DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: MEANS AND METHOD FOR PRODUCING A VACUUM

Abstract

A new method is given for starting the operation of evapor-ion vacuum pumps. Ordinarily this type of pump is started by inducing an electric field with the vacuum chamber; however, by placing such an electric field in the chamber at the outset, a glow discharge may be initiated which is harmful to the pump. The procedure consists of using a negative electric field during which time only gettering action takes place; subsequently when the field reverses after a sufficient reduction of the number of gaseous particles in the chamber both gettering and ionizing takes place.

Inventors:
Issue Date:
OSTI Identifier:
4128784
Patent Number(s):
2947465
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
NSA Number:
NSA-14-025605
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
ENGINEERING AND EQUIPMENT; CLOSURES; ELECTRIC FIELDS; EVAPORATION; GASES; GLOW DISCHARGES; IONIZATION; IONS; LABORATORY EQUIPMENT; OPERATION; PARTICLES; PATENT; PUMPS; TRAPS; VACUUM

Citation Formats

Otavka, M A. MEANS AND METHOD FOR PRODUCING A VACUUM. United States: N. p., 1960. Web.
Otavka, M A. MEANS AND METHOD FOR PRODUCING A VACUUM. United States.
Otavka, M A. Mon . "MEANS AND METHOD FOR PRODUCING A VACUUM". United States.
@article{osti_4128784,
title = {MEANS AND METHOD FOR PRODUCING A VACUUM},
author = {Otavka, M A},
abstractNote = {A new method is given for starting the operation of evapor-ion vacuum pumps. Ordinarily this type of pump is started by inducing an electric field with the vacuum chamber; however, by placing such an electric field in the chamber at the outset, a glow discharge may be initiated which is harmful to the pump. The procedure consists of using a negative electric field during which time only gettering action takes place; subsequently when the field reverses after a sufficient reduction of the number of gaseous particles in the chamber both gettering and ionizing takes place.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {8}
}