Patent ID: 6095706
Filing Date: 2000-08-01
Classification: B43K

Abstract:
A writing instrument comprising:a hollow body;a writing member accommodated in said hollow body;a spring accommodated in said hollow body for forcing said writing member backwardly;moving means for moving said writing member between a retracted position and a writing position, said moving means including a rotary cam, having a central bore through which said writing member is extendable, for receiving said writing member, a sliding cam, having a cam surface for engaging said rotary cam and a central bore through which said writing member is extendable, for actuating said rotary cam when said sliding cam is displaced forwardly toward a forward end portion of said hollow body, said hollow body including a forward portion having a inner surface provided with cam grooves for cooperating with said cams to guide said cams;an operating member provided on said hollow body and arranged to be operated by a finger of a user at a holding position for operating said moving means to control extending and retracting of said writing member;an engaging member for engaging said sliding cam; andconnecting means, extending through a slit provided in the forward portion of said hollow body provided with said cam grooves, for connecting said engaging member and said operating member together.