Abstract: It is provided a polarization-independent optical isolator without depending on the polarized wave of the light being input to the waveguide-type optical isolator, in particular, it is able to completely isolate the propagating light of the backward direction.

Abstract: A clamp for attaching a pipeline tracer wire to a pipeline riser has an elongated riser grip which is resiliently flexible to snap onto the riser. An elongated conduit with a V-shaped groove extends integrally along the outer wall of the riser grip. The conduit receives the tracer wire therein. At least one tap screw is engagable in the groove and radially into the conduit to lock the tracer wire between the screw and the opposite inner wall of the conduit. Alternatively, a tap screw may be threadedly engaged in the upper end of the conduit to lock the tracer wire between the screw and the opposite inner wall of the conduit. Preferably, the clamp is made of non-metallic, fire retardant material such as a high density thermoplastic.

Abstract: A security hydraulic coupling system includes at least two hydraulic connector fittings (4, 5) which may be connected to adjacent fluid ports (1, 2) of a hydraulic unit (12) and which are linked to each other by means of a base plate (3) which is also shaped to cooperate with at least one projection (10) on the hydraulic unit (12) to thereby physically prescribe the positions of the various elements during the steps of fitting connection and disconnection. An interlock system comprises a security pin (6) which is housed in the base plate (3) and is mounted between the fittings (4, 5) and cooperates with grooves (7, 8) provided in the fittings (4, 5) to prescribe the possible sequence of steps in connecting/disconnecting the fittings (4, 5) from the ports of the hydraulic unit (12).

Abstract: A well tool (e.g. well screen) having a single connector for fluidly connecting the shunt conduits carried by adjacent joints of a well tool to thereby eliminate the need for separate, individual connectors. The single connector is slidably mounted on the central conduit of one of the joints and has a plurality of passages therethrough, each of which is adapted to receive a respective shunt conduit on one of the adjacent joints. After the central conduits of two adjacent joints are coupled together, the single connector is moved whereby the upper ends of the respective shunts on one joint enter the lower ends of the respective passages to thereby fluidly connect the respective shunt conduits. The single connector is then secured in a connected position.

Abstract: The invention relates to a wiper and washing system including a tube with two separate channels, a nozzle head with at least two washing nozzles, one of which is connected to the one channel and the other of which is connected to the other channel of the tube, and a connecting piece from which the tube starts off. In order to avoid wrong assemblies, coding the connections between the tube and the nozzle head as well as between the tube and the connecting piece are provided on the tube on the one hand, and on the nozzle head or on the connecting piece on the other hand.

Abstract: An apparatus for selective combination of at least one first stationary pipeline for liquids with a plurality of second stationary pipelines by means of a movable pipeline connection and a coupling system, wherein the first and second pipelines have each a movable connecting pipeline which at the free end contains a connecting head, the connecting heads of the first pipelines being guided by means of first guides along parallel first axes and the connecting heads of the second pipelines being guided by means of a second guides along parallel second axes which extend perpendicularly to the first axes, the connecting heads having wound off end portions, the ends of which hold first coupling parts having front surfaces all lying in approximately one coupling plane, the second coupling parts have a circular radial retaining edges and the first coupling parts have a coupling annular segment with a radial flange section extending only over an arch length of 180 degrees or less and gripping back the retaining edge o

Abstract: A manifold is provided surrounding the casing of a combustion chamber for a gas turbine engine, and the manifold is mounted in spaced aligned segments with couplings between the segments. Each coupling includes a removable tube connector extending between passageways forming the fuel line in the manifold. The tube connector is provided with a radial collar thereon, and a sleeve which is adapted to enclose the space between ends of respective manifold segments is also provided with a mating collar adapted to receive the radial collar on the tube connector. The sleeve is retractable over the ends of the manifold segments, and movement of the sleeve in one direction or the other will also move the tube connector by virtue of the interlocking collars. The manifold segments are provided with a second passageway for draining leaked fuel. The space defined by the sleeve is sealed, and fuel can communicate through to the second passageway for drainage outboard of the engine.

Abstract: This invention relates to a coupling member for use in the liquid-tight and gas-tight connection of vessels, of different sizes to a two-way extraction system. The coupling part comprises two parts, a cylindrical adaptor part and a part comprised of a union nut. The cylindrical adaptor part has, on its side facing the extraction system, a diameter compatible with the extraction system, and the side facing the vessel mouth, a diameter compatible with the vessel mouth. Sealing elements are provided for use with the vessel mouth for sealing thereof with the coupling member. The union nut has an inner thread adapted to couple to the vessel mouth and an outer thread adapted to couple to the extraction system.

Abstract: An improved automatic central buffer coupling for rail vehicles includes a cone formed with a tip portion on the end of the cone having a convex surface and a funnel-shaped member for receiving the cone member of an opposite coupling which is formed with an inwardly inclined chamfer at the inlet opening thereof.

Abstract: A hose coupling device for multiple hose connections having a tightly fitted hose fitting comprises a plug portion, hose fitting means hose fitting pins and a socket portion consisting of a flange adaptor section and a spacer section. The flange adaptor section comprises a flange adaptor means having a plurality of bores, a releasable plate means connected to the flange adaptor means with a clamping bolt having a central bore receiving a guide pin means. The spacer section comprises a shell means with a plurality of bores for registering with the flange adaptor section bores and means connecting the spacer section bores to the releasable plate means.

Abstract: Sealing apparatus seals off between first and second member faces and about registered ports opening at the faces, the members being relatively movable. The apparatus comprises:A. first and second concentric tubular inserts carried by one of the members for relative telescopic movement, the inserts extending about the port in said one member, at least one of the inserts having an end portion projecting endwise outwardly relative to said one member to be forcibly engaged by the other member for inwardly displacing said one insert in response to said member relative movement toward one another, andB. elastomeric means located between said inserts to transfer compressive force from said one insert to the other insert in response to said inward displacement of the one insert, and to be compressively urged in an outward direction into annular sealing engagement with the face of said other member about the port mouth therein.

Abstract: Apparatus and method for orienting a pair of drill strings or the like in a predetermined manner in the center of a bore through a blowout preventer. The drill strings extend from a vessel floating on the surface of a body of water down through the preventer into a subsea wellhead installation. A first pair of opposed rams are actuated to move the drill strings into a predetermined central zone of the bore through the blowout preventer. These first rams operate under a predetermined maximum compressive force of the rams on the drill strings. Above this force, a second pair of opposed rams are activated to move the drill strings out of the predetermined central zone and into a final centrally oriented zone in the bore through the blowout preventer regardless of the position of the drill strings in the central zone.