(under subclass 527) Coupling part wherein the holding or
retaining means comprises a generally planar sheet having an opening therethrough, the device including a component adapted to be strained within its elastic limit and engage the margin of the opening by yieldable urging thereof as the device tends to return to its original shape to prevent undesired separation of the coupling part (or mating part) and the planar sheet.
(1) Note. A coupling part with a securing means forced into an opening in the sheet to prevent undesired separation (press fit) is included herein.
