Sealing arrangement in a microwave oven

DETAILED DESCRIPTION What is claimed is: 1.
A sealing arrangement in a microwave oven having an oven cavity defined by side walls of electrically conductive material and conductive wall portions defining a substantially rectangular access opening, a door for closing said access opening including a frame extending around the door and a perforated sheet covering the space situated inside the frame, a microwave energy seal comprising a quarterwave choke located in the rim portion of the door and having an entrance opening in the rim portions of the door lying opposite to and spaced apart from said conductive wall portions of the cavity, the door frame comprising an integral profile having a substantially U-shaped section of an electrically conductive material with the base of the U, as seen in a sectional view, facing inwardly to the inside of the cavity and with the outer leg of the U forming a portion of the rim portions of the door and being shorter than the inner leg of the U, said perforated sheet being arranged in a plane with the outer end of the inner leg, and means electrically connecting said sheet with said end of the longer inner leg with the sheet extending beyond the inner and the outer legs of the U so that the entrance opening to the choke is formed by the intermediate space between the sheet and the outer shorter leg of the U-shaped profile of the door frame.
2.
A sealing arrangement as claimed in claim 1 wherein said electrical connecting means comprises, a plurality of teeth projecting from said inner leg and evenly distributed along the circumference, which teeth are introduced into corresponding apertures in the sheet with electric contact being enhanced in that the material in the teeth and the sheet material are made to cut into each other by pressing same together.
3.
A sealing arrangement as claimed in claim 1 further comprising an energy absorbent material located outside the entrance opening to the quarter-wave choke as seen in the propagation direction for leaking energy in a space adjoining directly to the quarter-wave choke and said sheet in order to attenuate leaking energy passing the choke entrance opening and leaking energy which propagates through the connection between the longer inner leg of the U-shaped profile of the door frame and the perforated sheet