| 摘要 |
PCT No. PCT/JP79/00258 Sec. 371 Date Jun. 13, 1980 Sec. 102(e) Date Jun. 11, 1980 PCT Filed Oct. 11, 1979 PCT Pub. No. WO80/00896 PCT Pub. Date May 1, 1980.An apparatus for stabilizing the pressure of a seal gas includes a hollow body (10) having a first pipe (11) with a conductance C1, a second pipe (12) with a conductance C2 and a third pipe (13) with a conductance C3, all these pipes communicating with each other. The conductance C1 is smaller than either of the conductances C2 and C3. The first pipe (11) is connected to a source (15) of the same kind of gas as a desired gas to be sealed in the tubular bulb (1), the second pipe (12) is connected to a decompressing system (17), and the third pipe (13) is connected to the tubular bulb (1). In accordance with both the apparatus and method according to the present invention, the conductances C1 and C2 are so set that a gas pressure in the third pipe (13) may be made equal to or lower than a desired pressure to be attained in the tubular bulb (1) under conditions wherein the gas from the gas source (15) constantly flows from the first pipe to the second pipe.
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