Abstract: A keybaord which is capable of varying the pressure required for the keystroke is provided and comprises an inflatable arrangement being a variable pressure bladder which fits over the keyboard between the base plate and the keys. The operator may vary the pressure delivered to the system as desired and may also preset a cycle of time intervals with pressure "on" and pressure "off". Alternatively, the pressure supply may be linked to a number of keyboards and a programmed variable pressure cycle will be delivered to all the keyboards.

Abstract: A template (26) attached to an anchor pile (12) supports a pull-in tool receptacle (28) at a predetermined location with respect to the anchor pile. The end of the pipe to be connected includes a riser mandrel (16), the lock down connector (20), and a buoyancy module (52). A bridle (42) is temporarily connected (44, 48, 50) to the end of the pipe with the pull-in cable threaded through a pull-in tool (30) and attached to the bridle.The pull-in tool is locked (32) in the frame, and engages and secures alignment pins (40) attached to the bridle when the line has been pulled in. The pipe end is moved (59) into locked engagement with the anchor pile, the bridle (42) disconnected from the pipe end, and thereafter retrieved to the surface with the pull-in tool (30).