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US4851943A Expired / Lapsed US ⏱️ 0.0 years remaining

Disk drive assembly tool

Assignee: Maxtor Corp
•
Filing: 1988-03-21
•
Granted: 1989-07-25
•
Expires: 2008-03-21
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Abstract

Abstract An improved head loader is disclosed for use in assembling hard disk drives to permit the placement of magnetic heads over desired tracks of the magnetic disks. The loader includes a main frame, through which is disposed a shaft. The shaft passes through the frame and is secured to a positioning piece which includes an upwardly extending guide pin, and a downwardly extending positioning pin. A guide piece having a plurality of guides is rigidly attached to the frame. In operation, spreading blades pass through the guides and separate the magnetic heads on an actuator arm to permit the movement of the actuator arm to a position over desired areas of the magnetic disks, without the magnetic heads contacting the disks and causing damage. The loader is configured such that a user inserts the positioning pin through concentric holes in the actuator arm, and places a nub which is the remaining portion of the shaft passing through the positioning piece, into another triangular orifice in the uppermost arm comprising the actuator arm. The user first swings the loader into place by pressing against the handle maintaining his grip on the handle and then rotating it. The spreading blades are then forced through the guide over a nylon roller such that they diverge at an angle. The structure of the present invention is such that once properly positioned, the diverging blades contact flexible arms carrying the magnetic heads on the actuator arm. The blades force adjacent flexible arms to come in contact with one another, and thereby spread the magnetic heads. The assembler may then rotate the actuator arm until the magnetic heads are disposed over a desired position on the magnetic disks. By counterrotating the handle, the spreading blades are retracted back into the guides and the loader is returned to its initial position, such that it can be removed from the actuator arm.

Inventors

  • 👤 Donald S. Perry

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 15:15
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/10; G11B5/105; G11B5/48; G11B5/4806; G11B5/4813; G11B5/40

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 209 words
A device for lifting magnetic heads disposed on flexible arms of a movable actuator assembly of a disk drive, said disk drive having a plurality of disks, said device comprising: a main frame and a means for removably mounting said frame on said assembly; lifting means for lifting said magnetic heads away from said disks; positioning means for positioning said lifting means adjacent to said flexible arms, said positioning means being moveably attached to said frame and comprising a plurality of guides adopted to fit between said disks, such that there is at least one guide between each adjacent pair of disks, and a roller disposed in each of said guides; said lifting means comprising flexible blades, said blades being disposed within said guides such that there is at least one flexible blade disposed over said roller within each of said guides; movement means coupled to said positioning means, said movement means including a rigid member coupled to said flexible blades, said movement means for moving said guides adjacent to said flexible arms, and for moving said rigid member, said rigid member in turn extending said blades through said guides such that said blades exit said guides, contact said flexible arms, and lift said heads away from said disks.
Claim 2
Independent Claim 209 words
A device for lifting magnetic heads disposed on flexible arms of a movable actuator assembly of a disk drive, said disk drive having a plurality of disks, said device comprising: a main frame and a means for removably mounting said frame on said assembly; lifting means for lifting said magnetic heads away from said disks; positioning means for positioning said lifting means adjacent to said flexible arms, said positioning means being moveably attached to said frame and comprising a plurality of guides adopted to fit between said disks, such that there is at least one guide between each adjacent pair of disks, and a roller disposed in each of said guides; said lifting means comprising flexible blades, said blades being disposed within said guides such that there is at least one flexible blade disposed over said roller within each of said guides; movement means coupled to said positioning means, said movement means including a rigid member coupled to said flexible blades, said movement means for moving said guides adjacent to said flexible arms, and for moving said rigid member, said rigid member in turn extending said blades through said guides such that said blades exit said guides, contact said flexible arms, and lift said heads away from said disks.
Claim 3
Dependent Claim 55 words
The device as defined by claim 1, including a first shaft passing through said main frame, said shaft secured to a positioning piece, so as to form a nub; said positioning piece being free to rotate about said first shaft, said positioning piece including an upwardly extending guide pin and a downwardly extending positioning pin.
Claim 4
Dependent Claim 68 words
The device as defined by claim 2, including a second shaft passing through said frame and an end of said movement means, such that said movement means rotates with and about said second shaft, and further including a handle attached to said second shaft for moving said movement means, the rotation of said handle forcing said movement means toward said guides, forcing said flexible blades through said guides.
Claim 5
Dependent Claim 61 words
The device as defined by claim 3, wherein said actuator assembly includes a plurality of actuator arms having a first series of concentrically arranged holes formed therein for receiving said positioning pin and a second series of concentrically arranged holes formed therein for receiving said nub, thereby preventing rotation of said position piece and securing said device on said actuator arm.

References Cited (Backward Citations)

US3702997A Cited
US4392165A Cited
US4644429A Cited
SU1119071A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-07-24 1993-01-23 1993-07-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-07-24 1997-01-23 1997-07-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-07-24 2001-01-23 2001-07-25 $7700.00 Window Closed / Lapsed

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