Abstract: A ball-point pen is disclosed, having a push button which can be displaced to a limited extent in longitudinal direction of the ball-point pen housing so as to extend the cartridge which is urged by spring in the inward direction, and having a detent means for locking the inwardly-pushed position of the push button. In order to obtain a simple structural form as well as a mechanism which operates trouble-free, it is proposed that the push button be developed as a slide plate and have on its wide side a tongue cut therefrom which extends resiliently transversely out of the wide side and bears the detent tooth of the detent means.

Abstract: A key holder comprising a plate provided with an elastic ring and a detent pawl is insertable into a flat sleeve. The plate has a notch which receives an end section of the ring. The end section is non-displaceable in its fully inserted position since the notch lies within the opening shaft of the flat sleeve.