Swivel joint with coated surfaces
AssigneeCaterpillar Inc.
InventorsZachary Alan Schramm, Bradley James Briars, Robert E. Riedel, JR.
Life of this patent
Estimating the term…
Abstract
A swivel joint includes a first pipe section and a second pipe section. The pipe sections may define a flow path via which fluid passes through the swivel joint. One or more surfaces proximate a junction of the first pipe section and the second pipe section may be selectively coated to resist wear from erosion, corrosion, and or abrasion.
Claims20
A swivel joint comprising:
- a first pipe section comprising:
- a first pipe inlet;
- a first pipe outlet;
- a first pipe outlet face circumscribing the first pipe outlet;
- a first pipe bore extending from the first pipe inlet to the first pipe outlet, the first pipe bore including:
- a first pipe outlet section proximate the first pipe outlet and having a first pipe outlet diameter,
- a first pipe main bore section between the first pipe inlet and the first pipe outlet section and having a first pipe main bore diameter smaller than the first pipe outlet diameter, and
- a first transition section extending between the first pipe main bore section and the first pipe outlet section;
- and
- a first bearing race section proximate the first pipe outlet;
- a second pipe section comprising:
- a second pipe inlet;
- a second pipe outlet;
- a second bearing race section proximate the second pipe inlet and configured to cooperate with the first bearing race section of the first pipe section to allow rotation of the first pipe section relative to the second pipe section;
- a seal disposed between and in contact with the first pipe outlet face and a second pipe inlet face circumscribing the second pipe inlet;
- and
- a coating on at least one of the first pipe outlet face, the first pipe outlet section, and at least a portion of the first transition section, the first pipe main bore section and the first bearing race section being substantially free of the coating.
A pipe section for use in a swivel joint, the pipe section comprising:
- a pipe inlet;
- a pipe outlet;
- a pipe outlet face circumscribing the pipe outlet;
- a pipe bore extending from the pipe inlet to the pipe outlet, the pipe bore including:
- a pipe main bore section extending at least partially between the pipe inlet and the pipe outlet, and
- an outlet section extending between the pipe main bore section and the pipe outlet;
- a bearing race section proximate the pipe outlet, the bearing race section being configured to cooperate with a bearing race section of a second pipe section;
- and
- a coating on the pipe outlet face and at least a portion of the outlet section.
A method of manufacturing a first pipe section for use in a swivel joint, the first pipe section including a first bearing race configured to cooperate with a second bearing race of a second pipe section to allow for rotational movement of the first pipe section relative to the second pipe section, the first pipe section comprising a first pipe inlet;
- a first pipe outlet;
- a first pipe bore extending from the first pipe inlet to the first pipe outlet;
- and a first pipe outlet face circumscribing the first pipe outlet, the first pipe bore including:
- a first pipe outlet section proximate the first pipe outlet and having a first pipe outlet diameter, a first pipe main bore section between the first pipe inlet and the first pipe outlet section and having a first pipe main bore diameter smaller than the first pipe outlet diameter, and a first transition section connecting the first pipe main bore section and the first pipe outlet section, the method comprising:
- applying a coating to the first pipe outlet face;
- applying the coating to the first pipe outlet section;
- and
- applying the coating to at least a portion of the first transition section,
- wherein the first pipe main bore section and the first bearing race are substantially free of the coating.
Dependencies are inferred from the claim text.