COLD TRAP

Patent · Tue Mar 12 00:00:00 EST 1963

OSTI ID:4707140

Milleron, N

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)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-012424
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 3081068
• OSTI ID: 4707140
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-63
• Country of Publication: United States
• Language: English

Related Subjects

ENGINEERING AND EQUIPMENT
COILS
FLUID FLOW
LIQUIDS
LOW TEMPERATURE
NITROGEN
OILS
PUMPS
SURFACES
VESSELS