Information recording apparatus with a liquid bearing
AssigneeConner Peripherals, Inc.
InventorsJames U. Lemke, William W. French, William B. McHargue
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Abstract
An information storage apparatus is disclosed for reading and/or writing information on a rigid storage medium which includes a liquid bearing interface between the transducer and medium instead of a conventional air bearing. The liquid is a fluorocarbon which has stable, self-lubricating, viscous and high-density properties. In an exemplary embodiment of a cockpit voice recorder/flight data recorder, low-density metallic components or composite parts of the rigid magnetic disk drive assembly with essentially the same density as the liquid achieve a near zero buoyancy configuration that obviates the effects of vibration and acceleration.
Claims10
A recording apparatus, which operates in an external environment for receiving and storing information and for preserving said stored information in a catastrophic environment, said recording apparatus comprising:
- a monolithic cartridge enclosing an interior;
- a disk chamber formed within said interior;
- a magnetic recording system in said disk chamber, said magnetic recording system including a movable, rigid disk for receiving and storing information;
- a relatively incompressible, magnetically inert, and non-flammable liquid entirely filling said disk chamber and submerging said magnetic recording apparatus;
- a expansion chamber also formed within said interior, said expansion chamber adjacent to the disk chamber, sealed from the external environment, and having substantially fixed dimensions;
- and
- means coupling said expansion chamber to said disk chamber for controlling the transfer of portions of said liquid thereinbetween in response to external thermal effects induced expansion and contraction of the volume of said liquid.
Dependencies are inferred from the claim text.