| 摘要 |
The invention relates to a stop which is locked in position a bore of an operative device as well as to a device provided with at least one such stop. The stop is adapted for use particularly with, but not exclusively, with a safety valve. The stop includes a skirt adapted to be received in a bore and having at one end (29) by which it is connected to a centering dish (26), a diameter which adjusts itself practically without play in the bore (30) designed to receive the stop. At a second free end (31) the skirt has a diameter prior to positioning in the bore which is larger than that of the bore (30) intended to receive the stop so that, during the assembly, the skirt is compressed by the walls of the bore and thereafter, by reaction, it is forcibly pressed against the walls of the bore (30).
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