Abstract: The method and apparatus described herein allows for the automatic retraction and extension of the writing element of a bistable self-retaining writing instrument. The method and apparatus consists of a writing element that is joined to the end of a flexible tube or material. These are inserted through a longitudinal channel formed along the outer surface of the writing instrument and are anchored only at the end opposite the writing element. When the bistable self-retaining writing instrument transitions from a coiled to straight configuration the writing element is automatically exposed. Conversely, when pushed into its coiled configuration the writing element slides back into the channel and is thereby protected. The flexible tube or material may also act as a reservoir for a writing substrate such as ink.

Abstract: The method and apparatus described herein allows for the automatic retraction and extension of the writing element of a bistable self-retaining writing instrument. The method and apparatus consists of a writing element that is joined to the end of a flexible tube or material. These are inserted through a longitudinal channel formed along the outer surface of the writing instrument and are anchored only at the end opposite the writing element. When the bistable self-retaining writing instrument transitions from a coiled to straight configuration the writing element is automatically exposed. Conversely, when pushed into its coiled configuration the writing element slides back into the channel and is thereby protected. The flexible tube or material may also act as a reservoir for a writing substrate such as ink.

Abstract: The method and apparatus described herein allows for the automatic retraction and extension of the writing element of a bistable self-retaining writing instrument. The method and apparatus consists of a writing element that is joined to the end of a flexible tube or material. These are inserted through a longitudinal channel formed along the outer surface of the writing instrument and are anchored only at the end opposite the writing element. When the bistable self-retaining writing instrument transitions from a coiled to straight configuration the writing element is automatically exposed. Conversely, when pushed into its coiled configuration the writing element slides back into the channel and is thereby protected. The flexible tube or material may also act as a reservoir for a writing substrate such as ink.

Abstract: Self-retaining writing instruments include a bistable metal body that is selectively positionable and retainable in a coiled configuration and alternatively in an elongated configuration, and a writing element, such as a pencil, pen, marker, or stylus, disposed at a first end of the writing instrument. The coiled configuration may be suitable for coiling around an object and the elongated configuration may be suitable for use as a writing instrument. The bistable metal body may be configured to automatically assume the coiled configuration when flexed to a certain degree while in the elongated configuration.

Abstract: Self-retaining writing instruments include a bistable metal body that is selectively positionable and retainable in a coiled configuration and alternatively in an elongated configuration, and a writing element, such as a pencil, pen, marker, or stylus, disposed at a first end of the writing instrument. The coiled configuration may be suitable for coiling around an object and the elongated configuration may be suitable for use as a writing instrument. The bistable metal body may be configured to automatically assume the coiled configuration when flexed to a certain degree while in the elongated configuration.