Rotatable seal assembly
Abstract
An assembly is provided for rotatably supporting a rotor on a stator so that vacuum chambers in the rotor and stator remain in communication while the chambers are sealed from ambient air, which enables the use of a ball bearing or the like to support most of the weight of the rotor. The apparatus includes a seal device mounted on the rotor to rotate therewith, but shiftable in position on the rotor while being sealed to the rotor as by an O-ring. The seal device has a flat face that is biased towards a flat face on the stator, and pressurized air is pumped between the faces to prevent contact between them while spacing them a small distance apart to avoid the inflow of large amounts of air between the faces and into the vacuum chambers.
- Inventors:
-
- Pleasanton, CA
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 864420
- Patent Number(s):
- 4361332
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F16 - ENGINEERING ELEMENTS AND UNITS F16J - PISTONS {
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- rotatable; seal; assembly; provided; rotatably; supporting; rotor; stator; vacuum; chambers; remain; communication; sealed; ambient; air; enables; ball; bearing; support; weight; apparatus; device; mounted; rotate; therewith; shiftable; position; o-ring; flat; biased; towards; pressurized; pumped; prevent; contact; spacing; distance; apart; avoid; inflow; amounts; rotatably supporting; pressurized air; seal assembly; ambient air; vacuum chamber; biased towards; prevent contact; seal device; vacuum chambers; distance apart; ball bearing; /277/
Citation Formats
Logan, Clinton M, and Garibaldi, Jack L. Rotatable seal assembly. United States: N. p., 1982.
Web.
Logan, Clinton M, & Garibaldi, Jack L. Rotatable seal assembly. United States.
Logan, Clinton M, and Garibaldi, Jack L. Fri .
"Rotatable seal assembly". United States. https://www.osti.gov/servlets/purl/864420.
@article{osti_864420,
title = {Rotatable seal assembly},
author = {Logan, Clinton M and Garibaldi, Jack L},
abstractNote = {An assembly is provided for rotatably supporting a rotor on a stator so that vacuum chambers in the rotor and stator remain in communication while the chambers are sealed from ambient air, which enables the use of a ball bearing or the like to support most of the weight of the rotor. The apparatus includes a seal device mounted on the rotor to rotate therewith, but shiftable in position on the rotor while being sealed to the rotor as by an O-ring. The seal device has a flat face that is biased towards a flat face on the stator, and pressurized air is pumped between the faces to prevent contact between them while spacing them a small distance apart to avoid the inflow of large amounts of air between the faces and into the vacuum chambers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1982},
month = {Fri Jan 01 00:00:00 EST 1982}
}