Dover Corporation

Other

Jack A McMath

James E Kesterman

Chester W Wood

Robert W Guertin

Paul R Wilder

Glenn E Moore

Eugene B Pemberton

William J Petter

Larry Lee Alderson

A drop tube employed in the discharge of fuel into a storage tank of the type having an inlet, riser pipe is described. The drop tube a tubular member and an overfill valve. The overfill valve comprises a valve member having open and closed positions which is controlled by a float mounted thereon. The drop tube is insertable through the riser pipe to a position wherein the float displaces the valve member towards its closed position when the fuel in the tank reaches a desired level. A depression in the tubular member receives the float to facilitate insertion of the drop tube through the riser pipe. The valve member is freely pivotal from its open position to its closed position, being displaced thereto by the force of fuel discharged into the tank. A pressure relief valve provided to reduce the forces on the valve. A bleed valve is also provided for bleeding fuel from above the valve when it is in its closed position. Further mechanism, actuated by the float, close the bleed valve when the level of fuel is at a predetermined height above its desired level.

Drop tubes and overfill valves therefor

A drop tube employed in the discharge of fuel into a storage tank of the type having an inlet, riser pipe is described. The drop tube a tubular member and an overfill valve. The overfill valve comprises a valve member having open and closed positions which is controlled by a float mounted thereon. The drop tube is insertable through the riser pipe to a position wherein the float displaces the valve member towards its closed position when the fuel in the tank reaches a desired level. A depression in the tubular member receives the float to facilitate insertion of the drop tube through the riser pipe. The valve member is freely pivotal from its open position to its closed position, being displaced thereto by the force of fuel discharged into the tank. A pressure relief valve is provided to reduce the forces on the valve. A bleed valve is also provided for bleeding fuel from above the valve when it is in its closed position. Further mechanism, actuated by the float, close the bleed valve when the level of fuel is at a predetermined height above its desired level.

Drop tube having an overfill valve

A dual hose swivel has one end connected to a gasoline dispensing nozzle and its other end connected to a liquid supply hose and a vapor recovery hose. The swivel has a main body rotatably supported by the nozzle for rotation about a first axis and a pair of swivel tails, which are connected to each other, rotatably supported by the main body for rotation about a second axis substantially perpendicular to the first axis. Each of the swivel tails has one of the hoses connected to a separate threaded passage. The main body can rotate through 360.degree. relative to the nozzle body and the swivel tails can rotate together about the second axis through at least 180.degree..

Nozzle having dual hose swivel

A liquid spill container and method of making and installing the same are provided wherein such container has a side wall comprised of at least two separate portions which are detachably fastened together. One of the portions defines the sole structure of the container which is adapted to be embedded in a fixed manner in an associated substrate to provide the sole support for the container in such substrate and the other of the portions being detachable from the one portion with the one portion embedded in the substrate to enable replacement of such other portion.

Liquid spill container and method of making and installing same

A liquid dispensing nozzle has a check valve mounted adjacent the front of the nozzle body to seal an annular vapor return passage, which is between the spout and a bellows, to prevent communication through vapor return passages in the nozzle to the vapor recovery equipment unless the spout is disposed in the fill pipe of a vehicle tank. One of the elements of the check valve for forming this seal is mounted on the spout and the other is mounted on a member, which is slidably supported by the nozzle body.

Liquid dispensing nozzle having a sealing arrangement for vapor return

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 force being detectable and once detected serves as a warning that the pressure of the fluid under pressure must be relieved before completely disconnecting the members.

Quick connect-disconnect coupling

Liquid flow through an automatic shut-off nozzle is automatically stopped if the fill pipe opening of the tank being filled is not sealed so that vapor return means can carry vapor from a tank being filled to vapor recovery equipment. If the sealing means is not effective when the spout is disposed in a fill pipe opening, a valve, which controls the liquid flow through the body of the nozzle, is automatically shut off.

Automatic shut-off nozzle with vapor return seal

An automatic shut-off nozzle has a diaphragm responsive to the vapor pressure in a sealed tank to stop the liquid flow through the nozzle when a predetermined pressure exists in the sealed tank. The force of a spring, which acts on the side of the diaphragm not exposed to the vapor pressure in the tank, is adjusted to insure that the flow is stopped at the predetermined pressure.

Automatic shut-off nozzle having an arrangement for controlling when

A liquid dispensing nozzle has an eccentrically mounted seal at one end of a bellows, which is disposed in spaced relation to the spout of a nozzle to form an annular vapor return passage therebetween, to engage a fill pipe of a tank to form a seal therewith when the spout is disposed therein so that vapor flows from the tank to the annular vapor return passage of the nozzle. The seal includes a compressible member for engaging the fill pipe, a swivel plate, and a cap surrounding the bellows whereby the seal is removably fastened to the bellows for easy replacement. The swivel plate is pivotally connected to a spring, which surrounds the spout, so that the seal can pivot about two orthogonal axes with respect to the spout. The pivotal connection of the swivel plate to the spring is on top of the spout so that the maximum force of the spring is applied to the maximum eccentric surface of the seal.

Liquid dispensing nozzle having vapor recovery sealing arrangement

A liquid dispensing nozzle has an annular member of a relatively soft material at one end of a bellows, which is disposed in spaced relation to the spout of the nozzle to form an annular vapor return passage therebetween, to engage the fill pipe to form a seal therewith when the spout is disposed therein so that the vapors flow from the tank to the annular vapor return pasage of the nozzle. The soft seal member is removably fastened to the end of the bellows for easy replacement. The spout has a pair of latch rings thereon spaced from each other with each having a retaining lug to enable the spout to be retained within any type of fill pipe since one of the lugs on one of the latch rings is always capable of being retained by the lip of the fill pipe opening.

Liquid dispensing nozzle having a sealing arrangement for vapor recovery

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 after the adapter has been locked to the coupler. The adapter cannot be released from the coupler until after the poppet valve has been moved from its open position to its closed position by rotation of the rotatable shaft in the opposite direction.

Growing community of inventors

Fort Thomas, KY, United States of America

Jack A McMath