Additive manufactured hydraulic swivel bolt; and method

A hydraulic swivel system comprising:

• a U-shaped fluid conveyance structure having a monolithic construction provided by additive manufacturing, the U-shaped fluid conveyance structure including a main body having first and second opposite ends, the U-shaped fluid conveyance structure also including a first shaft that projects from the first end of the main body and a second shaft that projects from the second end of the main body, the first shaft being unitary with the first end of the main body and the second shaft being unitary with the second end of the main body, the first and second shafts being parallel and both projecting outwardly from the main body in a common direction;
• the U-shaped fluid conveyance structure defining first and second fluid passages that extend through the main body and along the first and second shafts, the first and second fluid passages having smooth curved transitions at the first and second ends of the main body for transitioning from the main body to the first and second shafts;
• a first sleeve mounted on the first shaft and being configured to swivel about the first shaft, the first sleeve including first and second outer hose connection locations, the hydraulic swivel system defining a first sealed annular chamber between the first sleeve and the first shaft and a second sealed annular chamber between the first sleeve and the first shaft, the first sealed annular chamber being in fluid communication with the first fluid passage and the first outer hose connection location and the second sealed annular chamber being in fluid communication with the second outer hose connection location and the second fluid passage;
• a second sleeve mounted on the second shaft and being configured to swivel about the second shaft, the second sleeve including a third outer hose connection location, the hydraulic swivel system defining a third sealed annular chamber between the second sleeve and the second shaft, the third sealed annular chamber being in fluid communication with the first fluid passage and the third outer hose connection location;
• and
• a third sleeve mounted on the second shaft and being configured to swivel about the second shaft, the third sleeve including a fourth outer hose connection location, the hydraulic swivel system defining a fourth sealed annular chamber between the third sleeve and the second shaft, the fourth sealed annular chamber being in fluid communication with the second fluid passage and the fourth outer hose connection location.