Valve made from two materials and writing utensil with retractable tip incorporating same
US8246265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2010 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Dec 14, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K24/08
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A valve includes a first valve portion made from a first material, the first valve portion including a body, a door, and an inner hinge pivotably connecting the body to the door, the body including a first opening at a first end and a second opening at a second end opposite the first end, and a circumferential recess disposed in the second end, wherein the inner hinge pivotably connects the door to the body at the first end and a second valve portion made from a second material, the second valve portion including an inner seal disposed in the circumferential recess, the inner seal including a circumferential ridge extending inwardly, the second valve portion further including a door seal disposed on the first end of the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.