Abstract: A fluid bearing nozzle assembly is disclosed that has a hollow cylindrical body, an inlet nut fastened to the cylindrical body, and a hollow tubular shaft member coaxially carried within the housing body and captured between the inlet nut and the body. The inlet nut has a stem portion extending into a central bore through the shaft member forming an inlet bearing area rotatably carrying the shaft member thereon. The shaft member has a spray head fastened thereto for rotation of the head with the shaft member. An inner wall of the housing body and an outer portion of the shaft have complementary shapes forming a regulating passage therebetween. The shaft has helical grooves that spiral around the shaft to one or both ends to impart rotation to the shaft and spray head.

Abstract: A high pressure rotary nozzle having a rotating shaft operating within a fixed housing wherein the of axial force which acts upon the shaft due to the liquid pressure at the shaft inlet is balanced by allowing passage of a small amount of the pressurized liquid to be bled to an area or chamber between the outside of the opposite end of the shaft and the inside of the housing where the liquid pressure can act axially in an opposing direction upon the shaft to balance the axial inlet force. The balance of axial forces is self-regulating by controlling escape of the liquid through a tapered or frusto-conical region between the shaft and housing. This further provides a liquid bearing between the two surfaces and allows use of interchangeable rotating jet heads having jet orifices which can be oriented in virtually any desirable configuration including axially forward of the nozzle.

Abstract: A high pressure rotary nozzle having a rotating shaft operating within a fixed housing wherein the of axial force which acts upon the shaft due to the fluid pressure at the shaft inlet is balanced by allowing passage of a small amount of the pressurized fluid to be bled to an area or chamber between the outside of the opposite end of the shaft and the inside of the housing where the fluid pressure can act axially in an opposing direction upon the shaft to balance the axial inlet force. The balance of axial forces is self-regulating by controlling escape of the fluid through a tapered or frusto-conical region between the shaft and housing. This further provides a fluid bearing between the two surfaces and allows use of interchangeable rotating jet heads having jet orifices which can be oriented in virtually any desirable configuration including axially forward of the nozzle.

Abstract: A high pressure rotary nozzle having a rotating shaft operating within a fixed housing wherein the of axial force which acts upon the shaft due to the liquid pressure at the shaft inlet is balanced by allowing passage of a small amount of the pressurized liquid to be bled to an area or chamber between the outside of the opposite end of the shaft and the inside of the housing where the liquid pressure can act axially in an opposing direction upon the shaft to balance the axial inlet force. The balance of axial forces is self-regulating by controlling escape of the liquid through a tapered or frusto-conical region between the shaft and housing. This further provides a liquid bearing between the two surfaces and allows use of interchangeable rotating jet heads having jet orifices which can be oriented in virtually any desirable configuration including axially forward of the nozzle.

Abstract: A unitary cartridge seal assembly for a high pressure liquid sealing connection between two relatively rotatable liquid passage members of a rotary nozzle or a swivel and a tool having such an assembly. The assembly comprises a thimble shaped or cylindrical housing having a flanged retainer fitting within an axial orifice to hold the components together while allowing sufficient axial movement to insure complete sealing of the respective elements. The assembly provides “drop-in” replacement of wearable parts of the rotary face seal of a high pressure water jet blasting tool.

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 method of generating a handoff candidate list (490) to provide to a mobile station (302) may include providing the mobile station in a multi-sector handoff state (360) with a unique combination of a plurality of sectors (362, 363, 364), and recording at least one target sector (371, 372, 373) selected from a plurality of available sectors (366) that is added to the unique combination of the plurality of sectors. The recording step may be iteratively performed whenever the mobile station is in the multi-sector handoff state with the unique combination of the plurality of sectors thereby defining the at least one target sector that has actually been used by the mobile station in the multi-sector handoff state with the unique combination of the plurality of sectors.

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 small diameter high pressure liquid spray nozzle assembly has a small diameter elongated cylindrical body with a tubular nozzle shaft rotatably supported within the body. A stack of several identical radial ball bearings within a sealed bearing chamber in the body rotatably supports the shaft. The ball bearings are immersed in said chamber in a viscous liquid to provide viscous damping to retard speed of rotation of the nozzle shaft. A rotary high pressure liquid sealing assembly within the body between a high pressure liquid inlet to the body and an inlet to the shaft confine the flow of high pressure liquid to a flow passage within the body isolated from the interior of the bearing chamber. The viscous damping retardation is independent of the direction of the rotary nozzle shaft.

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.