Abstract: The invention relates to a pen including a tubular body and a rigid fastening clip that extends longitudinally of the body and is pivotably movable with respect to the body, characterized in that the clip (6) is solidly attached in its upper portion (7) to at least one point of an elastic device (8, 9) accommodated in the body (1, 2) and immobilized with respect to it in the longitudinal and transverse directions.
Abstract: A light sailboat is provided with a transversely disposed sliding rail which extends from one side of the boat to the other. The sailboat is also provided with a seat which slides freely along this sliding rail.
Abstract: A device for releasable attachment of an object to a support member, such as a precious stone to a brooch or necklace, includes a first member for attachment to the object and having a releasable locking device and a second member for attachment to the support member and having a tab insertable into a slot of the first member to be engaged by the locking device to thereby releasably secure the first and second members together.