US Patent 9695851 Panel

The invention relates to a panel including an upper side, an underside, a basic body, complementary locking means, which are provided in pairs on mutually opposite panel edges, and at least one pair of locking means having a receiving hook and an arresting hook. The receiving hook has a hook periphery and a receiving recess. The arresting hook has an arresting recess, an arresting shoulder, a transverse-joint surface and a vertically acting arresting contour. The receiving hook also has a transverse-joint surface and a form-fitting contour. The arresting hook also has a horizontal locking surface on its arresting shoulder. The receiving hook also has a horizontal locking surface in the receiving recess and contains a receiving opening.