High vacuum pump system

Details High vacuum pump system High vacuum pump system

1975-10-30

1978-05-16

Capossela, Ronald

Refrigeration

Low pressure cold trap process and apparatus

55269, 62268, 417901, 427372B, 427376C, B01D 500

Patent

active

040891852

ABSTRACT:
The invention provides a high vacuum pump system of high pumping speed in which the surfaces that are to be cooled are coated with adsorbents in such a manner that it is possible to bale out and activate the coatings at temperatures between 250.degree. and 400.degree. C and then to use them for the maintenance or repeated generation of high vacua containing no hydrocarbons down to pressures as low as about 10.sup.-8 torrs.

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patent: 3656175 (1972-04-01), Phelps, Jr. et al.
patent: 3936560 (1976-02-01), Santurri et al.

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