Browse Prior Art Database

Read/Write Head Load Unload Device

IP.com Disclosure Number: IPCOM000084667D
Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Bailey, EL: AUTHOR [+3]

Abstract

This device controls the loading and unloading movements of read/write heads D with respect to a rotatable magnetic disk C. The device uses a capacitor H and resistor J connected in series with each other and connected as an assembly in parallel with a solenoid A which controls movement of heads D.

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Read/Write Head Load Unload Device

This device controls the loading and unloading movements of read/write heads D with respect to a rotatable magnetic disk C. The device uses a capacitor H and resistor J connected in series with each other and connected as an assembly in parallel with a solenoid A which controls movement of heads D.

Magnetic disk C drivingly rotated about center c is disposed between heads
D. Heads D are mounted on spring arms K that are in turn mounted at their bases on swing arms L(1) and L(2). Arms L(1) and L(2) are mounted on a carriage M by leaf springs N, and carriage M is moved radially with respect to center c in direction P by any suitable means, not shown. The lower portion 1(1) of arm L(1) acts on the lower portion 1(2) of arm L(2) so that when the first arm L(1) is swung outwardly with respect to disk C, the other arm L(2) is likewise swung outwardly from disk C.

Lever B is swingably mounted with respect to a stationary frame Q at pivot point q. A spring E is provided between lever B and frame Q, and the armature G of solenoid A is effective to swing lever B about pivot q against the action of spring E. Lever L(1) has a part R overlying an elongated end portion b of lever B so that spring E is effective to rotate lever B in such direction to separate swing arms L(1) and L(2), and thus separate heads D with respect to disk C. When solenoid A is energized, lever B is moved in the opposite direction against the action of spring E so that...