skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: COLD TRAP

Abstract

An improved linear-flow cold trap is designed for highvacuum applications such as mitigating back migration of diffusion pump oil moiecules. A central pot of liquid nitrogen is nested within and supported by a surrounding, vertical, helical coil of metai sheet, all enveloped by a larger, upright, cylindrical, vacuum vessel. The vertical interstices between successive turns of the coil afford lineal, axial, high-vacuum passages between open mouths at top and bottom of said vessel, while the coil, being cold by virtue of thermal contact of its innermost turn with the nitrogen pot, affords expansive proximate condensation surfaces. (AEC)

Inventors:
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4707140
Patent Number(s):
US 3081068
Assignee:
U.S. Atomic Energy Commission
NSA Number:
NSA-17-012424
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English
Subject:
ENGINEERING AND EQUIPMENT; COILS; FLUID FLOW; LIQUIDS; LOW TEMPERATURE; NITROGEN; OILS; PUMPS; SURFACES; VESSELS

Citation Formats

Milleron, N. COLD TRAP. United States: N. p., 1963. Web.
Milleron, N. COLD TRAP. United States.
Milleron, N. 1963. "COLD TRAP". United States.
@article{osti_4707140,
title = {COLD TRAP},
author = {Milleron, N},
abstractNote = {An improved linear-flow cold trap is designed for highvacuum applications such as mitigating back migration of diffusion pump oil moiecules. A central pot of liquid nitrogen is nested within and supported by a surrounding, vertical, helical coil of metai sheet, all enveloped by a larger, upright, cylindrical, vacuum vessel. The vertical interstices between successive turns of the coil afford lineal, axial, high-vacuum passages between open mouths at top and bottom of said vessel, while the coil, being cold by virtue of thermal contact of its innermost turn with the nitrogen pot, affords expansive proximate condensation surfaces. (AEC)},
doi = {},
url = {https://www.osti.gov/biblio/4707140}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 12 00:00:00 EST 1963},
month = {Tue Mar 12 00:00:00 EST 1963}
}