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公开(公告)号：US3717525A
公开(公告)日：1973-02-20
申请号：US3717525D
申请日：1968-05-23
Applicant: VARIAN MAT GMBH
Inventor： BUELTEMANN H
Abstract: THE INVENTION IS CONCERNED WITH A METHOD OF MAKING GAS DIFFUUSION MEMBRANES. THE PORES ADJACENT THE SURFACE OF A POROUS PERMEABLE CARRIER MEMBER ARE FILLED WITH A MATERIAL, LATER TO BE REMOVED, A DIFFUSION MEMBER IS APPLIED TO THAT SURFACE, AND THE FILLER MATERIAL IS THEN REMOVED. IN ANOTHER EMBODIMENT A DIFFUSION MEMBER IS APPLIED TIO A GLASS CARRIER MEMBER WHICH IS PORE-FREE, AND THE GLASS IS THEN MADE POROUS BY HEAT TREATMENT AND SELECTIVE DISSOLUTION.
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22.发明授权Ion-pumped mass spectrometer leak detector apparatus and method and ion pump therefor 失效离子泵质谱仪泄漏探测器装置及方法及其离子泵
公开(公告)号：US3591827A
公开(公告)日：1971-07-06
申请号：US3591827D
申请日：1967-11-29
Applicant: ANDAR ITI INC
Inventor： HALL LEWIS D
Abstract: A mass spectrometer is connected to a vacuum system which includes a vacuum-pumping system and which is communicated with the vessel under test exposed to a suitable probe gas. The vacuum-pumping system consists of a first stage in the form of a mechanical roughing pump for reducing the system pressure to roughing pressure, and a second stage in the form of a highvacuum pump which comprises an electronic getter-ion (sublimation) pump for pumping the chemically active nonnoble gases in combination with a Penning discharge chamber which houses discharge cathodes exposed to the deposit of the getter material from the getter-ion pump for pumping the noble gas.
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公开(公告)号：US3508099A
公开(公告)日：1970-04-21
申请号：US3508099D
申请日：1968-02-16
Applicant: JANUSZ GROSZKOWSKI
Inventor： GROSZKOWSKI JANUSZ
CPC classification number: H01J41/04
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