Abstract: A coupler assembly (60) for a sub-sea connector including a coupler (18) having an abutment (76) radially outwardly from the coupler body (64), and a radially inwardly extending groove (78) in the coupler body that is longitudinally spaced apart from the abutment. The abutment (76) is configured to engage the rear side of the plate when the coupler is inserted through a rearward opening in the plate. The groove (78) may be longitudinally spaced apart from the abutment such that, when the abutment is engaged with the rear of the plate, the groove is positioned forwardly of the front side of the plate sufficiently to allow a portion of a mounting ring (82) to be inserted into the groove with a portion of the mounting ring protruding radially outwardly from the body to engage an abutment surface at the front side of the plate, thereby restricting axial movement of the body relative to the plate.

Abstract: A novel sealing member and a novel wedging element that may be part of a novel seal assembly. The seal assembly may remain effective for more connection/disconnection cycles as compared to the previously known seals. In exemplary embodiments, the wedging element may engage the sealing member or a pair of the sealing members that sandwich the wedging element. When engaged, an inclined surface of the wedging element may radially compress a radially inwardly extending sealing leg of one or both of the sealing members. A fluid pressure opposite the wedging element relative to the corresponding sealing member may radially expand a radially outwardly extending sealing leg of one or both of the sealing members.

Abstract: A coupler assembly (60) for a sub-sea connector including a coupler (18) having an abutment (76) radially outwardly from the coupler body (64), and a radially inwardly extending groove (78) in the coupler body that is longitudinally spaced apart from the abutment. The abutment (76) is configured to engage the rear side of the plate when the coupler is inserted through a rearward opening in the plate. The groove (78) may be longitudinally spaced apart from the abutment such that, when the abutment is engaged with the rear of the plate, the groove is positioned forwardly of the front side of the plate sufficiently to allow a portion of a mounting ring (82) to be inserted into the groove with a portion of the mounting ring protruding radially outwardly from the body to engage an abutment surface at the front side of the plate, thereby restricting axial movement of the body relative to the plate.

Abstract: A novel sealing member and a novel wedging element that may be part of a novel seal assembly. The seal assembly may remain effective for more connection/disconnection cycles as compared to the previously known seals. In exemplary embodiments, the wedging element may engage the sealing member or a pair of the sealing members that sandwich the wedging element. When engaged, an inclined surface of the wedging element may radially compress a radially inwardly extending sealing leg of one or both of the sealing members. A fluid pressure opposite the wedging element relative to the corresponding sealing member may radially expand a radially outwardly extending sealing leg of one or both of the sealing members.

Abstract: A multi-coupling includes a fixed plate and a free plate, and a primary locking mechanism for locking the free plate to the fixed plate aligned to form multiple fluid passages through the multi-coupling. The primary locking mechanism may include a drive screw secured to the fixed plate engaged with a drive nut secured to the free plate, and a clam shell securing mechanism that secures the drive screw to the fixed plate. The clam shell halves are moveable to release the drive screw from the fixed plate independently of releasing drive screw from the drive nut. The multi-coupling further may include satellite locking mechanisms in combination with the primary locking mechanism. The satellite locking mechanisms may include satellite securing mechanisms that are moveable to release the satellite locking mechanism from the fixed plate. The locking mechanisms are removable while retaining the fixed plate fixed to base equipment.

Abstract: A seal retainer (60) having an axially facing surface with an axially facing concave portion (64) for receiving a convex face of a sealing member (66). The axially facing concave portion (64) allows the sealing member (66) to be seated in the axially facing concave portion (64) and retain at least some of its shape when under pressure, such as separation pressure within a quick coupling, to reduce stresses acting on the sealing member (66). Thus, the sealing member (66) may undergo less fatigue when cycling between a pressurized and non-pressurized state. Reducing fatigue allows sealing members, such as metal sealing members, to endure a greater amount of cycles before leaking, which reduces replacement costs of the sealing members.

Abstract: A multi-coupling includes a fixed plate and a free plate, and a primary locking mechanism for locking the free plate to the fixed plate aligned to form multiple fluid passages through the multi-coupling. The primary locking mechanism may include a drive screw secured to the fixed plate engaged with a drive nut secured to the free plate, and a clam shell securing mechanism that secures the drive screw to the fixed plate. The clam shell halves are moveable to release the drive screw from the fixed plate independently of releasing drive screw from the drive nut. The multi-coupling further may include satellite locking mechanisms in combination with the primary locking mechanism. The satellite locking mechanisms may include satellite securing mechanisms that are moveable to release the satellite locking mechanism from the fixed plate. The locking mechanisms are removable while retaining the fixed plate fixed to base equipment.