Invention Grant
- Patent Title: Mechanical pencil
-
Application No.: US17620963Application Date: 2020-06-17
-
Publication No.: US11993097B2Publication Date: 2024-05-28
- Inventor: Yusuke Sanada , Nobukazu Seri , Yuji Kawarazaki , Takumi Kajiwara , Tomoharu Oonishi
- Applicant: KABUSHIKI KAISHA PILOT CORPORATION
- Applicant Address: JP Tokyo-to
- Assignee: KABUSHIKI KAISHA PILOT CORPORATION
- Current Assignee: KABUSHIKI KAISHA PILOT CORPORATION
- Current Assignee Address: JP Tokyo-To
- Agency: WENDEROTH, LIND & PONACK, L.L.P.
- Priority: JP 19114920 2019.06.20 JP 19114924 2019.06.20
- International Application: PCT/JP2020/023862 2020.06.17
- International Announcement: WO2020/256037A 2020.12.24
- Date entered country: 2021-12-20
- Main IPC: B43K21/16
- IPC: B43K21/16 ; B43K21/00

Abstract:
A mechanical pencil has: a shaft tube; a ferrule unit supported by the shaft tube; a lead holding unit having a chuck configured to relatively move with respect to the ferrule unit to eject lead held by the same; and an indication body provided movably in an axial direction. The indication body delimits from rearward a lead storage space formed rearward the chuck in the shaft tube. The indication body located at least at a predetermined position is viewable from outside the shaft tube. A length along the axial direction between a rear end of the lead storage space and a front end of the ferrule unit, in a state where the indication body has moved most rearward along the axial direction, is equal to or more than twice a length of spare lead to be stored in the lead storage space.
Public/Granted literature
- US20220410614A1 MECHANICAL PENCIL Public/Granted day:2022-12-29
Information query