Slider assembly for supporting a magnetic head

• US 4,757,402 A
• Filed: 10/03/1986
• Issued: 07/12/1988
• Est. Priority Date: 10/03/1986
• Status: Expired due to Term

• Current Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Original Assignee: Censtor Corp.
• Inventors: Mo, Frank S. C.
• Primary Examiner(s): Heinz, A. J.
• Application Number:
  US06/914,996
• Time in Patent Office: 648 Days
• Field of Search: 360/103, 360/102
• US Class Current: 360/235.4
• CPC Class Codes: G11B 21/21 with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider
• CPC Class Codes: G11B 5/1871 Shaping or contouring of the transducing or guiding surface
• CPC Class Codes: G11B 5/6005 Specially adapted for spacing from a rotating disc using a fluid cushion

Abstract

A magnetic head assembly including a slider (15) for supporting a magnetic transducer (12) adjacent the surface of a recording media (14) on an air film, said slider including an air bearing member (26) having a peripheral wall (38) extending toward said media and presenting a substantially equal cross sectional area to the air film moving with the media as the head is skewed slightly relative to the oncoming air film.

Claims

1. A magnetic head slider for supporting a magnetic transducer adjacent the surface of a recording media on an air film flowing in the general direction of relative motion between the magnetic head and the media, said slider comprising:

a body member having a front and sides,

means to support the magnetic head on said body member,

air bearing means for maintaining said body member a predetermined flying height from said media surface with relative motion between said slider and media, comprising;

a plurality of air bearing members fixed to said body member and having a configuration including a peripheral wall extending toward the media and terminating at an air bearing surface formed with a first portion extending generally parallel to said media surface to create an air bearing for supporting the slider in spaced relationship from said media surface, and

said air bearing member peripheral walls being shaped to present a substantially equal cross sectional area to oncoming air film approaching from directly in front of said slider or from the front and side direction thereto to limit any change in lift due to skewing of the slider relative to the air film flow direction.

2. A magnetic head slider for supporting a magnetic transducer adjacent the surface of a recording media on an air film flowing in the general direction of relative motion between the magnetic head and the media, spaced from the surface of said slider comprising:

a body member,

means to support the magnetic head on said body member, and

an air bearing means for creating a lift effect and maintaining said body member at a predetermined flying height relative to said media surface with relative motion between the media and body member and as the body member is skewed relative to recording media, comprising;

a plurality of air bearing members each having a configuration including peripheral wall members extending from the body member towards the media and terminating at an air bearing surface formed with a first portion extending parallel to the media surface to create an air bearing for supporting the slider in spaced relationship relative to the media surface,

at least some of said air bearing members being positioned to create a substantial lifting effect to maintain the slider at a predetermined distance from and at a predetermined attitude relative to the media surface, and

those air bearing members positioned to create a substantial lift effect being formed to present no change of the cross sectional area of the bearing members to the air film as the slider is skewed relative thereto.

3. A magnetic head slider as defined in claim 2 wherein said air bearing members are all cylindrical in configuration.