Dover Corporation

Daniel M Allen

Richard L Fahl

Todd W Anderson

Christopher Robert Moses

A low profile locking mechanism for securing a lever arm of a coupler in a locked position interlocks with the side surface of the lever arm. The locking mechanism is formed from low cost resiliently deformable material that is protected against impact by the lever arm.

Lock for coupling cam arms

A coupling for connecting fluid conduits comprises a coupler and an adapter. The coupler has a frusto-conical seat at its distal end. Fixed and pivotal jaws project beyond the frusto-conical seat and are engageable with a clamping surface on the adapter. A lever operated, cam member swings the pivotal jaw to a position in which the coupler is locked in sealed relation on the adapter. An interlock rod prevents rotation of the lever from this rest position unless the coupler is positioned to be locked on the adapter. The coupler and adapter each comprise normally closed poppet valves. When the operating lever is swung from its rest position to a ready position, the pivotal jaw is swung to its locking position. When the operating letter is swung to a further angular extent, to a full flow position, the coupler poppet is displaced outwardly by a crank/link mechanism. When the coupler poppet is so displaced, it engages the adapter poppet and positions both poppets in open positions, interiorly of an adapter housing passageway. Manual release means require selective actuation for the operating lever to be swung from the rest position to the ready position and to permit the lever to be swung from the ready position to either the rest position or the full flow position.

Couplings for joining fluid conduits

A quick connect/disconnect coupling comprises locking levers. Pull rings facilitate pivoting of the locking levels to a release position. The pull rings are resiliently mounted on the levers in positions that prevent the pulls rings from interfering with movement of the locking levers to their locking positions.

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Middletown, OH, United States of America

Daniel M Allen