Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1984-05-04
1986-11-11
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 555, G11B 2108
Patent
active
046226095
ABSTRACT:
An apparatus for positioning the sets of read/write heads of an information storage disk that is a completely sealed unit with its own connecting cable and mounting apparatus. The apparatus includes a carrier connected through a slot in the sidewall of a tubular stator to a cylindrical armature. The carrier is driven axially along the outside of the stator as the armature moves axially inside the stator to position sets of read/write heads that may be attached to the carrier in their desired position with respect to an information storage disk. The armature is connected to the carrier by pins. The surface of the carrier facing the stator has a concave contour to match the exterior surface of the stator and extends beyond the stator slot a sufficient amount to completely close the stator slot no matter what the axial position of the carrier. A projection extends from the concave surface of the carrier into the slot, and the lateral edges of the projection form bumpers for the carrier. The armature and carrier are slotted to provide easy access for armature wiring which extends through the carrier and connects to a cable connected to the carrier at a point spaced apart from the stator.
REFERENCES:
patent: Re27289 (1972-02-01), Sawyer
patent: Re27436 (1972-07-01), Sawyer
patent: 3543060 (1970-11-01), Holmes
patent: 3656015 (1972-04-01), Gillum
patent: 3666977 (1972-05-01), Helms
patent: 3869625 (1975-03-01), Sawyer
patent: 4215283 (1980-07-01), Hinds
patent: 4286180 (1981-08-01), Langley
patent: 4344022 (1982-08-01), Heide
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