Abstract: A quick connect-disconnect coupling for a fluid conduit structure and method of making same are provided wherein the conduit structure has cam devices for connecting and disconnecting a coupler member and an adapter member comprising the coupling and the cam devices cooperate during disconnection of the members to provide a disconnecting movement until a particular position is reached at which position the disconnecting movement is reversed and becomes an incremental connecting movement for a predetermined increment before allowing the members to be completely disconnected and in the event fluid under pressure is present in the conduit structure which has the coupler and adapter members connected therein the connecting movement of the cam devices is subjected to resistance by the fluid under pressure with the resistance being transmitted through the cam devices as an opposing force which serves to impede the incremental movement by resisting any opening force applied to the cam devices with such opposing forc

Abstract: A securing device for attaching and holding a press plate spigot to a base member of a filter press. The device includes lugs which are received through openings in the spigot, the lugs being attached to the base member levers having a crank arm made up of protruding portions and a cam surface and having the protruding portions received in cutouts of the lugs so that levers are rotated about an arc for having the cam surfaces urge and hold the spigot against the base plate.

Abstract: A fitting for mounting to the ends of smooth wall tubes, particularly, expanded end tubes and beaded or barbed end tubes. The fitting grips behind the expansion or beaded end on the tube and seals on the tube outer diameter. The fitting also has a pressure assist design that furnishes increased sealing and gripping action with increase in sealing pressure.

Abstract: A quick-disconnect cam locking safety coupling has a hollow male plug having an external peripheral groove. The plug is received in a socket. The socket has a pair of opposed openings opposite the peripheral groove. A gasket seals between the male plug and the socket. A pair of cam members each has a lever lying adjacent the socket and a cam portion passing through one of said side openings and engaging the peripheral groove. Each cam member is pivotally connected to the socket for outward movement of the levers away from the socket to disengage the cam portions from the peripheral groove. Each cam member is locked in the groove engaging position by a removable wire pin engaged by at least one lug on the socket and adapted to limit the outward movement of the cam member lever.

Abstract: A fluid coupling including an elongate female section with front and rear ends, a central flow passage, means to connect the front end with a fluid conductor and a central cylindrical socket entering its rear end and defining a flat bottom; an annular sealing ring positioned in the socket adjacent said bottom; an elongate male section with front and rear ends, a central flow passge and means at its rear end to connect with a fluid conductor; the male section is slidably engaged with the socket in the female section with its front end engaging said seal; a mechanical means is provided to hold the male section forwardly in and relative to the female section with said ring clamped tight between said bottom and front end of the male section; the coupling includes means to retain the ring in the socket and including a plurality of circumferentially spaced longitudinally extending, radially inwardly projecting ring engaging ribs in the socket and about which adjacent portions of the ring flow to establish conformed

Abstract: A quick-acting closure unit for temporarily sealing the open end of a line used to convey a fluid under pressure. A cylindrical sleeve having a lower section that is tapered inwardly is passed over the open end of the line which contains a collapsible jaw means slidably mounted within the lower section that encircles the line. A cup-like member, which is also slidably mounted in the sleeve, is passed over the open end of the line and contains a sealing assembly that, when compressed, produces a fluid-tight seal between the cup and the line. A camming lever is arranged to act between the sleeve and the cup to force the cup downwardly into driving contact with the jaw means. The downward movement of the cup initially causes the seal to be compressed thereby closing off the line and then forces the jaws into holding contact with the line to secure the unit in a sealing posture thereon.

Abstract: This invention relates to a fitting for mounting to the ends of smooth wall tubes, particularly smooth wall tubes having a bead on the ends thereof. The fitting both grips and seals the inside diameter of the tube, with positive adjustable handle torque action.

Abstract: A coupling having male and female coupling members, at least one coupling lever pivotally mounted on the female coupling member and having a cam portion engageable in a groove in the male coupling member for releaseably coupling the male and female coupling members together, and at least one safety locking device for locking the coupling lever against accidental displacement from its coupling position. The safety locking device includes a reciprocally mounted locking pin or member, a spring for biasing the locking pin to a locking position where it overlies the coupling lever in its coupling position to block movement of the coupling lever to its uncoupling position, and a manually manipulatable lever member engaging the locking pin and pivotal to retract the locking pin to a lock-release position.

Abstract: This invention relates to a fitting for mounting to the ends of smooth wall tubes. The fitting grips on the outside diameter of the tube, and also seals on its inside diameter, with positive adjustable handle torque action. The counter forces of ID sealing and OD gripping at the same point eliminate the possibility of tube distortion especially on minimum wall tubing even at elevated pressures.

Abstract: The present coupling is intended to connect a tubular member to a further member such as a coupling sleeve or the like. The further member has an aperture for insertion of the tubular member and a hole extending substantially tangentially relative to the aperture and in partial overlap with the aperture. A locking pin with a flattened side region is inserted into the hole and then rotated to interlock the tubular member and the further member by deforming the tubular member. The locking pin may, for example, be a hollow sleeve with a longitudinal slot in the wall of the sleeve to provide said flattened region. The edges adjacent to the slot in the sleeve may be bent inwardly to facilitate the rotation of the sleeve type locking pin.

Abstract: A joint between two members and a gasket therefor. The members have transverse annular opposed faces. The gasket is a ring having a base and a frusto-conical lip extending radially inward from the base. The base is adapted to be clamped between the two faces of the members and has serrations on one side thereof for establishing sealing contact with one of the faces. The frusto-conical lip extends axially toward the other face and is subject to fluid pressure for ensuring sealing contact therewith.

Abstract: A quick-action pipe or hose coupling made of a plastics material comprising a male and female member for attachment to respective free ends of first and second pipes to be coupled together, the female member being shaped to receive said male member and having at least two locking members thereon, each locking member having first and second parts for cooperation with said male member to grip and retain it in the female member, said first part being shaped to cooperate with the male member so that said pipes are drawn together when the locking member is moved from a release position to a clamping position and said second part having an abutment surface which abuts against a corresponding abutment surface on the male member when the lever is in its clamping position to prevent axial separation of the pipes.

Abstract: A coupling is disclosed made up of a female member and a male member adapted to fit together. The male member has an outer peripheral groove and the female member has fastening means including levers swingably connected to it. The levers can swing into alignment with the axis of the coupling to clamp the male member firmly against the seal in the female member. An improved arrangement is provided for holding the levers in place. The arrangement includes spring loaded detent balls in countersinks. The balls project out the side of ears next to the levers. The spring may be leaf springs overlying the detent balls, urging the detent balls into engagement with chamfered edges of the levers. The detent balls prevent the levers from inadvertently rotating to release the coupling due to vibration or ther reasons.