Non-Stick Cooking Container

• US 20160113439A1
• Filed: 04/29/2014
• Published: 04/28/2016
• Est. Priority Date: 05/03/2013
• Status: Active Grant

• Current Assignee: SEB SA
• Original Assignee: SEB SA
• Inventors: Chen, Jun, Fu, Ji Qiang, Qu, Yi Sheng
• Granted Patent: US 10,194,771 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A47J 27/002 Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
• CPC Class Codes: A47J 36/025 Vessels with non-stick features, e.g. coatings

Abstract

Provided is a non-stick cooking container, comprising a container body, in which the container body comprises a ribbed inner surface, the ribbed inner surface comprising a plurality of ribs and grooves arranged at regular intervals, a non-stick coating covering the surfaces of the ribs and the grooves, the ribs comprising a top surface, the grooves comprising a bottom surface. It is difficult to scratch or chip off the non-stick coating of the non-stick cooking container, which allows the cooking container to retain the non-stick properties over a long period.

Claims

1. A non-stick cooking container comprising a container body, wherein the container body has a ribbed inner surface, the ribbed inner surface having a plurality of ribs and grooves disposed at regular intervals, a non-stick coating covering the surfaces of the ribs and grooves, the ribs having a top surface, the grooves having a bottom surface, a width (B) at the top surface of the ribs being greater than a thickness (R) of the non-stick coating on the top surface of the ribs, wherein the thickness (R) of the non-stick coating on the bottom surface of a groove is greater than a height difference (V) of the surface of the non-stick coating between the bottom surface of said groove and the top surface of an adjacent rib.

2. The non-stick cooking container as in claim 1, wherein the top surfaces of the ribs are flat or cambered and wherein the bottom surfaces of the grooves are flat or cambered.

3. The non-stick cooking container as in claim 1, wherein lateral walls of the ribs are flat or cambered.

4. The non-stick cooking container as in claim 1, wherein two neighboring ribs are separated by an interval (L) measuring between 0.3 mm and 1 mm.

5. The non-stick cooking container as in claim 4, wherein a ratio of a width (B) of the ribs to the interval (L) is between 1/3 and 1/2.

6. The non-stick cooking container as in claim 1, wherein a separation angle (α

) between two lateral walls of the same rib is an acute angle.

7. The non-stick cooking container as in claim 6, wherein the separation angle (α

) is between 25° and

45°

.

8. The non-stick cooking container as in claim 1, wherein a cross-section of the ribs has a trapezoidal shape.

9. The non-stick cooking container as in claim 1, wherein a lateral wall of a rib and the bottom surface of an adjacent groove are connected by a rounded wall.

10. The non-stick cooking container as in claim 1, wherein a vertical distance (H) separating a highest point of the top surface a rib and a lowest point of the bottom surface of a groove is between 0.12 mm and 0.45 mm.

11. The non-stick cooking container as in claim 1, wherein the thickness of the non-stick coating on the bottom surface of a groove is greater than the thickness of the non-stick coating on the top surface of an adjacent rib.

12. The non-stick cooking container as in claim 1, wherein a vertical distance (H) separating a highest point of the top surface of a rib and a lowest point of the bottom surface of an adjacent groove is greater than the height difference (V) of the surface of the non-stick coating between the top surface of said rib and the bottom surface of said groove.

13. The non-stick cooking container as in claim 1, wherein a vertical distance (H) separating a highest point of the top surface of a rib and a lowest point of the bottom surface of an adjacent groove is greater than the thickness (R) of the non-stick coating on the bottom surface of said groove.

14. The non-stick cooking container as in claim 1, wherein the thickness of the non-stick coating is between 15 μ

m and 50 μ

m.

15. The non-stick cooking container as in claim 1, wherein a roughness (Ra) of the surface of the ribs is between 3 μ

m and 8 μ

m.

16. The non-stick cooking container as in claim 1, wherein the top surfaces of the ribs and lateral walls of the ribs have concavities configured so as to form a rough, concave space.

17. The non-stick cooking container as in claim 1, wherein an anodic oxidation layer is disposed between the surface of the ribs and grooves, and the non-stick coating.

18. The non-stick cooking container as in claim 17, wherein a thickness of the anodic oxidation layer is between 20 μ

m and 45 μ

m.

19. The non-stick cooking container as in claim 17, wherein a hardness of the anodic oxidation layer is between 150 Hv and 600 Hv.

20. The non-stick cooking container as in claim 1, wherein the container body is made of a die-cast aluminum alloy.

21. The non-stick cooking container as in claim 1, wherein the bottom surface of the grooves does not have any acute angles.

22. The non-stick cooking container as in claim 1, wherein the bottom surface of the grooves is cambered.

23. The non-stick cooking container as in claim 1, wherein the bottom surface of the grooves is concave.

24. The non-stick cooking container as in claim 1, wherein the ribs have two lateral walls connecting the top surface to the bottom surfaces of the adjacent grooves.

25. The non-stick cooking container as in claim 1, wherein a width at the bottom surface of the grooves is greater than the thickness of the non-stick coating on the bottom surface of the grooves.