Browse Prior Art Database

Seal for Hydrostatic Bearing

IP.com Disclosure Number: IPCOM000089724D
Original Publication Date: 1977-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Mack, A: AUTHOR [+3]

Abstract

The figure discloses an improved seal for a hydrostatic bearing which utilizes the Coanda effect. As shown, air exhausted from the air bearing 12 flows along the inside diameter of seal 14 and around radius 15 into groove 16. An additional groove 18 is provided, and, if necessary, additional grooves (not illustrated) could be added to the seal. It should be recognized that each groove is provided with slots 22 that communicate with corresponding chambers 26, 28 formed within housing 24, with the chambers communicating with exhaust air tubes.

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Seal for Hydrostatic Bearing

The figure discloses an improved seal for a hydrostatic bearing which utilizes the Coanda effect. As shown, air exhausted from the air bearing 12 flows along the inside diameter of seal 14 and around radius 15 into groove 16. An additional groove 18 is provided, and, if necessary, additional grooves (not illustrated) could be added to the seal. It should be recognized that each groove is provided with slots 22 that communicate with corresponding chambers 26, 28 formed within housing 24, with the chambers communicating with exhaust air tubes.

The entry of air from the bearing into the grooves results in a build up of turbulence in the groove which, in turn, creates an air curtain that reduces bearing load capacity and air consumption.

It is possible to utilize the basic seal construction illustrated with nonadherent fluids, if desired, to provide a seal for a hydrostatic bearing in an alternative application.

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