Microwave oven having an orthogonal electromagnetic seal
US5958278A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Sep 8, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/763
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An orthogonal electromagnetic seal for an oven that heats items through the use of microwave energy is set forth. The oven has a cavity in which the items are to be placed, an opening to the cavity, and peripheral surfaces that surround the opening to the cavity. One of the peripheral surfaces is orthogonal to the other peripheral surfaces. The electromagnetic seal includes a choke panel, a plurality of tabs, and a choke ring. The choke panel is aligned with and has generally the same shape as the opening. The plurality of tabs extend from a periphery of the choke panel. A first set of the plurality of tabs is generally parallel to the orthogonal peripheral surface. The remaining tabs are parallel with the other peripheral surfaces. Each of the plurality of tabs is positioned between the associated peripheral surface and the choke ring. A choke cavity adjacent to each peripheral surface is defined by the choke ring, the choke panel, and the adjacent peripheral surface. The choke cavity reflects energy propagating in a direction parallel to the adjacent one of the peripheral surface and suppressing energy propagating in a direction transverse to the adjacent one of the peripheral su…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.