Patent ID: 9187909
Filing Date: 2015-11-17
Classification: F41H

Abstract:
1. A tile having: a major surface face bounded by an octagonal edge at the perimeter of the major surface face, the edge consisting of four side edge portions and four chamfer edge portions, the side and chamfer edge portions alternating progressively around the perimeter with each pair of adjacent side and chamfer edge portions extending from a corner at an internal angle of 13 a minor surface face that is bounded by a rectangular edge at the perimeter of the minor surface face, the edge consisting of four edge portions that respectively extend in parallel to the four side edge portions of the major surface face when the tile is viewed facing normal to the minor surface face with each pair of adjacent edge portions extending from a corner at an internal angle of 90° relative to each other and, the minor surface face having a smaller area than the major surface face, the minor surface face being positioned such that the perimeter of the minor surface face does not extend outwardly of the perimeter of the major surface face when the tile is viewed facing normal to the minor surface face, and the distance from the minor surface face perimeter to the major surface face perimeter being uniform around the perimeter of the minor surface face where the distance is measured along lines extending perpendicular to the side edge portions of the major surface face as viewed facing normal to the minor surface face, each side edge portion of the perimeter of the major surface face is the same length as and extends in parallel to the nearest edge portion of the perimeter of the minor surface face, and each corner of the perimeter of the major surface face is aligned with two corners of the perimeter of the minor surface face along a line that coincides with an edge portion of the perimeter of the minor surface face, as viewed facing normal to the minor surface face; and edge surfaces extending between the perimeters of the major and minor surface faces, without any undercut portion relative to an axis that extends normal to at least one of the major and minor face surfaces, at least one of the edge surfaces and a portion of the major surface face defining a laterally extending ledge that is shaped so that plural tiles can fit together edge-to-edge with a ledge of the one tile overlying a ledge of the abutting tile with only a portion of the thickness of each tile overlapping, and the edge surfaces being shaped such that the edge surface of the one tile generally conforms to the edge surface of the other tile when the pair of tiles is positioned edge-to-edge with their respective major and minor surface faces facing in opposite directions.