Abstract: A removable clamping device is described which uniformly and effectively joins two fluid transmission lines at their normal termination points, using standard adapter flanges and removable seals and generally "C" shaped clamps having narrow slots therein which are designed to just slip over the smallest diameter of the adapter or fluid line and bear against the respective connecting flanges. The two clamps are held together by threaded bolts which are spaced equally about the clamps and which may be tightened or loosened without exerting undesirable rotational torque about the long axis of the fluid line connection, thus avoiding possible breakage and leakage.

Abstract: A detachable locking device is described which consists of a pair of standard box end wrenches with shortened handles having integral ears on the ends of the handles with openings therethrough. The wrenches are first placed behind the respective connecting nuts on the line termination point adapter assemblies which are to be joined. The preliminary connection and seal is then made using conventional methods and the connecting nuts are torqued to near their optimum value. The box end wrenches of the locking device are then positioned on the nuts so that a connecting bolt can be passed through the openings in the ears on the handles, a nut attached thereto and then tightened to hold and secure the connecting nuts together and prevent the nuts from loosening or seal leaking during the operation of the fluid transmission line.

Abstract: An improved apparatus is described for the closure of the open end of a conventional tube furnace used in the treatment of semiconductor devices manufactured in the integrated circuit industry. The apparatus consists primarily of an adjustable fixed weight on one end of a lever arm and a roller bearing means on the other end, said lever arm being supported by a fulcrum structure which is adjustably attached to the movable track which transports the semiconductor devices into and out of the furnace. The roller bearing end of the lever arm rests with constant pressure against the rear face of the furnace door when the door is closed and held against the opening in the tube furnace. The design eliminates the need for springs and is insensitive to the environment.