Air bearing multi-channel magnetic head assembly

Claim 2

An air bearing multi-channel magnetic head assembly comprising: a unitary core structure including a base structure lying in a predetermined back plane, said core structure including a plurality of pairs of ferrite core legs spaced regularly apart along a gap defining plane lying substantially normal to said back plane, and terminating in flat surfaces lying in a common plane substantially normal to said legs; individual coil means wound about at least one leg of each pair; a plurality of gap-defining bar elements of magnetic material, each including a pair of coplanar flat surfaces, and each bridging a different pair of core legs, with the coplanar flat surfaces lying flush with the terminating surfaces of said core legs, and each including a non-magnetic spacer means in said gap plane; and an aerodynamic element having a curved surface indluding a plurality of longitudinal slots disposed at regular spaces corresponding to the core legs, a different bar element being mounted in and exposed through each slot.

Claim 3

The invention as set forth in claim 1 above, wherein said gap defining bar elements include a gap defining groove in one of said coplanar flat surfaces for each of said bar elements.

Claim 4

The invention as set forth in claim 1 above, wherein adhesive means couples each of said bar elements to the associated proximate surfaces of the slots in said aerodynamic element.

Claim 5

The invention as set forth in claim 1 above, wherein the bar elements have thicknesses such that they are generally continuous with the aerodynamic element.

Claim 6

The invention as set forth in claim 1 above, including in addition a circuit board element coupled to said base structure along said back plane and including circuit means coupled to the coil means.

Claim 7

The invention as set forth in claim 5 above, wherein said circuit board means comprises a plurality of selection diodes, and conductor means coupling said coil means and said selection diodes to an output terminal.

Claim 8

An air bearing multi-channel magnetic head assembly comprising: a nonmagnetic ferrite backing slab having a reference surface lying in a first plane; a plurality of generally U-shaped magnetic ferrite core members, each including a rectangular base and a pair of spaced apart rectangular legs extending perpendicularly therefrom, the bases of said core members being attached to said backing slab and said core members being spaced apart along a second plane normal to said first plane, said legs terminating in planar surfaces lying in a third plane parallel to said first plane; a plurality of coil means, each coil means being disposed about a different leg of said core members, there being at least one coil means per pair of legs; a plurality of substantially rectangular pole tip elements of relatively hard surfaced magnetic material having relatively low circuitry, each bridging a different pair of core legs, each of said pole tip elements including planar surfaces lying flush with the planar surfaces of said core legs and being attached thereto, said pole tip elements each including a non-magnetic Havar spacer gap lying substantially parallel to said second plane, and having at least one gap wall lying in a common plane; an air bearing element including a plurality of slots, said air bearing element being substantially coplanar with said pole tip elements and each slot substantially encompassing a different pole tip element; and epoxy means affixing each of said pole tip elements to the inner periphery of the associated slot.

Claim 9

An air bearing multi-channel magnetic head assembly comprising: a nonmagnetic ferrite backing slab having a reference surface lying in a first plane; a plurality of generally U-shaped magnetic ferrite core members, each including a rectangular base and a pair of spaced apart rectangular legs extending perpendicularly therefrom, the bases of said core members being attached to said backing slab and said core members being spaced apart along a second plane normal to said first plane, said legs terminating in planar surfaces lying in a third plane parallel to said first plane; a plurality of coil means, each coil means being disposed about a different leg of said core members, there being at least one coil means per pair of legs; a plurality of substantially rectangular pole tip elements of relatively hard surfaced magnetic material having relatively low circuitry, each bridging a different pair of core legs, each of said pole tip elements including planar surfaces lying flush with the planar surfaces of said core legs and being attached thereto, said pole tip elements each including a non-magnetic Havar spacer gap lying substantially parallel to said second plane, and having at least one gap wall lying in a common plane; an air bearing element including a plurality of slots, said air bearing element being substantially coplanar with said pole tip elements and each slot substantially encompassing a different pole tip element; and epoxy means affixing each of said pole tip elements to the inner periphery of the associated slot.