| 摘要 |
A writing implement with a movable sleeve that can be raised by light finger pressure and automatically or manually lowered into a protective position between writing uses. Alternative means can be used to raise and lower the sleeve, such as but not limited to a push bar, roll ball, lever, sliding mechanism, or depressible button. A stop disk prevent the sleeve from being fully withdrawn from the writing implement housing and a locking mechanism between the housing and the sleeve prevents casual contact from prematurely releasing the sleeve from its protective position. Optionally, braces can be used to stabilize the marking material cartridge, a sleeve insert can be used to prevent the writing tip from drying out, and a swivel clip with a high friction grip can be employed to securely position the writing implement between uses. Applications can include use with pens, pencils, markers, paint markers, crayons, and highlighters.
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