Apparatus and process for firing ceramics
US4898534A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1989 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Jan 31, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2001/1891
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A door assembly for a high temperature oven is disclosed, including a door frame having a cavity which is at least in part wedge-shaped and having apertures through the frame with a resilient seal surrounding the aperture. A door is located within the cavity, and moves in a generally vertical direction from an open position wherein the door is out of contact with the resilient seal and is displaced from the area between the apertures to provide unimpeded passage therethrough, to a closed position wherein the wedge shape causes the door to firmly seal against the resilient seal so that the substantial escape of gases through the closed door does not occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.