Erasing liquid pen
US5915872A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1998 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Mar 2, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43M11/085
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A correction pen has a joining mechanism for joining together a front end portion (11) of a barrel (1), and a coupling portion (22) of a head member (2). The joining mechanism is constructed so that an inner cylindrical portion (22b) is pressed in a first coupling section (11a), an annular bead (2a) formed on an outer cylindrical portion (22a) squeezes a second coupling section (11b), and a bead (2c) formed on a step (22c) is pressed against the front end surface (1a) of the first coupling section when an annular ridge (1b) formed on the second coupling section (11b) is fitted in an annular groove (2b) formed in the outer cylindrical portion (22a). A ball holding tube (7) is provided with a ball housing bore (7b) and a connecting bore (7d) formed so that a low step is formed between the ball housing bore and the connecting bore. The edge of the tip of the ball holding tube is rounded. A head member is provided with a spring support portion (2f) for supporting a coil spring (8), provided with slots (2g). A cap releasing member (9) for releasing a cap (5) put on a head portion(222) of a barrel assembly (E) has operating portions disposed on the side surface of the cap so as to be in …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.