Patent ID: 6773185
Filing Date: 2004-08-10
Classification: B43K

Abstract:
A retractile pen, comprising a clip, an outer barrel, and an inner barrel;said clip being fixedly fitted to a rear end of said outer barrel, and having a longitudinally extended first guide slot provided thereat; said outer barrel being provided near the rear end with a second guide slot corresponding to said first guide slot on said clip, and front and rear ends of said second guide slot having increased width to provide two locating slots; and said inner barrel being movably put in said outer barrel and including a cylindrical tube, an ink cartridge mounted in said cylindrical tube, and a writing tip connected to a front end of said cylindrical tube for a front point of said ink cartridge to expose therefrom; said inner barrel having an overall length shorter than said outer barrel and being provided near a rear end of said cylindrical tube with a retaining hole for receiving a spring and a retaining bolt therein, such that said retaining bolt is normally radially pushed outward by said spring; said retaining bolt having a stepped upper portion to provide a size-reduced stub adapted to detachably extend into said locating slots at two ends of said second guide slot on said outer barrel and be held thereto; and said stub being connected to a push button, said push button including an expanded head and a connecting bar downward extended from a bottom center of said expanded head, and said connecting bar being extended through said first guide slot on said clip to connect to said stub with said expanded head located above said clip to straddle said first guide slot; whereby when said push button is downward pushed and slid along said first guide slot, said retaining bolt is brought to move along said second guide slot on said outer barrel and be held to said locating slots at the front or the rear end of said second guide slot, so that said inner barrel is extended from or retracted into said outer barrel, respectively, for writing or storage.