Tail Plug and Writing Instrument
AssigneeKuretake Co., Ltd.
InventorsIchiro Nishitani, Makiko Morimoto
Life of this patent
Estimating the term…
Abstract
Provided is a tail plug to be attached to a tail end of a shaft part of a writing instrument. The tail plug includes an inner plug that is fitted into the shaft part and an outer plug that is coupled with the inner plug. The inner plug has a first opening through which a fluid can flow in an axial direction of the shaft part; the outer plug has a second opening through which a fluid can flow in the axial direction of the shaft part, and at least one of the first opening and the second opening are configured to be closed when the outer plug and the inner plug are coupled with each other.
Claims5
A tail plug to be attached to a tail end of a shaft part of a writing instrument, the tail plug comprising:
- an inner plug that is fitted into the shaft part:
- and
- an outer plug that is coupled with the inner plug;
- the inner plug having a first opening through which a fluid can flow in an axial direction of the shaft part;
- the outer plug having a second opening through which a fluid can flow in the axial direction of the shaft part, and
- at least one of the first opening and the second opening being configured to be closed when the outer plug and the inner plug are coupled with each other.
Dependencies are inferred from the claim text.