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US 2021/0187994 A1Published application
Mechanical pencil
AssigneesKotobuki & Co., Ltd., Pica-Marker VermöGens GmbH & Co. KG
InventorsHidehei Kageyama, Tadao Odaka, Toshikazu Sasaki
Life of this patent
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Abstract
A mechanical pencil includes a writing lead, a chuck that chucks the writing lead and feeds the writing lead forward, and a shaft tube for housing the writing lead and the chuck. When a click operation for feeding the chuck forward is performed, a jet stream flowing forward is generated inside the shaft tube.
Claims20
A mechanical pencil, including:
- a writing lead;
- a chuck that chucks the writing lead and feeds the writing lead forward;
- and
- a shaft tube for housing the writing lead and the chuck,
- wherein, when a click operation for feeding the chuck forward is performed, a jet stream flowing forward is generated inside the shaft tube.
2 more elements
A mechanical pencil, including:
- a writing lead;
- a chuck that chucks the writing lead and feeds the writing lead forward;
- a shaft tube for housing the writing lead and the chuck;
- and
- a spacer disposed on a rear end part of the shaft tube,
- wherein the spacer provides a flow path for a jet stream generated inside the shaft tube as the chuck is fed forward.
3 more elements
Dependencies are inferred from the claim text.