Lipstick assembly having automatic cap
US8591129B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2012 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | May 25, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45D40/22
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The lipstick assembly has an outer tube, a middle tube, a rotational control base, and a lipstick base. A vertical groove is configured on an inner surface of the outer tube for joining and confining the middle tube to move only up and down. Helical grooves are configured separately in an upper section and a lower section on an inner surface of the middle tube. The lower helical groove is joined to the rotational control base whereas the upper helical groove is joined to the lipstick base. When the rotational control base is twisted in one direction, the middle tube is raised upward to force a cap of the outer tube to open. Then, by twisting the rotational control base in an opposite direction, the middle tube is retracted and the cap automatically seals the lipstick assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.