Electric heating device for preventing contact wearing out and tobacco falling out
US12041967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2018 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Oct 24, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24F40/42
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present disclosure provides an electric heating device including: a protective cover provided with an inner protrusions and an outer protrusions of the protective cover; a heating cavity, where the bottom of the heating cavity adopts a closing structure that is gradually narrowed, and includes an outer wall and an inner wall of the heating cavity, where the heating cavity outer wall is provided with a protrusions on the heating cavity outer wall, where the heating cavity inner wall is provided with a protrusions on the heating cavity inner wall; and a heating means located in the heating cavity, where the inner protrusions on the heating cavity outer wall are snap-fitted with the outer protrusions of the protective cover, and where the outer protrusions on the heating cavity inner wall are snap-fitted with the inner protrusions of the protective cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.