| 摘要 |
The present invention relates to a device of protected work in height including an profile of progression( 10 ) and a device of progression ( 20 ) on profile of progression( 10 ) bound by a life line to the user characterized in that the device of progression ( 20 ) includes handles of progression (P) and slippers of progression (C) assembled sliding out of the two smooth rails ( 11 ) of the profile of progression ( 10 ) and which the surface of connection ( 12 ) between the two rails of progression ( 11 ) on the profile of progression( 10 ) does not include steps making it possible to progress along the profile of progression ( 10 ) without the device of progression ( 20 ).
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