Patent ID: 8119955

Claim:
A device for preventing microwave leakage for a microwave oven, the device comprising: a cavity assembly having an opening portion formed therein through which heating energy generated by an energy generator is supplied into a cooking chamber provided within the cavity assembly; a cover provided on a side of the cavity assembly to cover the opening portion; a choke member provided between the cavity assembly and the cover to prevent microwaves supplied into the cooking chamber from leaking through a gap between the cavity assembly and the cover, wherein the choke member comprises: an open section corresponding to the opening portion of the cavity assembly; and a choke section surrounding the open section, wherein the choke section comprises a choke portion including a plurality of choke pieces that each protrude from an inner peripheral edge of the choke section, and a plurality of indented sections, wherein the plurality of choke pieces and the plurality of indented sections are sequentially alternated at predetermined intervals along the inner peripheral edge of the choke section corresponding to an outer peripheral edge of the open section; and an insulator installed on an upper surface of the cavity assembly, the insulator comprising: an opening formed therein corresponding to the opening portion of the cavity assembly; and extension ribs extending downward along a peripheral edge of the opening, wherein the choke section is inserted into the opening formed in the insulator and positioned adjacent to the extension ribs.