Browse Prior Art Database

Hard File Disk Spacer Ring With Grooves for Air Passage

IP.com Disclosure Number: IPCOM000046497D
Original Publication Date: 1983-Jul-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 3 page(s) / 53K

Publishing Venue

IBM

Related People

Pexton, FC: AUTHOR

Abstract

Spacer ring 10, as shown particularly in Figs. 1 and 2, has a series of curved slantwise extending air-passage grooves 12 in its upper face and a series of curved slantwise extending grooves 14 in its lower face that allow air from the inside to pass through the spacer ring to cool a pair of hard magnetic disks 16 and 18 that are in contact with the upper and lower faces, respectively, of ring 10.

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Hard File Disk Spacer Ring With Grooves for Air Passage

Spacer ring 10, as shown particularly in Figs. 1 and 2, has a series of curved slantwise extending air-passage grooves 12 in its upper face and a series of curved slantwise extending grooves 14 in its lower face that allow air from the inside to pass through the spacer ring to cool a pair of hard magnetic disks 16 and 18 that are in contact with the upper and lower faces, respectively, of ring 10.

Grooves 12 have entrance ends 12a on the inner edge 10a of disk 10 that are equally spaced and have exit ends 12b on the outer edge l0b of disk 10 that are also equally spaced. Sides 12c and 12d of each of the grooves 12 are curved opposite to arrow 20 so that the exit ends 12b are behind the entrance ends 12a considering the direction of arrow 20.

Grooves 14 in the bottom face of ring 10 are of the same shape as grooves 12 and are equally spaced in the same manner about ring 10 as grooves 12 and are offset with respect to grooves 12 by one-half of the spacing between the inlet ends and the outlet ends of grooves 12. As shown in Fig. 2, the depths of grooves 12 and 14 are about one-quarter of the thickness of ring 10 so that one- half of the thickness of ring 10 is solid.

Ring 10 and disks 16 and 18 are disposed on hub 22 having a generally cylindrical outer surface. Hub 22 has longitudinally extending flutes 24 alternating with grooves 26 on its outer surface, and the inner edges of disks 16 and 18 and ring 10 are in snug contact with flutes 24 so that disks 16 and 18 remain concentric with the center of hub 22. The entrance ends 12a of passages 12 and the corresponding entrance ends of passages 14 are in communication with the grooves 26, as shown particularly in Fig. 1. Disks 16 and 18 may be in vertically stacked relationship with similar disks, such as disks 28 and 30 shown in Fig. 3 and a spacer ring 10 is used between each adjacent pair of disks in the stack.

In operation, hub...