# US 5,703,734 A · Disc drive having an integral gasket and continuous outer perimeter shock bumper

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- Number: US 5,703,734 A
- Document ID: US5703734A
- Status: Granted
- Kind: A
- Application number: 08/749,480
- Filed: 1996-11-13
- Granted: 1997-12-30
- Earliest claimed: 1994-10-12
- Assignees: International Business Machines Corporation
- Inventors: James William Berberich; Lowell James Berg; Zine-Eddine Boutaghou; John S. Heath; Jerry Lee Neubauer
- Web page: https://patentgrep.com/patent/US5703734A

## CPC

- G11B 25/043: {using rotating discs}
- G11B 33/08: Insulation or absorption of undesired vibrations or sounds
- G11B 33/10: Indicating arrangements; Warning arrangements {(G11B15/04, G11B19/04, G11B27/34, G11B27/36 take precedence)}
- Y10S 360/90: Disk drive packaging
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A disk drive has at least one disk for storing data and at least one transducer for reading or writing data to or from the disk. The transducer is attached to an actuator which positions the transducer with respect to the disk. The actuator includes a controllable motor which is used to move the actuator and the transducer attached thereto. The disk drive also includes a ramp for off loading the transducer or for parking the transducer off of the surface of the disk. The disk drive includes a combination shock absorber and gasket that has locking tabs to keep the combination shock absorber and gasket in place during a shock or impact loading event. The combination shock absorber and gasket also can be provided with additional extensions to lessen shocks caused by flat drops. Elastomeric blocks or pads can be provided on the cover and the base to lessen shocks caused by flat drops. The drive can also have rotatable elastomeric blocks that can rotate to a position above the disk drive to lessen shocks resulting from flat drops. The drive also is provided with a shock sensor which provides visual evidence that the drive has undergone a shock of a predetermined threshold. Another shock absorbing system uses a shroud around the connector on the disk drive.

## Claims

### Claim 1

A disk drive comprising:
a base;
at least one disk rotatably attached to said base;
an actuator rotatably attached to said base, said actuator further including a transducer located proximate one end of said actuator, said actuator positioning said transducer over said at least one disk in a transducing relationship with said at least one disk;
a cover attached to said base to form an enclosure for said at least one disk and said transducer, said enclosure having four sides, each of said four sides having a given height;
a connector associated with one of said four sides; and
a unitary gasket and outer perimeter shock bumper which extends between said base and said cover to form a continuous gasket at the joint between said base and said cover and which forms a continuous shock bumper around said enclosure, said shock bumper having a height equal to the height of at least three of said four sides of said enclosure such that an impact on a corner of said enclosure is absorbed by said unitary gasket and outer perimeter shock bumper, said corner being defined by two of said four sides and one of a top side and a bottom side of said enclosure.

### Claim 2 (depends on 1)

The disk drive according to claim 1, wherein said unitary gasket and outer perimeter shock bumper further comprises locking means to prevent the unitary gasket and outer perimeter shock bumper from being removed from the joint between said base and said cover.

### Claim 3 (depends on 1)

The disk drive according to claim 1, wherein said unitary gasket and outer perimeter shock bumper further comprises locking tabs located such that said locking tabs are inside the enclosure formed by said base and said cover.

### Claim 4 (depends on 1)

The disk drive according to claim 1, further including elastomeric bumpers mounted under said base and on top of said cover such that the impact of a flat drop of said disk drive may be absorbed.

### Claim 5 (depends on 1)

The disk drive according to claim 1, wherein said unitary gasket and outer perimeter shock bumper includes cutouts therein, said cutouts corresponding to a location of said at least one disk such that said at least one disk may rotate freely within said enclosure formed by said base and said cover.