A coupler includes a first joint member, a holder, a second joint member, a sleeve, and a valve. The holder is attached to an outer circumference of the first joint member. The second joint member is detachably attached to the holder. The sleeve covers an outer circumferential surface of the holder and is displaceable by a first spring member. The valve is attached into the first joint member and changes the communication in the first joint member.

A dry break coupler of a coupling device has an adapter connected thereto in an arrangement in which the adapter must be disposed within the coupler in the position in which it is locked to the coupler before a rotatable shaft can be rotated to initially lock the adapter to the coupler. The coupler has a poppet valve, which opens a valve in a passage in the adapter when the poppet valve is opened to provide communication therebetween, movable to its open position by the rotatable shaft only afte...

An improved type "E" railway coupler with a top and bottom shelf is provided for reducing the possibility of derailments of railroad cars caused by accidental disengagement of interlocking couplers. The improved coupler has a top planar surface for fixedly carrying the top shelf and has a bottom planar surface for fixedly carrying the bottom shelf. The top shelf includes an upper abutment surface limiting the upward vertical movement of a mating coupler and has a set of downwardly-extending copl...

A coupler for coupling two conduits together such as a loading arm and a ship's manifold in which jaw assemblies reach around a ship's pipe flange to engage the flange and draw the coupler into sealing engagement therewith. Provisions are made for coupling to ship's manifolds of varying sizes by the use of an adapter flange which bridges between the coupler and ship's flange.

A coupler ballhead receiving socket has a longitudinally extending slot adjacent it in the mounting bracket that is long enough to accommodate a channel-shaped latch having an upwardly and forwardly extending handle portion for first tilting the latch with the ballhead retaining clamp, that is pivotally connected to the front end portion of the latch, rearwardly to an open position holding the clamp in retracted relationship to the socket. The clamp is pivotally connected to the socket at its on...

A coupler for a trailer and the like, the coupler having a body and cap hinged together at a front portion and closeable along parting faces with an internal cavity formed by the body and the cap for a ball which is conventionally secured to the towing vehicle. The body forms a major portion of the ball cavity and includes a ball centering upper surface which extends substantially laterally across the upper surface of the cavity forming a self-centering bearing surface for the ball. A load distr...

A coupler for releasably connecting together a pair of structures at least one of which is characterized by a recess having an entry opening configured so that a locking means can be inserted through the opening and rotated in the recess. This prevents withdrawal of the locking means and thereby couples together the pair of structures. In the preferred embodiment the locking means includes a pair of locking heads for disposition in decoupling positions for insertion within confronting recesses i...

This invention relates to a fueling coupler that is releasably connectable to a fuel tank adaptor by means of pivotal locks movable to latch positions for holding the adaptor to the coupler and to unlatch positions for releasing the adaptor. The locks have undercut surfaces engageable with an undercut surface on a sleeve mounted on the coupler. When the coupler is not connected to the adaptor, the undercut surfaces hold the locks in their unlatched positions and also hold the sleeve in a retract...

An adjustable coupler is on opposite ends of a cable for securing a pre-established tension in the cable. Such pre-adjusted tension is effected by conventional tensioning mechanism applied between a pair of nuts threaded on opposite ends of the cable. The coupler itself involves an elongated turnable coupling body which spans ends of the cable and in which a first nut is threaded in one of its ends and a second nut is threaded in its other end. The first nut is engageable with abutment means on ...

A coupler or plug adapter for quickly converting a plug, which is used in hydraulic and pneumatic units, into a socket by attaching said adapter to the plug with a simple manual coupling manner in order to enable the plug to be coupled with another plug in fluid tight relationship is disclosed.