US3810243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively tensioned transducer assembly for operation in compliant relation to individual memory discs of a partitionable aggregate of rotating flexible discs
Abstract A resiliently suspended magnetic transducer (head) with distinctive convex contours is positioned to form a hydrodynamic bearing relative to the surfaces of randomly selected object discs in a continuously rotating laminar assembly of several hundred flexible discs. The normally contiguous discs are spread partially open by flexure at randomly selected interfaces. The head operates in the work space formed by such flexure. When the spring tension on the head suspension is suitably adjusted (''''tuned'''') a hydrodynamically lubricated dimple intimately complementing the head contour forms in the rotational path of the object disc at head interface. The dimple displacement is generally greater than a disc thickness. A constant tension empirically determined enables the head to operate with satisfactory conformality and lubrication relative to all but a small number of end-positioned discs. By not using these end discs as working records the ''''TUNING-* tension may be preadjusted and maintained at a constant level. Alternately, the tension could be dynamically ''''tuned'''' or servoed to permit effective working operation relative to the end discs.
In an assembly of multiple laminarly arranged flexible magnetic storage discs co-rotating in a cylindrical configuration, wherein stable work spaces are formed at random disc interfaces to render object disc surfaces at said interfaces accessible for transducing access, improved transducing apparatus comprising: a resiliently suspended head mounted to be maneuverable in said work spaces adjacent said object disc surfaces; said head having selected contour and resilient tensioning relative to said discs such that said object disc is caused to trace a rotational path having a dimple therein which is distinctively contoured to a shape complementing the head contour at the area of rotational interface with said head and which is separated from said head by a hydrodynamically formed air film.
Claim 2
Dependent Claim
120 words
In an assembly of multiple laminarly arranged flexible magnetic storage discs co-rotating in a cylindrical configuration, wherein stable work spaces are formed at random disc interfaces to render object disc surfaces at said interfaces accessible for transducing access, improved transducing apparatus comprising: a resiliently suspended head mounted to be maneuverable in said work spaces adjacent said object disc surfaces; said head having selected contour and resilient tensioning relative to said discs such that said object disc is caused to trace a rotational path having a dimple therein which is distinctively contoured to a shape complementing the head contour at the area of rotational interface with said head and which is separated from said head by a hydrodynamically formed air film.
Claim 3
Dependent Claim
55 words
Transducing apparatus according to claim 1 wherein the object discs are rendered accessible by means deflecting a random-sized segment of discs away from the object disc leaving the object disc and all other discs not in said segment in undisturbed rotational orbits, and said head is maneuvered adjacent said object disc with selectively determined tension.
Claim 4
Dependent Claim
50 words
Transducing apparatus according to claim 1 wherein the discs are rendered accessible by means deflecting a random-sized segment of discs bounded by and containing the object disc, away from the complementary segment formed by all other discs and the head is maneuvered adjacent said object disc with selectively determined tension.
Claim 5
Dependent Claim
39 words
Apparatus according to claim 1 wherein said discs are substantially completely contiguous at all interfaces except the interface at which said work space is formed and wherein the disc interfacing said work space are partially separated and partially contiguous.