MOLECULAR VACUUM PUMP
Abstract
A multiple molecular vacuum pump capable of producing a vacuum of the order of 10/sup -9/ mm Hg is described. The pump comprises a casing of an aggregate of paired and matched cylindrical plates, a recessed portion on one face of each plate concentrically positioned formed by a radially extending wall and matching the similarly recessed portion of its twin plate of that pair of plates and for all paired and matched plates; a plurality of grooves formed in the radially extending walls of each and all recesses progressing in a spiral manner from their respective starting points out at the periphery of the recess inwardly to the central area; a plurality of rotors rotatably mounted to closely occupy the spaces as presented by the paired and matched recesses between all paired plates; a hollowed drive-shaft perforated at points adjacent to the termini of all spiral grooves; inlet ports at the starting points of all grooves and through all plates at common points to each respectively; and a common outlet passage presented by the hollow portion of the perforated hollowed drive-shaft of the molecular pump. (AEC)
- Inventors:
- Issue Date:
- OSTI Identifier:
- 4022081
- Patent Number(s):
- 2954157
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04D - NON-POSITIVE-DISPLACEMENT PUMPS
- NSA Number:
- NSA-15-024937
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- United States
- Language:
- English
- Subject:
- ENGINEERING AND EQUIPMENT; CONFIGURATION; CYLINDERS; MECHANICAL STRUCTURES; MOLECULES; PLATES; PRESSURE; PUMPS; ROTATION; SURFACES; VACUUM
Citation Formats
Eckberg, E E. MOLECULAR VACUUM PUMP. United States: N. p., 1960.
Web.
Eckberg, E E. MOLECULAR VACUUM PUMP. United States.
Eckberg, E E. Tue .
"MOLECULAR VACUUM PUMP". United States.
@article{osti_4022081,
title = {MOLECULAR VACUUM PUMP},
author = {Eckberg, E E},
abstractNote = {A multiple molecular vacuum pump capable of producing a vacuum of the order of 10/sup -9/ mm Hg is described. The pump comprises a casing of an aggregate of paired and matched cylindrical plates, a recessed portion on one face of each plate concentrically positioned formed by a radially extending wall and matching the similarly recessed portion of its twin plate of that pair of plates and for all paired and matched plates; a plurality of grooves formed in the radially extending walls of each and all recesses progressing in a spiral manner from their respective starting points out at the periphery of the recess inwardly to the central area; a plurality of rotors rotatably mounted to closely occupy the spaces as presented by the paired and matched recesses between all paired plates; a hollowed drive-shaft perforated at points adjacent to the termini of all spiral grooves; inlet ports at the starting points of all grooves and through all plates at common points to each respectively; and a common outlet passage presented by the hollow portion of the perforated hollowed drive-shaft of the molecular pump. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {9}
}