Abstract: An actuated seal assembly for controlling flow in a fluid path in turbomachinery comprising a seal and a seal carrier coupled to the seal is provided. A displacement apparatus is coupled to the seal carrier for positioning the seal so as to control the flow in the fluid path. In addition, a drive system is provided for powering the displacement apparatus.

Abstract: A rotary joint used for armored diving suits which joint allows rotary motion and which seals the internal portions of the diving suit from the high pressure water in which the user is operating. The rotary joint allows axial movement during operation and reduces premature seal failure due to moments created about the axis of the joint which are prevented from reaching the seals allowing rotating movement. In the event of seal failure, a fail-safe sealing system comprising back up seals not used during normal suit operation is used to isolate the internal portions of the diving suit from water ingress.

Abstract: A seal for sealing a low pressure area from a high pressure area for containing a process fluid. The high pressure area is located along a rotatable shaft extending from a machine body. The seal includes an outboard seal positioned along the shaft, and an inboard seal axially spaced along the shaft from the outboard seal. An annular chamber is defined between the inboard seal and the outboard seal for containing a buffer fluid. The inboard seal includes a stationary assembly attached to the machine body. The stationary assembly includes a stationary seal ring having a stationary sealing face, and a first secondary seal between the stationary seal ring and the housing. The inboard seal further includes a rotating assembly attached to the shaft. The rotating assembly includes a rotating seal ring having a rotating sealing face in sealing relation with the stationary sealing face and a second secondary seal between the rotating seal ring and the shaft.