Quick release door roller assembly

A vertical lift door assembly comprising:

• A door having a front, a back, first and second edges, a top, and a bottom, the door comprising a plurality of rectangular panels including an end panel, adjacent panels being connected with a plurality of respective hinges;
• first and second rollers each comprising a respective wheel and a stem coupled to the wheel along a central axis;
• first and second brackets, each bracket mounted to the front of the end panel adjacent a respective first and second edge, each respective bracket having a support within which a stem of a respective roller is mounted;
• the stem of each respective roller comprising:
• a first shaft extending from the wheel along a central axis, the first shaft coupled to the wheel at an inner end and having an outer end;
• a second shaft with inner and outer ends, the inner end of the second shaft connected to the outer end of the first shaft with a pivot joint, the second shaft positionable along the central axis;
• a locking cylinder surrounding at least a portion of the second shaft and movable between (i) a first position in which the locking cylinder surrounds at least a portion of the first shaft and a portion of the second shaft and (ii) a second position in which at least a portion of the pivot joint is outside of the locking cylinder;
• wherein when the locking cylinder of a respective roller is in the first position the respective first and second shafts are retained in a substantially coaxial position and when the locking cylinder is in the second position the first shaft can pivot relative to the second shaft to permit the wheel of the respective roller, when mounted in a door lift track, to be removed from the door lift track.

A vertical lift door roller assembly comprising:

• a wheel;
• a first shaft extending from the wheel along a central axis, the first shaft coupled to the wheel at an inner end and having an outer end;
• a second shaft with inner and outer ends, the inner end of the second shaft connected to the outer end of the first shaft with a pivot joint, the second shaft positionable along the central axis;
• means for selectively locking the pivot joint, wherein the first shaft and second shaft can be retained in a coaxial position when the pivot joint is locked, and wherein the first shaft can pivot axially relatively to the second shaft when the pivot joint is unlocked.