TELESCOPING WRITING IMPLEMENT

摘要

Disclosed is a telescoping writing implement that retracts the writing point when in the collapsed position. Importantly, it is simple in design, uses a minimized number of parts, and, uses no metal coil spring. In its most general form, an external pen body is mechanically connected to a writing cartridge such as ballpoint pen refill or touch screen stylus through at least one aperture in a guide tube. Movement of the external pen body downward draws the writing cartridge down inside the guide tube until the writing end of the writing cartridge is exposed and the connecting means such as a clip, screw or pin contacts the lower edge of the aperture or apertures. When the outer pen body is moved upward, it draws the writing cartridge with it inside the guide tube until the writing end is protected inside the guide tube. The limits of travel are governed by the dimensions of the aperture or apertures when the connecting means contacts the edge of the aperture or apertures. Additional elements may include an upper pen body, a pocket retainer clip and internal position detents. Applications include ball point pens, felt tip pens, and computer input styluses.

主权项

1. A telescoping writing implement that telescopes from a shortened configuration to a lengthened configuration comprising:
a writing cartridge having a writing tip; a least one outer pen body; a guide tube disposed circumferentially around the writing cartridge, the guide tube configured with the writing tip within the guide tube when the writing implement is in the shortened configuration and the writing tip exposed from the guide tube when the writing implement is in the lengthened configuration; and a retaining member engaging the writing cartridge and the retaining member also engaging or formed from the outer pen body, the engagement of the retaining member to the writing cartridge causing the writing tip to be exposed from the guide tube when the writing implement is in the lengthened configuration.