Browse Prior Art Database

Retraction Tool for Magnetic Heads

IP.com Disclosure Number: IPCOM000081393D
Original Publication Date: 1974-May-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Bosier, MH: AUTHOR [+4]

Abstract

Fig. 1 shows a head assembly which consists of an arm 1 on which are mounted two magnetic read/write heads 2 and 3. The heads are supported by two leaf springs 4 and 5 attached at one end to the arm 1 and shaped, as shown in the figure, to bias the heads 2, 3 away from each other.

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Retraction Tool for Magnetic Heads

Fig. 1 shows a head assembly which consists of an arm 1 on which are mounted two magnetic read/write heads 2 and 3. The heads are supported by two leaf springs 4 and 5 attached at one end to the arm 1 and shaped, as shown in the figure, to bias the heads 2, 3 away from each other.

Fig. 2 shows the head assembly in an operative position between two disks 6 and 7. The shape and rate of the springs 4, 5 are such that the heads 2, 3 are in contact with the disk surfaces when the disks 6, 7 are stationary, and fly at a predetermined height above the disk surfaces when the disks are rotated at operational speed.

Fig. 3 shows a retraction tool for holding the heads in an unloaded position during assembly or dismantling of the disk file. The tool consists of a two-part molded clip having two arms 8 and 9 which are pushed over the head assembly, as shown in Fig. 4. The arms 8, 9 slope towards each other so that when the tool has been pushed fully home the head suspensions 4, 5 are compressed, so that the heads 2, 3 are firmly supported well clear of the disk surfaces.

Initial insertion of the head assembly between the arms 8, 9 of the tool is facilitated by making one of the arms 9 slightly longer than the other. Lugs 10 disposed on the inside surface of the arms 8, 9 ensure that the tool is correctly positioned with respect to the head assembly as it is slid into place.

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