Patents Assigned to Well-Equip Limited
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Patent number: 5568836Abstract: A release device for releasably coupling a first object to a second object includes a first member (10) adapted to be coupled to the first object and a second member (20) adapted to be coupled to the second objects. A latch mechanism (12, 21, 28) releasably couples the first member (10) to the second member (20). A time delay mechanism (22, 23, 24, 26, 27) permits the latch mechanism (12, 21, 28) to decouple the first and second members (10, 20) only after a time interval has elapsed from initiation of the decoupling of the first and second member (10, 20).Type: GrantFiled: June 5, 1995Date of Patent: October 29, 1996Assignee: Well-Equip LimitedInventor: Michael A. Reid
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Patent number: 5535823Abstract: Apparatus (50) for amplifying a load applied by a wireline to a tool in a borehold includes a housing (4). A first coupling device (51) couples the wireline to the apparatus (50) and a second coupling device (60) couples the tool to the apparatus (50). The second coupling device (19) is movably mounted within the housing (4) and the transmission mechanism (9, 14,16) interconnects the first and second coupling devices. The transmission mechanism permits a mechanical advantage and comprises a first linearly movable member (9) coupled to the first coupling device (51) and a second linearly movable member (16) coupled to the second coupling device (19). The first and second members (9, 16) are interconnected by a rotatable member (14) such that movement of the first member (9) rotates the rotatable member (14) to move the second member (16). The movement of the second member (16) is less than the movement of the first member (9) and so the apparatus (50) generates a mechanical advantage.Type: GrantFiled: January 30, 1995Date of Patent: July 16, 1996Assignee: Well-Equip LimitedInventor: Michael A. Reid
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Patent number: 5379837Abstract: A lock member (10) is disclosed for securing to a lock structure (14) in a conduit. The lock member (10) comprises a housing (24), a shoulder (16) on the lock structure (10), a locking device (26) movably mounted on the housing (24) for movement between a first retracted position and a second extended position in which the locking device (26) enters a corresponding locking recess (30) in the lock structure (14). The shoulder (16) of the lock member (10) is movably mounted on the housing (24) between a first position in which, in use, the shoulder (16) bears upon the shoulder (18) of the locking structure (14) and the locking device (26) when in the extended position is disengaged from the surfaces of the locking recess (30) of the lock structure (14). When the shoulder (16) of the lock member (10) is in the second axial position, the locking device (26) bears upon a surface of the locking recess (30) so as to bear at least a portion of any load applied to an end of the lock member (10).Type: GrantFiled: June 4, 1993Date of Patent: January 10, 1995Assignee: Well-Equip LimitedInventor: Michael A. Reid
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Patent number: 5253706Abstract: A release mechanism is described for releasing a lock member (10) which secures a first body member (5) to a second body member (1). The release mechanism comprises a reciprocal member (6) which is mounted on the first body member (5) for movement relative to the first body member (5). A catch mechanism (8, 11, 12) is also provided which is movable between the first position where the lock member (10) is fixed and the second position where the lock member (10) is released. The reciprocal member (6) moves in a first direction when a force is applied to the reciprocal member (6) and moves in a second direction when the force is removed. Repeated reciprocal movement of the reciprocal member (6) in the first and second directions effects movement of the catch mechanism (8, 11, 12) from the first position to the second position to release the lock member (10) to permit relative movement between the first and second body members (5, 1).Type: GrantFiled: December 26, 1991Date of Patent: October 19, 1993Assignee: Well-Equip LimitedInventor: Michael A. Reid
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Patent number: 5088853Abstract: A connector is described which comprises a male member (20) and a female member (30; 40). The male member (20) has two longitudinally spaced sets of three circumferentially flanges (1). When the male member (20) is inserted into the female member (30; 40) the flanges (1) locate in co-operating recesses (11) defined by flanges (31) in a central bore (10) of the female member (30; 40). Located in the body of the female member (30; 40) is a latch (4; 41) which engages a corresponding slot (3) in the end of the male member (20) and prevents relative rotation between the male and female members after connection. The latch (4; 41) is pivotally mounted on the female member (30; 40) and is biassed into engagement with the slot (3) by a spring (6).Type: GrantFiled: January 7, 1991Date of Patent: February 18, 1992Assignee: Well-Equip LimitedInventor: Michael A. Reid
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Patent number: 5052485Abstract: A jar mechanism is described, which comprises a piston (5) movably mounted in a fluid chamber (9). A jar member (2) is releasably coupled to the piston (5) by a release device (3, 4; 3, 38, 39, 40, 54, 64) so that when the piston (5) is in a first position in the fluid chamber (9), the jar member (2) is coupled to the piston (5) by the release device (3, 4; 3, 38, 39, 40, 54, 64). A first force exerted on the jar member (2) moves the piston (5) to a second position within the fluid chamber (9) against the resistance of the fluid (11). When the piston (5) is in the second position, the action of the first force applied to the jar member (2) actuates the release device (3, 4; 3, 38, 39, 40, 54, 64) to enable the jar member (2) to be uncoupled from the piston (5).Type: GrantFiled: June 22, 1990Date of Patent: October 1, 1991Assignee: Well-Equip LimitedInventor: Michael A. Reid