A fluid activated continuous roll joint apparatus for use in various robotic applications. The continuous roll joint apparatus can include an outer housing, a plurality of collapsible hoses, and a rotor assembly. The outer housing can include a cylindrical inner cavity. The plurality of collapsible hoses can be disposed around a perimeter of at least a portion of the cylindrical inner cavity. The rotor assembly can include a plurality of rollers distributed radially around a rotor frame, where each roller of the plurality of rollers can be positioned to engage (pinch) a collapsible hose of the plurality of collapsible hoses. In an example, the continuous roll joint is activated when fluid is pumped through the plurality of collapsible hoses. Which rotates the rotor through inaction between the collapsible hoses and the rollers.

A swivel knuckle assembly for interconnecting a motor and a supply line. The knuckle assembly may include a bearing member to reduce a coefficient of friction. A locking mechanism is disclosed to connect members of the knuckle assembly.

A swivel knuckle assembly for interconnecting a motor and a supply line. The knuckle assembly may include a bearing member to reduce a coefficient of friction. A locking mechanism is disclosed to connect members of the knuckle assembly.

Each of the mechanical seal devices of a rotary joint includes a first shaft side seal ring attached to a shaft body and a first case slide seal ring attached to one side of the first shaft side seal ring as well as a second case side seal ring attached to a case body and a second shaft side seal ring attached to the second case side seal ring. A first communication flow passage is formed between a first sliding portion of the first seal rings and a second sliding portion of the second seal rings. A second communication flow passage is formed between the first sliding portion of a mechanical seal device disposed on one side in the axial direction and the second sliding portion of a mechanical seal device disposed on the other side in the axial direction in mechanical seal devices adjacent to each other.

Each of the mechanical seal devices of a rotary joint includes a first shaft side seal ring attached to a shaft body and a first case slide seal ring attached to one side of the first shaft side seal ring as well as a second case side seal ring attached to a case body and a second shaft side seal ring attached to the second case side seal ring. A first communication flow passage is formed between a first sliding portion of the first seal rings and a second sliding portion of the second seal rings. A second communication flow passage is formed between the first sliding portion of a mechanical seal device disposed on one side in the axial direction and the second sliding portion of a mechanical seal device disposed on the other side in the axial direction in mechanical seal devices adjacent to each other.

A fluid conduit connector system includes a first body having a neck extending from a first side, an opening in the neck, and a bore extending from the opening. The fluid conduit connector system further includes a second body having second and third sides, an opening in the second side, a bore extending from the opening, and an array of holes positioned around the bore and extending from the second side to the third side. Upon assembly, the bore of the first body is aligned with the bore of the second body, the second side of the second body is disposed adjacent to the neck, a tension flange is disposed around the neck, and a plurality of connection rods is coupled to the tension flange, each connection rod disposed in a corresponding hole of the array of holes and extending out of the third side of the second body.

A rotary union includes a housing having a shaft rotatably mounted in a bore. A plurality of annular plates is mounted on the shaft in spaced relation, and a plurality of spools is disposed in alternating fashion between the plurality of annular plates on the shaft. Each spool includes two seal rings creating mechanical face seals with adjacent annular plates. The shaft, the plurality of annular plates and the plurality of spools are arranged to assemble in a stacked arrangement, which is insertable as a whole into the cylindrical bore of the housing.

A rotary union includes a housing having a shaft rotatably mounted in a bore. A plurality of annular plates is mounted on the shaft in spaced relation, and a plurality of spools is disposed in alternating fashion between the plurality of annular plates on the shaft. Each spool includes two seal rings creating mechanical face seals with adjacent annular plates. The shaft, the plurality of annular plates and the plurality of spools are arranged to assemble in a stacked arrangement, which is insertable as a whole into the cylindrical bore of the housing.

Provided is a rotary joint capable of lubricating a sealing surface of a mechanical seal forming a fluid passage through which a gas flows using a liquid even when the liquid flows through only one fluid passage. A rotary joint 1 includes a plurality of mechanical seals 7 provided in an axial direction in an annular space A between a case body 2 and a shaft body 5 to form a first intermediate flow passage 41 that connects a first outer flow passage 31 and a first inner flow passage 61 of a first fluid passage 11 through which a liquid flows to each other and form a second intermediate flow passage 42 that connects a second outer flow passage 32 and a second inner flow passage 62 of a second fluid passage 12 through which a gas flows to each other. The first outer flow passage 31 and the first inner flow passage 61 are open at mutually different positions in the axial direction with the second intermediate flow passage 42 interposed therebetween, and connects an opening of the first outer flow passage 31 and an opening of the first inner flow passage 61 in the first intermediate flow passage 41. The first intermediate flow passage 41 is formed such that a liquid flowing through the first intermediate flow passage 41 lubricates first and second sealing surfaces 71a and 72a of the mechanical seal 7 forming the second intermediate flow passage 42.

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.