A lunch box has a body, and a vessel filled with a freezable liquid so that the latter cools the interior of the body. Also heating element can be provided for heating the interiod of the body part.
A lunch box, comprising a hollow body bounding an inner substantially closed chamber for accommodating food; a hollow vessel removably attached to a part of said body so as to be located in said inner chamber when it is attached, and filled with a liquid which can be frozen and thereby cools said inner chamber; and an electrical heating element connected with said hollow body and connectable with an electric power source so as to be heated and to supply heat into said inner chamber for accommodating food contained in said inner chamber for accommodating ...
이 특허를 인용한 특허 피인용횟수: 14
- Hauk David (183 Florence Ave. Oakland CA 94618). Assembly for storage, transportation and chilling of expressed human milk. USP1989014796758.
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- Miguel-Angel Martin Perianes ES. Portable ice-box. USP200212D467129.
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- Lerner, William S.. Thermal preservation insert for food storage container. USP2005096938793.