Invention Grant
US4521233A Disc cover for a frying pan or vessel 失效
煎锅或容器的盘盖

Disc cover for a frying pan or vessel
Abstract:
A disc-like cover for a frying pan comprising a disc stamped to form a carrier ring with a plurality of spoke-like radial arms connected to the ring and extending inwardly to a central region at which the radial arms merge together. A steam permeable filter of fibrous material is secured to the disc on one side thereof to cover open sectors formed in the disc between the arms. The filter is secured to the disc by a permanent adhesive. The arms each have a plurality of transverse relief cuts respectively extending from one radial edge of the associated arm partially across the width of the arm over a length greater than one-half of the width. The cuts extend parallel to one another in the region where the arms are joined to the carrier ring to form a weakening zone permitting limited change in shape of the arm. The adhesive between the filter and disc is reduced to a narrow zone at the relief cuts to leave an unadhered zone between the filter and disc adjacent the narrow zone.
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