Motor dampening provisions are described. Incorporation and use of the motor dampener(s) in a rotary type drain cleaning machine enables elimination of a clutch in the machine. Also described are clutch-free drive systems using the motor dampener(s). Also described are torque countering members that are used in conjunction with the motor dampener(s).

Motor dampening provisions are described. Incorporation and use of the motor dampener(s) in a rotary type drain cleaning machine enables elimination of a clutch in the machine. Also described are clutch-free drive systems using the motor dampener(s). Also described are torque countering members that are used in conjunction with the motor dampener(s).

Apparatus for cleaning a surface with a liquid jet, the apparatus having: a primary fluid conduit having a longitudinal axis and two ends, a fluid-intake end and a fluid-exit end; a first motor-driven drive assembly configured to engage the primary fluid conduit and turn the primary fluid conduit about the primary-fluid-conduit longitudinal axis; a first motor configured to engage the first motor-driven drive assembly; a section of the primary fluid conduit being inside of an adjacent penetration sleeve; a section of the penetration sleeve being inside of a piston sleeve; the piston sleeve configured to engage the penetration sleeve and move the penetration sleeve back and forth along a penetration-sleeve linear path over a primary-fluid-conduit exterior surface; an actuator configured to engage the piston sleeve and move piston sleeve back and forth along a piston-sleeve linear path; a penetration-sleeve end being attached to an extension sleeve that has a first end and a second end; the extension-sleeve second end being attached to a swivel rod that has a first end and a second end; the primary-fluid-conduit fluid-exit end being attached to a fixed nozzle having a first end and a second end; the fixed-nozzle second end being attached to a swivel nozzle; the swivel-rod second end being attached to the swivel nozzle; the swivel nozzle configured to pivot between a fully extended position and a fully retracted position as the swivel rod respectively extends and retracts as the penetration sleeve moves back and forth; and a continuous fluid-flow channel that extends from the primary-fluid-conduit fluid-intake end through the swivel nozzle.

Apparatus for cleaning a surface with a liquid jet, the apparatus having: a primary fluid conduit having a longitudinal axis and two ends, a fluid-intake end and a fluid-exit end; a first motor-driven drive assembly configured to engage the primary fluid conduit and turn the primary fluid conduit about the primary-fluid-conduit longitudinal axis; a first motor configured to engage the first motor-driven drive assembly; a section of the primary fluid conduit being inside of an adjacent penetration sleeve; a section of the penetration sleeve being inside of a piston sleeve; the piston sleeve configured to engage the penetration sleeve and move the penetration sleeve back and forth along a penetration-sleeve linear path over a primary-fluid-conduit exterior surface; an actuator configured to engage the piston sleeve and move piston sleeve back and forth along a piston-sleeve linear path; a penetration-sleeve end being attached to an extension sleeve that has a first end and a second end; the extension-sleeve second end being attached to a swivel rod that has a first end and a second end; the primary-fluid-conduit fluid-exit end being attached to a fixed nozzle having a first end and a second end; the fixed-nozzle second end being attached to a swivel nozzle; the swivel-rod second end being attached to the swivel nozzle; the swivel nozzle configured to pivot between a fully extended position and a fully retracted position as the swivel rod respectively extends and retracts as the penetration sleeve moves back and forth; and a continuous fluid-flow channel that extends from the primary-fluid-conduit fluid-intake end through the swivel nozzle.

Apparatus for cleaning a surface with a liquid jet, the apparatus having: a primary fluid conduit having a longitudinal axis and two ends, a fluid-intake end and a fluid-exit end; a first motor-driven drive assembly configured to engage the primary fluid conduit and turn the primary fluid conduit about the primary-fluid-conduit longitudinal axis; a first motor configured to engage the first motor-driven drive assembly; a section of the primary fluid conduit being inside of an adjacent penetration sleeve; a section of the penetration sleeve being inside of a piston sleeve; the piston sleeve configured to engage the penetration sleeve and move the penetration sleeve back and forth along a penetration-sleeve linear path over a primary-fluid-conduit exterior surface; an actuator configured to engage the piston sleeve and move piston sleeve back and forth along the piston-sleeve linear path; a penetration-sleeve end being attached to an extension sleeve that has a first end and a second end; the extension-sleeve second end being attached to a swivel rod that has a first end and a second end; the primary-fluid-conduit fluid-exit end being attached to a fixed nozzle having a first end and a second end; the fixed-nozzle second end being attached to a swivel nozzle; the swivel-rod second end being attached to the swivel nozzle; the swivel nozzle configured to pivot between a fully extended position and a fully retracted position as the swivel rod respectively extends and retracts as the penetration sleeve moves back and forth; the swivel nozzle being attached to a nozzle pipe; the nozzle pipe being attached to a nozzle configuration that is configured to open and close a flapper door having a fluid exit orifice; and a continuous fluid-flow channel that extends from the primary-fluid-conduit fluid-intake end through the swivel nozzle.

A method of cleaning a jet pump assembly of a nuclear reactor may comprise inserting a cleaning tool into the jet pump assembly such that a front face of the cleaning tool is adjacent to an inner surface of the jet pump assembly and below a level of a first liquid in the jet pump assembly. The method may additionally comprise directing a plurality of front jets of a second liquid from a plurality of front orifices on the front face of the cleaning tool such that the plurality of front jets of the second liquid strikes the inner surface of the jet pump assembly. The method may further comprise maintaining a standoff distance between the front face of the cleaning tool and the inner surface of the jet pump assembly during the cleaning of the jet pump assembly.

A method of cleaning a jet pump assembly of a nuclear reactor may comprise inserting a cleaning tool into the jet pump assembly such that a front face of the cleaning tool is adjacent to an inner surface of the jet pump assembly and below a level of a first liquid in the jet pump assembly. The method may additionally comprise directing a plurality of front jets of a second liquid from a plurality of front orifices on the front face of the cleaning tool such that the plurality of front jets of the second liquid strikes the inner surface of the jet pump assembly. The method may further comprise maintaining a standoff distance between the front face of the cleaning tool and the inner surface of the jet pump assembly during the cleaning of the jet pump assembly.

A drain cleaner assembly including a base unit having a housing, a first portion of a drive arrangement supported by the housing, and a motor coupled to the drive arrangement, where the motor is operable to selectively drive the drive arrangement. A drum unit is removably coupled to the base unit. The drum unit includes a rotatable drum, a cable stored within the drum and selectively extendable out of the drum and into a drain, and a second portion of the drive arrangement, where the second portion of the drive arrangement includes a driven shaft extending along an axis of rotation of the rotatable drum, where the driven shaft is rotatably fixed to the rotatable drum, and wherein the first portion of the drive arrangement is configured to drive the driven shaft and the rotatable drum when the drum unit is coupled to the base unit.

A drain cleaner assembly including a base unit having a housing, a first portion of a drive arrangement supported by the housing, and a motor coupled to the drive arrangement, where the motor is operable to selectively drive the drive arrangement. A drum unit is removably coupled to the base unit. The drum unit includes a rotatable drum, a cable stored within the drum and selectively extendable out of the drum and into a drain, and a second portion of the drive arrangement, where the second portion of the drive arrangement includes a driven shaft extending along an axis of rotation of the rotatable drum, where the driven shaft is rotatably fixed to the rotatable drum, and wherein the first portion of the drive arrangement is configured to drive the driven shaft and the rotatable drum when the drum unit is coupled to the base unit.

A seam ripping assembly for use in preparing a coiled tubing operation in a production well, such as, for example, in the oil and gas industry. More particularly, the present invention pertains to a method and apparatus for seam dressing that can be used to efficiently remove a weld seam along an inner diameter on a section of coiled tubing, thereby allowing a coil connector to then be able to attach to an end of said section of coiled tubing.