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FR2391376A1 Expired / Lapsed FR ⏱️ 0.0 years remaining

CRYOSCOPIC PUMPING UNIT

Assignee: Air Products and Chemicals Inc
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Filing: 1978-05-16
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Granted: —
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Expires: 1998-05-16
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Abstract

Abstract Translated from French L'invention concerne les pompes à vide. Un appareil de pompage cryoscopique 10 comprend essentiellement un premier panneau cryoscopique 30 de forme cylindrique, et un second panneau cryoscopique 50, également de forme cylindrique, dont la surface intérieure 56 est revêtue d'une couche de charbon activé, destinée à l'adsorption de l'hydrogène et de l'hélium. Un revêtement d'absorption du rayonnement, placé sur la surface 34, évite la réflexion vers la couche de charbon activé, du rayonnement qui est émis par l'enceinte dans laquelle on désire faire le vide. Application à l'obtention de vides très poussés. The invention relates to vacuum pumps. A cryoscopic pumping apparatus 10 essentially comprises a first cryoscopic panel 30 of cylindrical shape, and a second cryoscopic panel 50, also of cylindrical shape, whose inner surface 56 is coated with a layer of activated carbon, intended for the adsorption of. hydrogen and helium. A radiation absorption coating, placed on the surface 34, prevents the reflection towards the activated carbon layer of the radiation which is emitted by the chamber in which it is desired to create a vacuum. Application to obtaining very high voids.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-04 10:03
CPC Classifications
F; F04; F04B; F04B37/00; F04B37/02; F04B37/06; F04B37/08; Y; Y10; Y10S; Y10S55/00; Y10S55/15

Claims Analysis

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References Cited (Backward Citations)

FR2351283A1 Cited

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