Constant gap extended wear magnetic tape head

Claim 2

A magnetic transducer for magnetic tape movable along a defined path, comprising: a. a fixed pole member adapted to receive magnetic tape thereagainst, b. a first gap surface on said fixed pole member adjacent and substantially perpendicular to the tape path, c. a movable pole member adjacent said fixed pole member and adapted to interface with the magnetic tape, d. a second gap surface on said movable pole member opposite and movable toward and away from said first gap surface, said second gap surface being adjacent the tape and substantially perpendicular thereto near the junction therewith, said second gap surface tapering away from said first gap surface at an acute angle to limit the effective magnetic gap separation during flux saturation, and e. a means urging said movable pole member toward said fixed pole member.

Claim 3

The transducer of claim 1 further comprising a non-magnetic gap material disposed between said first and said second gap surfaces to maintain a predetermined gap dimension.

Claim 4

The transducer of claim 1 wherein said pole members receive the tape against extended portions thereof to minimize wear adjacent the gap surfaces when the tape is moved therepast.

Claim 5

The transducer of claim 1 further comprising: a. a rear receiving surface on said fixed pole member for receiving said movable pole member in contacting relation, and b. a rear contacting surface on said movable pole member in contact with said receiving surface and having a curvature thereon allowing said movable member to rotate against said fixed member while maintaining said gap surfaces in alignment and while maintaining a closed flux path between said rear surfaces.

Claim 6

The transducer of claim 4 wherein said rear receiving surface is substantially flat and said rear conTacting surface is generally convex.

Claim 7

The transducer of claim 4 further comprising a means for preventing vertical movement between said pole members.

Claim 8

The transducer of claim 4 wherein said pole members receive the tape against extended portions thereof to minimize wear adjacent the gap surfaces when the tape is moved therepast.

Claim 9

A magnetic transducer for magnetic tape movable along a defined path, comprising: a. a fixed pole member adapted to receive magnetic tape against an extended portion thereof, b. a first gap surface on said fixed pole member adjacent and substantially perpendicular to the tape path, c. a movable pole member adjacent said fixed pole member and adapted to interface with the magnetic tape and to receive the tape against an extended portion thereof, d. a second gap surface on said movable pole member opposite and movable toward and away from said first gap surface, said second gap surface being adjacent the tape and substantially perpendicular thereto near the junction therewith, said second gap surface tapering away from said first gap surface at an acute angle to limit the effective magnetic gap separation during flux saturation, the extended portions of said pole members minimizing wear adjacent the gap surfaces when the tape is moved therepast, e. a substantially flat rear receiving surface on said fixed pole member for receiving said movable pole member in contacting relation, f. a generally convex rear contacting surface on said movable pole member in contact with said receiving surface and having a curvature thereon allowing said movable member to rotate against said fixed member while maintaining said gap surfaces in alignment and while maintaining a closed flux path between said rear surfaces, and g. a means urging said movable pole member toward said fixed pole member.

Claim 10

A magnetic transducer for magnetic tape movable along a defined path, comprising: a. a fixed pole member adapted to receive magnetic tape against an extended portion thereof, b. a first gap surface on said fixed pole member adjacent and substantially perpendicular to the tape path, c. a movable pole member adjacent said fixed pole member and adapted to interface with the magnetic tape and to receive the tape against an extended portion thereof, d. a second gap surface on said movable pole member opposite and movable toward and away from said first gap surface, said second gap surface being adjacent the tape and substantially perpendicular thereto near the junction therewith, said second gap surface tapering away from said first gap surface at an acute angle to limit the effective magnetic gap separation during flux saturation, the extended portions of said pole members minimizing wear adjacent the gap surfaces when the tape is moved therepast, e. a substantially flat rear receiving surface on said fixed pole member for receiving said movable pole member in contacting relation, f. a generally convex rear contacting surface on said movable pole member in contact with said receiving surface and having a curvature thereon allowing said movable member to rotate against said fixed member while maintaining said gap surfaces in alignment and while maintaining a closed flux path between said rear surfaces, and g. a means urging said movable pole member toward said fixed pole member.

Claim 11

The transducer of claim 8 further comprising a non-magnetic gap material disposed between said first and said second gap surfaces to maintain a predetermined gap dimension.