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US 6,987,643 B1Granted
Pole structure to relieve adjacent track writing
AssigneeWestern Digital (Fremont), LLC
InventorDavid John Seagle
Life of this patent
Estimating the term…
Abstract
A method and system for providing a pedestal defined zero throat write head is disclosed. The method and system include providing a first pole having a pedestal, a second pole and a gap separating the pedestal of the first pole from a portion of the second pole. The pedestal has a front, a back and a notch. The gap has a first portion and a second portion. The first portion of the gap is in proximity to front of the pedestal. The second portion of the gap is in proximity to the back of the pedestal. The first portion of the gap is thinner than the second portion of the gap.
Claims8
A pedestal defined zero throat write head comprising:
- a first pole having a pedestal, the pedestal including a notch, the notch having a front and a back;
- a second pole;
- a gap separating the notch of the first pole from a portion of the second pole, the gap having a first portion and a second portion, the first portion of the gap being between the front of the notch and the second pole, the second portion of the gap being between the back of the notch and the second pole, the first portion of the gap being thinner than the second portion of the gap;
- wherein the second portion of the gap has a top and a bottom, the top of the second portion of the gap being substantially parallel to the bottom of the second portion of the gap.
1 more element
pedestal defined zero throat write head comprising:
- a first pole having a pedestal, the pedestal including a notch, the pedestal having a front and a back;
- a second pole;
- a gap separating the notch of the first pole from a portion of the second pole, the gap having a first portion and a second portion, the first portion of the gap being in proximity to the front of the pedestal, the second portion of the gap being in proximity to the back of the pedestal, the first portion of the gap being thinner than the second portion of the gap;
- wherein the second portion of the gap has a top and a bottom, the top of the second portion of the gap being substantially parallel to the bottom of the second portion of the gap;
- wherein the notch further includes a top along the gap, the top of the notch being recessed along the second portion of the gap.
2 more elements
A pedestal defined zero throat write head comprising:
- a first pole having a pedestal, the pedestal including a notch, the pedestal having a front and a back;
- a second pole;
- a gap separating the notch of the first pole from a portion of the second pole, the gap having a first portion and a second portion, the first portion of the gap being in proximity to the front of the pedestal, the second portion of the gap being in proximity to the back of the pedestal, the first portion of the gap being thinner than the second portion of the gap;
- wherein the second portion of the gap has a top and a bottom, the top of the second portion of the gap being substantially parallel to the bottom of the second portion of the gap;
- wherein the second pole includes a bottom interface along the gap, the bottom of the second pole being recessed along the second portion of the gap.
2 more elements
A pedestal defined zero throat write head comprising:
- a first pole having a pedestal, the pedestal including a notch, the pedestal having a front and a back;
- a second pole;
- a gap separating the notch of the first pole from a portion of the second pole, the gap having a first portion and a second portion, the first portion of the gap being in proximity to the front of the pedestal, the second portion of the gap being in proximity to the back of the pedestal, the first portion of the gap being thinner than the second portion of the gap;
- wherein the second portion of the gap has a top and a bottom, the top of the second portion of the gap being substantially parallel to the bottom of the second portion of the gap;
- wherein the notch further includes a top along the gap and the second pole includes a bottom along the gap, the top of the notch and the bottom of the second pole being recessed at the second portion of the gap.
2 more elements
A pedestal defined zero throat write head comprising:
- a first pole having a pedestal, the pedestal including a notch, the pedestal having a front and a back;
- a second pole;
- a gap separating the notch of the first pole from a portion of the second pole, the gap having a first portion and a second portion, the first portion of the gap being in proximity to the front of the pedestal, the second portion of the gap being in proximity to the back of the pedestal, the first portion of the gap being thinner than the second portion of the gap;
- wherein the second portion of the gap has a top and a bottom, the top of the second portion of the gap being substantially parallel to the bottom of the second portion of the gap;
- wherein the first portion of the gap has a first top and wherein the top of the second portion of the gap is substantially parallel to the first top.
2 more elements
Dependencies are inferred from the claim text.