Head suspension assembly for a data storage device
AssigneeSeagate Technology LLC
InventorsZine-Eddine Boutaghou, Aric Kumaran Menon
Life of this patent
Estimating the term…
Abstract
A head suspension assembly including a head and a suspension coupled to the head to support the head to fly above the disc surface for operation. The head includes a slider having a bearing surface and a transducer having a transducer element. The suspension supports the head at a pitch angle determined so that close point between the head and disc surface is located at the slider spaced from the transducer. In one embodiment of the head suspension, the suspension supports the head during operation at a pitch angle θP≦(dR−dW)/dA-B−4 dC/l to avoid transducer contact with media asperities with mean roughness.
Claims12
A head suspension assembly comprising:
- a head including:
- a slider including an upper surface and a lower bearing surface, a leading edge and a trailing edge;
- a transducer supported relative to the trailing edge of the slider and recessed a distance dR from the slider and the transducer including an elongated extent dA-B extending between a leading edge and a trailing edge of the transducer and the transducer including a transducer element supported along the elongated extent dA-B;
- and
- a suspension assembly coupled to the head to support the head relative to a disc surface, said suspension assembly being adapted to support the head at a pitch angle relative to the disc surface so that a close point between the head and the disc surface is located at the slider spaced from the transducer and a height hB of the trailing edge of the transducer from the disc surface and a height hA of the trailing edge of the slider from the disc surface satisfies the relation hB≧hA so that the slider provides a contact interface between the head and the disc surface.
A method for constructing a head suspension assembly for supporting a head relative to a disc surface comprising the steps of:
- providing a head including a slider having a leading edge, a trailing edge, and a bearing surface, the slider supporting a transducer at the trailing edge of the slider and the transducer recessed a distance dR from the slider and the transducer including an elongated extent having a distance dA-B extending between a leading edge and a trailing edge of the transducer and the transducer including a transducer element along the elongated extent dA-B;
- calculating a pitch angle for the head so that a contact interface for the head and the disc surface is at the slider spaced from the transducer and a height hB of the trailing edge of the transducer from the disc surface and a height hA of the trailing edge of the slider from the disc surface satisfies the relation hB≧hA;
- and
- coupling the head to a suspension assembly to support the head at the calculated pitch angle to form the head suspension assembly.
Dependencies are inferred from the claim text.