Patent ID: 7976084

Claim:
A light weight lifting tool ( 10 ) for lowering and retrieving subsea equipment, including an upper coupling part in the form of a connector spool piece ( 15 ) having at least one circumferential ring groove ( 16 ) for use in making engagement with the lifting tool ( 10 ), said lifting tool ( 10 ) comprises: a housing ( 1 ) designed to enclose and receive the connector spool piece ( 15 ), a number of latch segments ( 8 ) having at least one radially inwards directed projection ( 8 ′) designed for engagement with said at least one ring groove ( 16 ), and an activating device ( 6 ) arranged to bring said latch segments ( 8 ) in and out of engagement with said at least one ring groove ( 16 ) by operation of the activating device ( 6 ), and an activating pin ( 9 ) connected to each of the individual latch segments ( 8 ), each of the activating pins ( 9 ) extending out through an external wall of the housing ( 1 ), wherein the activating device ( 6 ) comprises: a loosely connected activating ring which circumscribes the housing ( 1 ), a number of coulisse slots ( 7 ) adapted to receive respective activating pins ( 9 ), wherein each of coulisse slots ( 7 ) extends substantially circumferentially to the housing ( 1 ), while steadily increasing in distance from the external wall of the housing ( 1 ) in one direction thereof, and each of the coulisse slots ( 7 ) in cooperation with the respective activating pin ( 9 ) brings the respective latch segments ( 8 ) back and forth in a radial direction during circumferential turning of the activating ring.