Apparatus for adjustably retaining an expendable medium for writing and/or drawing
US12391060B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2023 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Jun 1, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K23/016
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An apparatus for adjustably retaining an expendable medium for writing or drawing such as for a crayon core, a wax or oil based pencil (colored pencil) core, a chalk core or a pastel core includes a tubular barrel, at least one elongated arcuate body element, and a follower in abutting engagement with a portion of the body. The follower has a helical surface feature corresponding with spaced surface features of the body. The follower is configured to receive a non-writing end of an expendable core. The apparatus is configured such that the outer barrel of the apparatus can be made from a paper based material such as paperboard or other fibrous material that is more eco-friendly than other material such as plastics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.