Sliding door assembly

Claim 1

Sliding Door Assembly comprising: a door having an upper edge and a lower edge interconnected by vertical side edges; upper and lower tracks each being mounted vertically one above the other, said upper and lower tracks spaced apart at a selected distance greater than the height of said door so that said door may be positioned therebetween, said lower track including a channel, an inner side and an outer side, and; means mounted on said upper and lower edges of said door which cooperates with and follows said tracks to permit sliding of said door around corners and curves of said tracks, said means mounting said door on said lower track including a pair of horizontally spaced apart rotatably mounted wheels which rotate within said tracks to roll therealong and be pivotal about a substantially vertical axis with respect to said door, said means includes crank arms which is adapted to be positioned to extend downwardly on the inner side of said tracks and is adapted to strike the inner radius of said inner side of said track whenever said wheels reach a corner, whereby the force of said tracks against said crank arm causes said wheels to pivot with respect to said door thereby aiding the movement of said wheels around a corner in said tracks.