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Class Information
Number: 137/197
Name: Fluid handling > Diverse fluid containing pressure systems > Fluid separating traps or vents > Discriminating outlet for gas
Description: Separating traps wherein the trap is provided with an outlet through which outflow of a gas is permitted but outflow of a liquid or diverse gas therethrough is prevented.

Sub-classes under this class:

Class Number Class Name Patents
137/199 Fluid sensing valve 56
137/198 With reverse flow stop or pressure regulating valve 22

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
4207870 Blood sampling assembly having porous vent means vein entry indicator Jun. 17, 1980
4200096 Device for introducing a liquid other than blood in a blood vessel Apr. 29, 1980
4030495 Twin check valve pump system having fail-safe characteristic Jun. 21, 1977
4027494 Low gravity phase separator Jun. 7, 1977
4013072 Drip chamber for intravenous administration Mar. 22, 1977
3982538 Safety valves for protection against liquid contamination Sep. 28, 1976
3948147 Hydraulic system with air-venting arrangement Apr. 6, 1976

1 2

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