| 摘要 |
a. Flexible mechanical transmission of linear movement, especially for a portable sampling aspirator for breathed air; b. Transmission characterised in that the transmission agent 23, 30, 43 consists of a helical spring with close coils, having a coiled diameter and a wire thickness, in relation with the length of the rectilinear displacement portions, such that, without internal or external guidance along these rectilinear portions, it is not curved laterally by the compression force which is applied to it; c. The invention relates to a flexible mechanical transmission of linear movement, especially for a portable sampling aspirator for breathed air. <IMAGE>
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