| 摘要 |
The present invention relates to a sealed case containing a mechanism operating in a liquid lubricant partially filling it. The sealed case 1 comprises an access opening 5, which is for example vertical, on the perimeter of which there is fixed, with interposition of a seal 6, a closure plate 7 of corresponding shape, by means of several threaded fixing means 8. Several spring washers 11 are arranged respectively between the threaded fixing means 8 and the closure plate 7. The seal 6 is non-sticking. The washers 11 are partially compressed by the threaded fixing means 8, in order for each to exert, on the plate 7, a predetermined force corresponding to an internal pressure threshold of the case 1. Above this threshold, the closure plate 7 moves very slightly away from its seal 6 for a very short time, in order to allow only the gases to leave the case 1. <IMAGE>
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