A rotary joint which supplies and discharges a liquid to and from a container which is revolved around a rotation axis, the rotary joint includes: a shaft body which is immovably provided; a tube body into which the shaft body is inserted and which is rotated around the shaft body; a shaft-side supply flow path; a shaft-side discharge flow path; a tube-side supply flow path; a tube-side discharge flow path; a supply communication flow path; and a discharge communication flow path, the tube-side supply flow path is inclined, and the tube-side discharge flow path is inclined.

A device for transmission of rotary motion and transfer of a fluid medium, comprising a planetary gear train for transmission of rotary motion about a main axis which has at least one reduction stage which is provided with a sun gear, which rotates about the main axis, and a toothed ring gear which are mutually concentric and between which at least two planetary gears are engaged which are supported in rotation at least about the respective longitudinal axes which are parallel to the main axis by a planetary gear carrier; such planetary gear train is provided with a driving input sun gear and with an output ring gear and with an output planetary gear carrier, of which one can move in rotation about the main axis with respect to the other; and a rotary joint which extends externally to the planetary gear train for transfer of the fluid medium.

Embodiments of the present disclosure may be directed to a swivel joint for connecting hydraulic oil between a lower body of a construction machine and an upper body rotatably supported by the lower body, the swivel joint including: a rotation support body including a first body supported by the lower body and a second body rotatably coupled to the first body and rotating together with the upper body when the upper body rotates; and a sensor supported by the rotation support body to detect rotation of the upper body.

Embodiments of the present disclosure may be directed to a swivel joint for connecting hydraulic oil between a lower body of a construction machine and an upper body rotatably supported by the lower body, the swivel joint including: a rotation support body including a first body supported by the lower body and a second body rotatably coupled to the first body and rotating together with the upper body when the upper body rotates; and a sensor supported by the rotation support body to detect rotation of the upper body.

A rotary milking parlor swivel comprising a stationary central core defining a milk line and a media inlet port; a rotating sleeve disposed at least partially around the stationary central core, and the rotating sleeve includes a first segment defining a milk inlet port in communication with the milk line and a second segment defining a media outlet port in communication with the media inlet port.

An unmachined cast body for a pipe fitting, the cast body includes a first body end and a second body end disposed opposite from the first body end, the cast body defining an axis extending from the first body end to the second body end, the cast body defining a midpoint between first body end and the second body end, a centerline of the cast body defined at the midpoint perpendicular to the axis, a first distance from the centerline to the first body end being equal to a second distance from the centerline to the second body end, an inner body surface defining a fitting bore extending through the cast body from the first body end to the second body end, and an outer body surface spaced from the inner body surface, the outer body surface defining a first frustoconical shape and a second frustoconical shape.

An unmachined cast body for a pipe fitting, the cast body includes a first body end and a second body end disposed opposite from the first body end, the cast body defining an axis extending from the first body end to the second body end, the cast body defining a midpoint between first body end and the second body end, a centerline of the cast body defined at the midpoint perpendicular to the axis, a first distance from the centerline to the first body end being equal to a second distance from the centerline to the second body end, an inner body surface defining a fitting bore extending through the cast body from the first body end to the second body end, and an outer body surface spaced from the inner body surface, the outer body surface defining a first frustoconical shape and a second frustoconical shape.

A method and fluid connection system to fluidly connect a fracturing manifold to a fracturing tree. The method includes fluidly connecting a plurality of flexible flowlines between the manifold outlet of a fracturing manifold module and the fracturing tree such that fluid from the manifold outlet is distributed into the flexible flowlines and into the fracturing tree to avoid abrupt or right angle changes in direction in all fluid connections at the fracturing tree and between the manifold outlet and the fracturing tree. The fluid connection system includes a flow distribution block having a single inlet and a plurality of outlets, and distributes fluid flow between the single inlet and the plurality of outlets without abrupt or right angle changes in direction. The flexible flowlines have a first end fluidly connected to one of the plurality of outlets, and a second end fluidly connected to the fracturing tree.

A method and fluid connection system to fluidly connect a fracturing manifold to a fracturing tree. The method includes fluidly connecting a plurality of flexible flowlines between the manifold outlet of a fracturing manifold module and the fracturing tree such that fluid from the manifold outlet is distributed into the flexible flowlines and into the fracturing tree to avoid abrupt or right angle changes in direction in all fluid connections at the fracturing tree and between the manifold outlet and the fracturing tree. The fluid connection system includes a flow distribution block having a single inlet and a plurality of outlets, and distributes fluid flow between the single inlet and the plurality of outlets without abrupt or right angle changes in direction. The flexible flowlines have a first end fluidly connected to one of the plurality of outlets, and a second end fluidly connected to the fracturing tree.

A work vehicle includes: a power transmission shaft drivable to rotate; a shaft holder holding the power transmission shaft in such a manner that the power transmission shaft is rotatable; and a hydraulically operable section configured to operate in response to receiving operating oil, the power transmission shaft including: a shaft groove extending entirely around an outer circumferential portion of the power transmission shaft; an inlet port extending inside the power transmission shaft in a radial direction of the power transmission shaft and connected with the shaft groove; and a supply oil passage extending inside the power transmission shaft in a longitudinal direction of the power transmission shaft and connected with the inlet port inside the power transmission shaft.