| 摘要 |
<p>The pin (2) has an axial bore (10) whose both sides are closed by a closing unit. A ring (8) is made of a synthetic material coating and interposed between the pin and chain links (1). Connectors (3, 5) are fixed on supports (9a-9c). The bore longitudinally extending from one of supports to the other support encloses a vaporizable material (12) comprising a liquid phase and permitting to evacuate the phase towards the connectors. Calories are provided in the ring. Volume of the material in the liquid state is lower than total volume of the bore so as to allow circulation of the material. The vaporizable material is selected among water, alcohols, trichloroethylene, trichloroethane, tetrahydrofuran and thiols.</p> |
