US Patent 7263809 Shingle, in particular roof shingle

A shingle includes a shingle neck, and a shingle body. A raised engagement and guide element (5) is disposed at the bottom side of the region of the shingle body (2) disposed remote relative to the shingle neck. The raised engagement and guide element (5) exhibits a raised engagement guide element (5) in the lower region of the shingle body (2). The raised engagement and guide element (5) exhibits a female mold like undercut zone (6) in the direction of the body (2) and disposed remote from the shingle neck. Correspondingly dimensioned male mold like undercut zones (7) are disposed at the two shingle shoulders (4). The width of the two shingle shoulders (4) corresponds in each case to about one half of the width of the raised engagement and guide element (5). Preferably, the shingle is a roof shingle.