Metal working – Method of mechanical manufacture – Combined manufacture including applying or shaping of fluent...
Reexamination Certificate
1999-11-02
2001-04-17
Echols, P. W. (Department: 3726)
Metal working
Method of mechanical manufacture
Combined manufacture including applying or shaping of fluent...
C427S348000
Reexamination Certificate
active
06216332
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method of manufacturing a non-stick pan with innovative wear-resisting and non-stick features, and more particularly to a method of manufacturing a non-stick pan whose surface of Teflon coat is hard and wear-resisting so as not to be destroyed through a long time of use.
2. Description of the Related Art
A conventional pan is made of iron board, and on the surface of the iron board is painted with a coat of paint or Teflon after the pan being formed. After being used for a period of time, the paint or Teflon coat adhered to the surface of the conventional pan will be stripped or scratched by a slice or a steel brush. The stripped or scratched paint or Teflon will be easily stuck to the food being cooked in the pan so as to be eaten by persons and result in accidents. Besides, the stripped or scratched portions of the pan surface will be easily stuck by cooked food and rusted so as to shorten the using life of the pan.
SUMMARY OF THE INVENTION
Therefore, the present invention is to provide a method of manufacturing a non-stick pan that substantially obviates the drawbacks of the related conventional art.
An object of the present invention is to provide a method of manufacturing a non-stick pan that is provided with a strong surface to prevent from being worn by a slice or a steel brush.
Another object of the present invention is to provide a method of manufacturing a non-stick pan that is provided with a Teflon coat adhered to a ceramic and porcelaneous mixture coat so as to protect the pan from being stripped or scratched and make the pan be used for a longer time.
Yet another object of the present invention is to provide a method of manufacturing a non-stick pan that can prevent the food cooked in the pan from being stuck by harmful material so as to ensure the safety of persons.
To achieve these advantages, the present invention provides a method of manufacturing a non-stick pan. The first step is to apply and spread a ceramic and porcelaneous mixture coat and a Teflon coat on the surface of a percussion-molded pan made of non-carbon iron board. The two coats are respectively dealt at different high temperatures and time, and the surface of the ceramic and porcelaneous mixture coat is made to be concave-convex for the Teflon coat to be firmly adhered to. Therefore, the nonstick pan is provided with a strong surface to prevent from being stripped or scratched by a slice or a steel brush.
REFERENCES:
patent: 3825993 (1974-07-01), McGinnis et al.
patent: 4070525 (1978-01-01), Vasgiliou et al.
patent: 5694674 (1997-12-01), Flammang
Echols P. W.
Rosenberg , Klein & Lee
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