Swivel joint with uniform ball bearing requirements

  • US 9,964,245 B2
  • Filed: 10/27/2014
  • Issued: 05/08/2018
  • Est. Priority Date: 07/03/2007
  • Status: Active Grant
First Claim
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1. A swivel joint, comprising:

  • a male connector having a central axis, a terminal end, a male main bearing race, a male center bearing race on a side of the male main bearing race opposite from the terminal end, and a male support bearing race on a side of the male center bearing race opposite the male main bearing race, the male support bearing race having a diameter greater than diameters of the male main bearing race and male center bearing race;

    a female connector coaxially interconnected with the male connector along the central axis, a distal end of the male connector being inserted into the female connector, the female connector having female main, female center, and female support bearing races that respectively form cavities with the male main, male center, and male support bearing races, such as to define main, center, and support bearing cavities, the female support bearing race being closer to a rim of the female connector than the female main bearing race;

    a step circumscribing the male connector between the support and center bearing races that defines a radial change of the male connector;

    a same number of balls in each of the main, center, and support bearing cavities, the same number of balls having a same diameter, wherein each of the main, center, and support bearing cavities is filled with the same number of balls to a capacity such that no additional ball of the same diameter can be added to each of the main, center, and support bearing cavities in addition to the same number of balls.

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