Patent ID: 7553116
Filing Date: 2009-06-30
Classification: F16B,Y10S

Abstract:
1. Fastener adapted to be fixed in a cavity of predetermined contour, said fastener comprising: a first part having a stem and a head attached to an end of the stem; and a second part having two elastic feet and a plate from which the elastic feet project transversely, the stem being adapted to slide in an opening formed in the plate; wherein the first part further comprises a stop surface projecting transversely of the stem at the end thereof remote from the head and a longitudinal rib is attached along the stem and includes a tooth proximate to the stop surface; wherein at least one aperture is formed on edges of said opening in said plate, said at least one aperture configured to angularly orient the first part with respect to the second part, whereby the stem urges the elastic feet apart; the fastener further comprising: a waiting position in which said plate is clamped between said stop surface and said tooth, thereby holding the first part in the second part; a locking position in which the first part and the second part fit one into the other, the stem facing the elastic feet and is rotateable with respect to the plate, the second part being clamped between the head and the stop surface of the first part, wherein the elastic feet are urged apart by the stem; an unlocking position in which the first part and the second part fit one into the other, the stem facing the elastic feet and rotateable with respect to the plate, the second part being clamped between the head and the stop surface of the first part, wherein the elastic feet are free with respect to the stem; the fastener being configured to pass from the waiting position to the locking position by pushing in of the stem, and to pass from the locking position to the unlocking position and vice-versa simply by rotation of the stem; wherein the plate comprises a circular shoulder adapted to cooperate with the stop surface when the fastener is in waiting position.