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Browse Prior Art Database

Stabilized Wasp Waist Head

IP.com Disclosure Number: IPCOM000086777D
Original Publication Date: 1976-Oct-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Nelson, GN: AUTHOR [+3]

Abstract

Magnetic head 1 is spherically contoured and slotted so as to form a stable air bearing with a flexible magnetic medium, e.g., a disk, movable relative to the head. The head is of approximately half-inch radius and has two slots machined in it to form a center rail 2 with outriggers 3. The center rail 2 is further chamfered at an angle alpha of typically 30 degrees to form a "wasp-waist" region 4 in which one or more transducing elements may be located. Other angles are possible.

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Stabilized Wasp Waist Head

Magnetic head 1 is spherically contoured and slotted so as to form a stable air bearing with a flexible magnetic medium, e.g., a disk, movable relative to the head. The head is of approximately half-inch radius and has two slots machined in it to form a center rail 2 with outriggers 3. The center rail 2 is further chamfered at an angle alpha of typically 30 degrees to form a "wasp-waist" region 4 in which one or more transducing elements may be located. Other angles are possible.

The flying height of the head is largely determined by the area and width of the center rail air bearing surface and thus by the angle of chamfer. Stability of the air bearing over the waist region 4 of the center rail is provided by outriggers
3.

In operation, the head protrudes into the medium to form a bulge. Motion of the medium over the head is parallel to the center rail. Flying heights of the order of 10 microinches have been achieved which are relatively independent of medium velocity and of the degree of protrusion of the head into the tape.

Instead of spherical contouring, complex or double radius head curvatures could also be employed.

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