What is claimed is:
1. A hybrid air foil journal bearing supporting a shaft by air layer formed between inner surface of the housing thereof and the shaft, wherein said bearing comprising:
a plurality of key slots formed on the surface of the bearing housing, which are spaced apart from each other at a certain distance;
a plurality of hybrid air foils formed as a body to have a high stiffness and a high resiliency supporting said shaft, which are correspondingly fixed at said key slots.
2. The hybrid air foil journal bearing according to claim 1, wherein said hybrid air foil comprising:
a bump foil having said stiffness;
a multi-leaf foil having said resiliency connected with an end of the bump foil; and
a fixing unit formed at the other end of said bump foil.
3. The hybrid air foil journal bearing according to claim 2, wherein said multi-leaf foil of said hybrid air foil overlapping another multi-leaf foil of hybrid air foil by a certain area and supporting said rotating shaft together with said another multi-leaf foil of hybrid air foil.
4. The hybrid air foil journal bearing according to claim 2, wherein said multi-leaf foil increasing a reducing force by Coulomb friction generated at overlapped part between said multi-leaf foils of said hybrid air foils and at contact parts between said multi-leaf foil and said bump foil.
5. The hybrid air foil journal bearing according to claim 2, wherein said bump foil supporting said multi-leaf foil to radial direction of said shaft.
6. The hybrid air foil journal bearing according to claim 2, wherein said bump foil having a plurality of convex bodies by a certain distance therebetween and a flat part among said convex bodies.
7. The hybrid air foil journal bearing according to claim 6, wherein said convex bodies comprise half spheres or wave form bodies.
8. The hybrid air foil journal bearing according to claim 6, wherein said multi-leaf foil generating a hydrodynamic pressure by its own elastic deformation between tops of said half spheres of said bump foils when said rotating shaft is loaded highly and rotates.
9. A manufacturing method of hybrid air foil of a hybrid air foil journal bearing, wherein the method comprising the steps of:
forming a foil having a multi-leaf type and a bump type by pressing the foil with a press die mold;
forming a fixing unit at an end of the bump type foil, which shaped as corresponding to a shape of the key slot of the journal bearing housing; and
bending a part between the bump type foil and a multi-leaf type foil.
10. The manufacturing method of hybrid air foil according to claim 9, wherein said press die mold is previously manufactured as a prototype of the multi-leaf type foil and the bump type foil.
11. The manufacturing method of hybrid air foil according to claim 9, wherein said fixing unit of the hybrid air foil is fixed at the slot in the interior portion of the hybrid air foil.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An identification tag comprising:
a metal body including oppositely disposed first and second sides;
an aperture in the body, extending through the body, the aperture including at least one inner edge; and
a device responsive to electronic signals within the aperture and positioned in the aperture by an adhesive material that fixes the device in position in the aperture and maintains the device from contacting the at least one inner edge of the aperture, the device being accessible to electronic signals on the oppositely disposed first and second sides of the body.
2. The identification tag of claim 1, wherein the metal body includes sheet metal.
3. The identification tag of claim 1, wherein the aperture is of a circular shape and the at least one inner edge includes a single edge.
4. The identification tag of claim 1, wherein the aperture is of a star-like shape and the at least one inner edge includes a plurality of inner edges corresponding to the segments defining the star-like shape.
5. The identification tag of claim 4, wherein the star-like shape includes a twelve pointed star.
6. The identification tag of claim 1, wherein the thickness of the body corresponds substantially to the thickness of the device.
7. The identification tag of claim 1, wherein the device includes at least one Radio Frequency Identification (RFID) chip.
8. The identification tag of claim 1, wherein at least one side of the body includes an area configured for accommodating indicia applied to the tag by techniques selected from the group consisting of printing and etching.
9. The identification tag of claim 1, wherein the adhesive material includes an insulating material that permits the transmission of electronic signals therethrough.
10. The identification tag of claim 1, wherein the spacer material includes a resin.
11. An identification tag comprising:
a metal body including oppositely disposed first and second sides;
an aperture in the body, extending through the body, the aperture including at least one inner edge; and
a device responsive to electronic signals within the aperture and positioned in the aperture by an adhesive material that fixes the device in position in the aperture and maintains the device from contacting the at least one inner edge of the aperture, and the thickness of the device corresponds substantially to the thickness of the body.
12. The identification tag of claim 11, wherein the device is positioned in the aperture to be accessible to electronic signals on the oppositely disposed first and second sides of the body.
13. The identification tag of claim 11, wherein the metal body includes sheet metal.
14. The identification tag of claim 11, wherein the aperture is of a circular shape and the at least one inner edge includes a single edge.
15. The identification tag of claim 11, wherein the aperture is of a star-like shape and the at least one inner edge includes a plurality of inner edges corresponding to the segments defining the star-like shape.
16. The identification tag of claim 15, wherein the star-like shape includes a twelve pointed star.
17. The identification tag of claim 12, wherein the device includes at least one Radio Frequency Identification (RFID) chip.
18. The identification tag of claim 11, wherein at least one side of the body includes an area configured for accommodating indicia applied to the tag by techniques selected from the group consisting of printing and etching.
19. The identification tag of claim 11, wherein the adhesive material includes an insulating material that permits the transmission of electronic signals therethrough.
20. The identification tag of claim 11, wherein the adhesive material includes a resin.
21. A method for making an identification tag comprising:
providing at least one metal body with oppositely disposed upper and lower surfaces:
making an aperture in the at least one metal body, the aperture extending through the at least one metal body;
placing a device responsive to electronic signals within the aperture;
maintaining the device so as to be substantially coplanar with the upper and lower surfaces; and,
filling the aperture with material that allows for the passage of electronic signals therethrough to fasten the device in place such that the device is out of contact with the edges of the aperture and that the device is accessible to electronic signals on both sides of the at least one metal body.
22. The method of claim 21, additionally comprising, providing a backing over at least one surface of the metal body and maintaining the device so as to be substantially coplanar with the upper and lower surfaces includes placing the device within the aperture over the backing.
23. The method of claim 22, additionally comprising removing the backing.
24. The method of claim 21, wherein providing the at least one metal body includes providing a metal sheet for accommodating the at least one metal body.
25. The method of claim 24, wherein the at least one metal body includes a plurality of metal bodies.
26. The method of claim 21, wherein making an aperture includes cutting a star-shaped aperture in the at least one metal body.
27. The method of claim 26, wherein the star-shaped aperture is a twelve pointed star shape.
28. The method of claim 21, wherein the device includes a radio frequency identification chip.
29. The method of claim 21, wherein filling the aperture with a material includes filling the aperture with an adhesive material.
30. The method of claim 29, wherein the material includes a resin.
30. The method of claim 29, wherein the resin is an ultraviolet curable resin and the method additionally includes curing the resin to harden and fix the device in place.