OVERHEAD DOOR WITH STACKING PANELS

1 . An overhead door comprising:

a plurality of unconnected panels, each panel comprising a first and second end; an outer and inner surface; and a top and bottom edge; wherein each top and bottom edge comprises a top edge retention geometry and a bottom edge retention geometry, respectively; the top edge retention geometry engaging and disengaging an adjacent panel bottom edge retention geometry to prevent lateral displacement of the panels when engaged; and

a first and second end cap attached to the respective first and second end; each end cap comprising at an inferior end a retentive member, a bearing receiving geometry, a panel fastening section, a first and second end cap bearing, an adjacent panel slide member receiving section, and a slide member;

wherein

each panel end operatively engages a respective guide assembly;

the plurality of unconnected panels further comprises a bottom panel comprising an operative attachment member;

the guide assembly comprises a vertical section and a horizontal section with a guide assembly radius therebetween; each section comprising a first and second track; and

upon each panel separation a total door weight is reduced by a weight of the separated panel.

2 . The overhead door of claim 1 wherein the first and second track are separated from one another by a distance equal to a width of a panel.

3 . The overhead door of claim 1 wherein the first and second track are separated from one another in the vertical section by an offset distance between a first engagement member and a second engagement member.

4 . The overhead door of claim 1 wherein one edge retention geometry comprises a tongue and the other retention geometry comprises a groove wherein the tongue and respective groove of adjacent panels are angled from normal.

5 . The overhead door of claim 4 wherein a tongue angulation and a groove angulation are both about 10 degrees to about 25 degrees.

6 . The overhead door of claim 4 wherein a tongue angulation and a groove angulation are both about 18 degrees.

7 . The overhead door of claim 1 wherein one edge retention geometry comprises a first stepped geometry and the other retention geometry comprises a second stepped geometry wherein each respective stepped geometry of adjacent panels are angled from respective panel edge normal.

8 . The overhead door of claim 4 wherein a tongue angulation and a groove angulation are both about 10 degrees to about 25 degrees.

9 . The overhead door of claim 4 wherein a tongue angulation and a groove angulation are both about 18 degrees.

10 . The overhead door of claim 1 wherein one edge retention geometry comprises a lip angle and the other retention geometry comprises a trough angle.

11 . The overhead door of claim 4 wherein the lip angle and the trough angle are both about 10 degrees to about 25 degrees.

12 . The overhead door of claim 4 wherein the lip angle and the trough angle are both about 18 degrees.

13 . The overhead door of claim 1 further comprising a thermal break piece attached to each panel.

14 . The overhead door of claim 1 wherein the end cap retentive member comprises a hook geometry and the bearing receiving geometry comprises scalloping,

15 . The overhead door of claim 14 wherein the hook geometry comprises a hook radius and an engagement leg.

16 . The overhead door of claim 1 wherein the first end cap bearing is superior to the second end cap bearing and each bearing is captured by the respective first and second track.

17 . The overhead door of claim 16 wherein the first and second bearing are horizontally offset from one another and each bearing has a first bearing end and a second bearing end separated by a bearing groove therebetween; each bearing end captured by a respective first and second guide assembly track chamber.

18 . The overhead door of claim 1 wherein the slide member comprises an end cap retentive member engaging end and an end cap retentive member receiver.

19 . The overhead door of claim 18 wherein the retentive member engaging end comprises a slide member radius; the retentive member receiver comprises a slide member slot; the end cap further comprises an acute hook disengagement angle; and the slide member further comprises an acute slide member slot angle.

20 . The overhead door of claim 19 wherein both the acute hook disengagement angle and the acute slide member slot angle are both between about 65 degrees and about 75 degrees.

21 . A door panel comprising:

a first and second end;

an outer and inner surface;

a top and bottom edge; and

a first and second end cap attached to the respective first and second end; each end cap comprising at an inferior end a retentive member, a bearing receiving geometry, a panel fastening section, a first and second end cap bearing, an adjacent panel slide member receiving section, and a slide member;

wherein

each top and bottom edge comprises a top edge retention geometry and a bottom edge retention geometry, respectively; the top edge retention geometry engaging and

disengaging an adjacent panel bottom edge retention geometry to prevent lateral displacement of the panels when engaged;

the end cap retentive member comprises a hook geometry and the bearing receiving geometry comprises scalloping;

the first end cap bearing is superior to the second end cap bearing and the bearings are horizontally offset from one another; and

the slide member comprises an end cap retentive member engaging end and an end cap retentive member receiver.

22 . The door panel of claim 21 wherein each bearing has a first bearing end and a second bearing end separated by a bearing groove therebetween.

23 . The door panel of claim 21 wherein the retentive member engaging end comprises a slide member radius; the retentive member receiver comprises a slide member slot; the end cap further comprises an acute hook disengagement angle; and the slide member further comprises an acute slide member slot angle.

24 . The door panel of claim 23 wherein both the acute hook disengagement angle and the acute slide member slot angle are both between about 65 degrees and about 75 degrees.