Abstract: Systems and methods according to the present invention relate generally to hardware, and more specifically to door guiding hardware. Cantilevered mounting brackets are provided to interface with a track, which may be mounted to a vertical support surface such as a wall or doorway. One of the brackets is stationarily mounted with respect to the track and the other includes a bearing that is movable in and guided by the track. The brackets are suited for affixation to a multi-panel door, such as a bi-fold door.

Abstract: A mechanism directed to the art of rolling ladders is provided. A swivel roller capable of being attached to a rolling ladder to enable the rolling ladder to traverse an interior corner. The swivel roller has a mounting bracket with a hinged member and first and second wheels for supporting and moving the rolling ladder along a rail.

Abstract: Systems and methods are provided for interfacing to a guide rail. Provided is an improved rail interface wheel is provided including a continuous U-channel formed about a periphery of a puck shaped wheel body. The rail interface wheel is configured to spin about a spin axis. The U-channel includes a primary diameter measured parallel to the spin axis and a secondary diameter measured along a line that is coplanar with but not parallel to the spin axis. The secondary diameter is preferably at least as great as the primary diameter. The rail interface wheel may be used in combination with a movable structure, such as a library ladder.