Browse Prior Art Database

Disc Air Bearing

IP.com Disclosure Number: IPCOM000097978D
Original Publication Date: 1961-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Khoury, HA: AUTHOR

Abstract

A hydrostatic air bearing support is provided for a rotating flexible film disc 10. Disc 10 is mounted on shaft 12 for rotation. Lower, doughnutshaped air bearing element 14 is fixed to base plate 16. Upper, doughnutshaped air bearing element 18 includes a peripheral flange 20. Base plate 16 supports at least three pins 22 for which there are corresponding depressions 23 in the lower side of 20. Elements 14 and 18 have internal channels 24 and 26, respectively. Channel 24 is supplied with pressurized air through tube 28. Channel 26 is provided with air through tube 30. The flat, upper surface of 14 is connected with 24 by a plurality of orifices 32 arranged in a ring concentric with 14. Similarly, channel 26 is connected with the flat, lower surface of 18 by a plurality of orifices 34.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 93% of the total text.

Page 1 of 2

Disc Air Bearing

A hydrostatic air bearing support is provided for a rotating flexible film disc
10. Disc 10 is mounted on shaft 12 for rotation. Lower, doughnutshaped air bearing element 14 is fixed to base plate 16. Upper, doughnutshaped air bearing element 18 includes a peripheral flange 20. Base plate 16 supports at least three pins 22 for which there are corresponding depressions 23 in the lower side of 20. Elements 14 and 18 have internal channels 24 and 26, respectively. Channel 24 is supplied with pressurized air through tube 28. Channel 26 is provided with air through tube 30. The flat, upper surface of 14 is connected with 24 by a plurality of orifices 32 arranged in a ring concentric with 14. Similarly, channel 26 is connected with the flat, lower surface of 18 by a plurality of orifices 34.

In the rest position, i.e., without air applied to tubes 28 and 30, 18 rests on pins 23. In this position, there is a small clearance between disc 10 and 14 and
18. However, when pressure is applied to 30, element 18 rises off from 22, slightly increasing the spacing. Air applied to 28 also maintains 10 separate from
14. In this raised position, disc 10 is rotated by shaft 12 and the disc, which is flexible, is stabilized in a plane between 14 and 18. The spacing between 14 and 18 and disc 10 is in the order of one to two mils and is exaggerated in the drawing.

Disc 10 carries data, recorded either magnetically or photographically or otherwise. A transducer element...