Back to results
US 7,096,480 B2Granted
Data storage disk capable of limiting extension of crack
AssigneeBenq Corporation
InventorCheng-Chieh Chuang
Life of this patent
Estimating the term…
Abstract
A data storage disk capable of limiting a crack from extending during operation is provided. The data storage disk has a center, an outer edge, an inner edge, and at least one slot. The slot is disposed between the outer edge and the inner edge. When a crack occurs in the disk, the slot disperses a stress which forces the crack to extend. Therefore, the slot hinders extension of the crack to prevent the disk from break.
Claims18
A data storage disk having a center, comprising:
- a data storage portion between an outer edge and an intermediate boundary;
- a non-recording portion between said intermediate boundary and an inner edge;
- and
- at least one slot disposed between said intermediate boundary and said inner edge;
- wherein said slot hinders an extension to a crack occurred in said data storage disk and wherein a distance between an inner sidewall of said slot and the center of the data storage disk is larger than the radius of said inner edge.
2 more elements
A data storage disk, comprising:
- a center hollow portion;
- a data storage portion between an outer edge and an intermediate boundary;
- a non-recording portion disposed between said center hollow portion and said data storage portion;
- and
- at least one slot disposed in said non-recording portion;
- wherein said slot hinders an extension to a crack occurred in said data storage disk, and
- wherein a distance between an inner sidewall of said slot and the center of the data storage disk is larger than the radius of said inner edge, and a distance between an outer sidewall of said slot and the center of the data storage disk is smaller than the radius of said intermediate boundary.
4 more elements
A data storage disk having a center, comprising:
- an outer edge;
- an inner edge;
- a data storage region disposed between said outer edge and an intermediate boundary;
- and
- at least one slot disposed between said data storage region and said inner edge;
- wherein said slot hinders an extension to said crack occurred in said data storage disk, and
- wherein a distance between an inner sidewall of said slot and the center of the data storage disk is larger than the radius of said inner edge, and a distance between a outer sidewall of said slot and the center of the data storage disk is smaller than the radius of said intermediate boundary.
4 more elements
Dependencies are inferred from the claim text.