Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Generators or Motors

Rotary-voice-coil-micro-hard-disk-drive-system

Disk drive spindle air bearing with features to improve start-stop performance

The present invention relates to an air bearing structure for use in a disk drive device that ...

Rotational driving apparatus for disks having a magnet disposed on a motor mounting base surface to absorb radial deflections

The present invention is made to overcome the aforementioned problem. More precisely, it is an ...

Electormagnetic drive method and apparatus for driving a rotationally stabilized magnetically levitated object

The present invention is directed to further improvements in the aforesaid methods and apparatus ...

Electric motor with vibration attenuation

The present invention relates to an electric motor having a base and a stator connected with the ...

Rotary anode X-ray tube

What is claimed is: 1. An X-ray tube comprising: an envelope; a rotary anode in the envelope, said ...

Dynamic-pressure gas bearing structure and optical deflection scanning apparatus

It is, therefore, an object of the present invention to simplify the shape of the peripheral ...

Levitation pressure and friction losses in superconducting bearings

It is therefore an object of the invention to provide an improved low loss high-temperature ...

Method and apparatus for securing a conduit box to a motor and motor incorporating same

The invention provides a novel approach to securing a conduit box to an electric motor designed to ...

Pumps and motors

What is claimed is: 1. A pump or motor comprising a casing, which houses at least one rotary member ...

Vane pump with pressure chambers at the outlet to reduce noise

OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described ...

Rotary voice coil micro-hard disk drive system

Details

Inventors: Chalmers, Brian D.; Mackenzie, Colin A.; Kapoor, Kishore K.;
Assignee: Rodime PLC (GB)
Primary Examiner: Faber; Alan
Assistant Examiner: Garland; Steven R.
Attorney, Agent or Firm: Mason, Fenwick & Lawrence

A very high capacity, closed-loop Winchester disk drive system particularly suited to meet the demands of a portable computer system is disclosed. The micro-Winchester disk is a Winchester disk of 95 mm in diameter. The disk drive system of the present invention, by virtue of its small size and vibration isolation, is ideally suited for use in portable computer systems. The micro-Winchester disk drive system was developed to store data at a density in excess of 1000 tracks per inch utilizing a closed-loop rotary voice coil positioning mechanism. This disk drive system provides fast access data storage for use with small business computers, terminals and microprocessor-based systems, portable or otherwise, and many other areas where compact, rugged, and lightweight hard disk storage is required. The disk drive system of the present invention normally utilizes between two and four hard disks, such as Winchester disks, with one disk containing a dedicated servo surface. The drive system provides data storage of between about 21 and 50 Megabytes, once the disks are formatted.

DETAILED DESCRIPTION It is an object of the present invention to provide a compact micro-hard disk drive system having a high performance capability.
Another object of the present invention is to provide an improved hard disk drive system in which the size, weight, sensitivity to vibrations, power consumption and heat dissipation are minimized without sacrificing high performance capabilities, thereby rendering the system particularly advantageous for use in portable computing systems.
Still another object of the present invention is to provide a micro-Winchester disk drive with a closed-loop positioning system capable of providing performance parameters comparable to those of 51/4 inch Winchester disk drives and greater than those of existing 31/2" Winchester disk drives.
A further object of the present invention is to provide a micro-Winchester disk drive system that affords storage capacity of at least approximately 9 megabytes per disk surface in its unformatted configuration and at least approximately 7 megabytes per disk surface in its formatted configuration.
A still further object of the present invention is to provide a micro-Winchester disk drive system that is electrically compatible with 51/2 inch disk drives in its interface to host computer systems.
A still further object of the present invention is to provide a micro-hard disk drive system in which the disk housing assembly is formed of two clamshell-shaped housing portions and in which the spindles which carry the positioning mechanism and the spindle motor are fixed thereto.
It is still a further object of the present invention to provide a micro-Winchester disk drive system having a maximum of four disks and an in-hub spindle motor in which a rotary voice coil positioning mechanism is utilized to achieve a high track density.
Another object of the present invention is to provide a micro-Winchester disk drive system in which data is stored at a density of approximately 1040 tracks per inch.
The micro-Winchester disk drive system of the present invention was developed to provide a disk drive system particularly suited to meet the high storage demands of personal computer systems

Related patents

	Magnetic fluid seal apparatus An object, therefore, of the present invention is to provide a magnetic fluid seal apparatus that is free from all of the aforementioned defects of the prior art....
	Disk driving motor In view of the foregoing, an object of the invention is to provide a disk driving motor in which the flow of dust or the like is blocked which comes from the lower ...
	Disc drive actuator arm assembly with outer arm z-height less than inner arm z-height An objective of the present invention is to achieve uniform gram load on the sliders throughout the actuator stack. Another objective of the present invention is to ...
	Brushless motor It is therefore a first object of the present invention to provide a motor in which it is possible to reduce the aforementioned torque ripples. It is a second object of ...
	Antifriction device for a valve control shaft What is claimed is: 1. An antifriction device for a valve which serves to regulate the flow of a fluid and especially to withstand high pressures and temperatures, ...
	Spring retainer for limited slip differentials This invention overcomes the problem of possible spring plate retainer failure by providing a retainer plate which is capable of resisting bending loads exerted by the ...
	Directly solderable auxiliary circuit board assembly and methods of making and using the same The present invention includes a main circuit T board which has an auxiliary board directly connected thereto without the use of interfacing terminals. The auxiliary ...
	Module mounting structure It is therefore an object of the present invention to provide a module mounting structure adaptive to an increase in the number of pins of a daughter board and an ...
	Rotor end cap Briefly, apparatus of the invention provides a rotor end cap for use with a rotor of a dynamoelectric machine to induce cooling air circulation, facilitate rotor ...
	Modular conveyor system having multiple moving elements under independent control OF PREFERRED EMBODIMENTS FIG. 1 illustrates a portion of a modular conveyor system 20, in accordance with the preferred embodiment. The system 20 features multiple ...

0.004
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved