Writing implement

Claim 1

IN A WRITING IMPLEMENT, A BARREL HAVING OPEN ENDS, A FIRST ASSEMBLY MOUNTED WITHIN SAID BARREL FOR MOVEMENT BETWEEN A CONCEALED POSITION AND AN EXPOSED POSITION PROJECTING THROUGH ONE OF SAID OPEN ENDS, A SECOND ASSEMBLY DISPOSED WITHIN SAID BARREL FOR MOVEMENT BETWEEN A CONCEALED POSITION AND AN EXPOSED POSITION PROJECTING THROUGH THE OTHER OF SAID OPEN ENDS, AT LEAST ONE OF SAID ASSEMBLIES HAVING A WRITING POINT, MEANS RESILIENTLY URGING SAID WRITING ASSEMBLIES TOWARD THEIR CONCEALED POSITIONS AND MANUALLY OPERABLE MEANS INCLUDING A CAM ELEMENT MOVABLE TRANSVERSELY IN ONE DIRECTION TOWARD A POSITION BETWEEN SAID ASSEMBLIES TO EFFECT CAMMING OF SAID ASSEMBLIES AWAY FROM EACH OTHER AND TOWARD THEIR EXPOSED POSITIONS, SAID CAM ELEMENT BEING MANUALLY MOVABLE IN THE OPPOSITE DIRECTION TOWARD A POSITION LATERALLY ADJACENT SAID ASSEMBLIES TO PERMIT MOVEMENT OF SAID ASSEMBLIES TO THEIR CONCEALED POSITIONS UNDER THE INFLUENCE OF SAID RESILIENT MEANS.