Abstract: A high pressure rotary swivel assembly for use in high temperature environments using a single source of fluid for operation and cooling, having an external sleeve to accommodate a low volume and/or low pressure fluid cooling circuit having a path over the majority of the external surface of the swivel body to absorb ambient heat, where the cooling circuit is fed by redirecting a small portion of the high pressure and high volume operating fluid.

Abstract: A multiple nozzle swivel assembly for mounting on a cable support stretched across the interior of a chamber to be scrubbed with high velocity jet streams or stretched along an array of objects to be cleaned as the swivel assembly traverses the cable from one end to the other. The cable passes through a coaxial bore in an elongated shaft carrying both a relatively stationary an input member for supply of high pressure liquid to the assembly and a rotatable output nozzle-carrying spray head member. The shaft is monolithic with multiple angularly spaced bores around the central bore and parallel thereto and sealed from the central bore carry high pressure liquid from the input member to the output spray head member with very low drag bearings and liquid seals being provided between relatively rotating liquid carrying components. The assembly includes multi-directioned nozzle elements on a rotatable spray head. Positive drive to rotate the spray head is achieved with a rotational speed controlling motor.

Abstract: A high pressure liquid sealing connection between two relatively rotatable liquid passage members of a rotary nozzle or a swivel. The connection is formed by two abutting relatively rotatable annular coaxial sealing members forming a high pressure liquid passage between the relatively rotatable members. Both sealing members are carried and kept coaxial by a seal holder carried by one of the relatively rotatable passage members. Both sealing members are forced axially relative to the seal holder by high pressure liquid flow at the sealing connection to maintain a dynamic sealing relationship between the sealing members and to force one of the sealing members into sealing contact with and rotation with the other of the relatively rotatable passage members. As the other sealing member substantially wears away by relative rotation of the sealing members it is forced axially relative to the seal holder and toward the one sealing member to maintain the sealing integrity of the sealing connection.

Abstract: A rotatable high pressure tool for cleaning hollow objects by forcing a high pressure fluid such as water from nozzles to create cleaning jet streams and use jet reaction at the tool to continually change the direction of the jet nozzles about a longitudinal axis of the tool while the jets are carried by a cross body rotating about an axis essentially perpendicular to the longitudinal axis. Each of the nozzles provides the same amount of reaction torque to rotate the cross body about its axis. This torque is selectively adjustable at the tool before use by similarly releasing, changing and reclamping the orientation of all nozzles relative to the cross body and by changing the discharge diameters of uniformly sized nozzle tips. The adjustable nozzles are interconnected by gearing so that the changes in orientation of all nozzles during adjustment will be the same.

Abstract: A high pressure liquid nozzle housing encloses a self-rotating speed-controlled nozzle. A cylindrical sleeve in the housing forms an inwardly facing friction surface engageable by a nozzle-driven friction generating speed control mechanism to provide increasing retarding force on the nozzle as nozzle speed increases for controlling maximum nozzle rotational speed. The speed control mechanism includes a radially expandable helical coil spring rotatable with the nozzle with its windings at low nozzle speeds slightly spaced from the sleeve. An input end of the coil spring is driven by the nozzle structure in a direction tending to unwind the spring and increase its outer diameter in response to rotation of the nozzle. An output end of the coil spring rotatably drives a cluster of centrifugal weights which are spring biased away from the sleeve and which at low nozzle rotation speeds also remain spaced from the sleeve.

Abstract: High pressure fluid apparatus having a swivel flow divider connected to a rotary power source and an accompanying power cylinder for transferring high pressure fluid from a stationary to a rotary medium and a fluid jet rotary bit. The swivel flow divider defines a pair of integral seal bearings which can be variably positioned by means of the power cylinder to divert substantially all of the fluid flow into a fluid conducting tube at high pressures, e.g. up to about 10,000 psi to about 20,000 psi to divert fluid flow to a relatively low pressure region surrounding the fluid conducting tube, or to apportion fluid flow between the tube and the low pressure region surrounding the tube. The fluid jet bit has a bit body including a wear resistant insert which can be removed from a fluid jet housing and mounting without subjecting fluid jet orifices secured in the latter to damage.