Rekeyable lock assembly with blown cylinder protection

1. A rekeyable lock cylinder comprising:

a plug body with a keyway opening along a longitudinal axis and a multiple of channels transverse to said axis;

a rekeying feature adjacent to said keyway opening wherein said rekeying feature includes a first wall and a second wall in a perpendicular arrangement, said first wall parallel to said keyway opening; and,

a first support and a second support, said first support forward of said second support relative to a plug face of said plug body and wherein said first support defines a first recess generally along said first wall and a second recess is generally along said second wall, said first recess at least partially intersects with said second recess.

2. The rekeyable lock cylinder as recited in claim 1 , wherein said rekeying feature is generally opposite said multiple of channels.

3. The rekeyable lock cylinder as recited in claim 1 , wherein said rekeying feature receives a lock assembly movable with respect to insertion of a key into said keyway opening, said lock assembly includes a holding bar with a key engagement member movable with respect to insertion of said key.

4. The rekeyable lock cylinder as recited in claim 1 , wherein said rekeying feature receives a lock assembly movable with respect to insertion of a key, said lock assembly comprising:

a holding bar with a key engagement member movable with respect to insertion of said key, said holding bar includes a spring cup on an opposite side of said key engagement member relative an arm, said spring cup received within said first support;

a spring at least partially within said spring cup;

a holding bar cover engaged with said first support to retain said spring between said spring cup and said holding bar cover; and

a stop adjacent to said holding bar cover, said stop engaged with said second support.

5. The rekeyable lock cylinder as recited in claim 4 , wherein said key engagement member includes a relatively flat section which faces said keyway opening and a raised section opposite thereto.

6. A rekeyable lock cylinder comprising:

a cylinder body which defines a longitudinal axis;

a plug body positionable within said cylinder body, said plug body includes a keyway opening along said longitudinal axis;

a carrier disposed adjacent said plug body;

a plurality of pins disposed in said plug body; and

a rekeying feature adjacent to said keyway opening wherein said rekeying feature receives a lock assembly movable with respect to insertion of a key, wherein said lock assembly includes a holding bar with a key engagement member movable with respect to insertion of said key wherein said key engagement member includes a relatively flat section which faces said keyway opening and a raised section opposite thereto, and wherein said raised section is engageable with a detent recess located within an interior surface of a cylinder wall of said lock cylinder body when said key is not fully inserted into said keyway opening.

7. The rekeyable lock cylinder as recited in claim 6 , wherein said holding bar includes a spring cup on an opposite side of said key engagement member relative an arm.

8. The rekeyable lock cylinder as recited in claim 7 , wherein said spring cup receives a spring, said spring retained by a holding bar cover engaged with said rekeying feature.

9. The rekeyable lock cylinder as recited in claim 8 , further comprising a stop adjacent to said holding bar cover, said stop engaged with said rekeying feature.

10. A rekeyable lock cylinder comprising:

a cylinder which defines a longitudinal axis;

a plug body rotatable within said cylinder;

a multiple of pins movably mountable within said plug body transverse said longitudinal axis;

a multiple of biasing members to bias said respective multiple of pins toward a keyway opening;

a carrier mountable adjacent said plug body;

a multiple of racks slidably movable transverse to said longitudinal axis, said multiple of racks engaged with said multiple of pins in response to said carrier being at a first predetermined position, said carrier axially displaceable along said longitudinal axis to selectively disengage said multiple of racks from said multiple of pins in response to said carrier being at a second predetermined position; and

a rekeying feature adjacent to the keyway opening wherein said rekeying feature includes a first wall and a second wall in a perpendicular arrangement, said first wall parallel to said keyway opening, a first support defines a first recess generally along said first wall and a second recess is generally along said second wall, said first recess at least partially intersects with said second recess.

11. The rekeyable lock cylinder as recited in claim 10 , wherein said rekeying feature receives a lock assembly movable with respect to insertion of a key, said lock assembly comprising:

a holding bar with a key engagement member movable with respect to insertion of said key, said holding bar includes a spring cup on an opposite side of said key engagement member relative an arm, said spring cup received within said first support;

a spring at least partially within said spring cup;

a holding bar cover engaged with said first support to retain said spring between said spring cup and said holding bar cover; and

a stop adjacent to said holding bar cover, said stop engaged with a second support.

12. A rekeyable lock cylinder comprising:

a plug body with a keyway opening extending along a longitudinal axis within said plug body and a channel transverse to said axis;

a rekeying feature adjacent to and extending into said keyway opening wherein said rekeying feature includes a portion that moves radially inwardly and outwardly relative to said longitudinal axis in response to insertion of a key, said portion not interfering with locking or unlocking operations of said lock cylinder if a key is not fully inserted if said plug body is in a first position and said portion interfering with rekeying of said lock cylinder by extending outside of said plug body if a new key is not fully inserted in said keyway opening if said plug body is in a second position; and

wherein said rekeying feature includes a first wall and a second wall in a perpendicular arrangement, said first wall parallel to said keyway opening, a first support defines a first recess generally along said first wall and a second recess is generally along said second wall, said first recess at least partially intersects with said second recess.

13. The rekeyable lock cylinder of claim 12 further comprising:

a recess in which said portion that extends outside of said plug body is received if a new key is not fully inserted in said keyway opening if said plug body is in a second position, said recess and said portion cooperating to block rotation of said plug body.

14. The rekeyable lock cylinder of claim 12 wherein said portion contacts a contour of said new key as said new key is inserted in said keyway opening.

15. The rekeyable lock cylinder of claim 14 wherein said portion contacts said contour on a side of said new key opposite a cut side thereof.

16. The rekeyable lock cylinder of claim 14 wherein said portion is biased to be in contact with said new key by a spring.

17. The rekeyable lock cylinder of claim 16 wherein an axis of said spring is parallel to said keyway opening.