainer, the ballast being operatively coupled to the hub;

at least one locking member operatively coupled to the hub;

wherein repositioning of the ballast from an initial unlocked position to a final locked position within the ballast retainer actuates the hub and causes the at least one locking member to extend past the at least one opening; and

wherein the ballast is configured to automatically reposition itself from the initial unlocked position to the final locked position in response to a change in velocity of the vehicle;

and wherein:

the vehicle is an aircraft;

the object is an aft-facing seat in the aircraft;

the ballast retainer comprises a ballast retaining chamber;

the aft-facing seat is locked by the extension of the at least one locking member past the at least one opening in the side surface and at least one hole in an arm of a seat back assembly of the aft-facing seat;

the at least one opening in the side surface consists of a first opening and a second opening; and

the at least one locking member consists of a first locking member and a second locking member.

2. The lock of claim 1 , further comprising:

a hub actuation arm that extends from the ballast to the hub;

wherein the repositioning of the ballast from the initial position to the final position causes the hub actuation arm to move from a first position to a second position; and

wherein the movement of the hub actuation arm from the first position to the second position actuates the hub and causes the hub to rotate.

3. The lock of claim 2 , further comprising:

a first lock support and a second lock support, the first and second lock supports being operatively coupled to the hub; and

wherein the first and second lock supports rotate along with the hub when the hub actuation arm moves from the first position to the second position.

4. The lock of claim 3 , further comprising:

a first connecting rod extending at an angle between the first lock support and the first locking member; and

a second connecting rod extending at an angle between the second lock support and the second locking member.

5. The lock of claim 4 , further comprising:

an alternate ballast retainer;

an alternate hub actuation arm; and

a first alternate lock support and a second alternate lock support;

wherein the alternate hub actuation arm, the first alternate lock support, and the second alternate lock support are operatively coupled to the hub.

6. The lock of claim 5 , wherein:

the alternate ballast retainer comprises an alternate ballast retaining chamber;

the ballast retaining chamber and the alternate ballast retaining chamber are generally in the shape of a crescent.

7. A lock for locking an aft-facing seat in an aircraft in a locked position, the lock comprising:

a base comprising:

a side surface having a first opening and a second opening;

a front surface having a hub mounting portion, a first ballast retainer, and a second ballast retainer;

a hub rotatably coupled to the hub mounting portion;

a ballast housed within the first ballast retainer;

four lock supports operatively coupled to the hub;

two locking members, one locking member each being operatively coupled to two of the four lock supports;

wherein the ballast is configured to reposition itself within the first ballast retainer from an initial position to a final position in response to a change in velocity of the aircraft;

wherein the repositioning of the ballast from the initial position to the final position actuates the hub and causes the hub to rotate;

wherein rotation of the hub causes the four lock supports to rotate along with the hub; and

wherein rotation of the lock supports causes each of the two locking members to extend past a respective opening in the side surface and lock the aft-facing seat in the locked position.

8. The lock of claim 7 , wherein:

the base is generally cylindrical; and

the first and the second ballast retainers respectively comprise first and second ballast retaining chambers.

9. The lock of claim 8 , wherein the ballast is generally in the shape of a crescent.

10. The lock of claim 9 , wherein:

the aft-facing seat includes a seatback assembly and a seat base assembly; and

each locking member extends through a hole in the seatback assembly to lock the seat in the locked position.

11. The lock of claim 9 , wherein:

the aft-facing seat includes a seatback assembly and a seat base assembly; and

each locking member extends through a hole in the seat base assembly to lock the seat in the locked position.

12. The lock of claim 11 , wherein each of the two locking members is coupled to a respective lock support by a connecting rod.

13. The lock of claim 12 , wherein the ballast is configured to reposition itself from the initial position to the final position only in response to a significant deceleration.

14. A lock for locking an object in a vehicle in place, comprising:

a generally cylindrical base comprising a side surface and a front surface, the side surface having a first opening and a second opening opposing said first opening, the front surface having a hub mounting portion and a ballast retaining chamber;

a hub rotatably coupled to the hub mounting portion;

a ballast housed within the ballast retaining chamber, the ballast being operatively coupled to the hub; and

a first locking member and a second locking member each operatively coupled to the hub;

wherein repositioning of the ballast from an initial unlocked position to a final locked position actuates the hub and causes the first locking member to extend past the first opening and the second locking member to extend past the second opening;

wherein the ballast is configured to automatically reposition itself from the initial unlocked position to the final locked position in response to a change in velocity of the vehicle;

wherein the front surface further comprises an alternate ballast retaining chamber opposite the ballast retaining chamber.

15. The lock of claim 14 , wherein the ballast is generally in the shape of a crescent.

16. The lock of claim 14 wherein the object is locked in place by the extension of the first and the second locking members respectively past the first and second openings and into a first hole and a second hole of an assembly of the object.

17. The lock of claim 16 wherein the first locking member is operably coupled to the hub via at least a connecting rod and a lock support.

18. The lock of claim 17 wherein the connecting rod extends from the lock support at an angle.

19. The lock of claim 14 wherein the vehicle is an aircraft.

20. The lock of claim 19 wherein the object is a seat in the aircraft.