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US 6,488,221 B1Granted
Self-aligning, spring-disk waterjet assembly
AssigneeMaxtec, LLC
InventorMichael C. McDonald
Life of this patent
Estimating the term…
Abstract
A spring disk with a concentric through bore and a concentric counter bore of specific depth used to hold an orifice against a lapped surface of a nozzle cap in a waterjet assembly. Dimensions are chosen to provide adequate restraint without the need to force the orifice onto the spring disk. When orifice, spring disk and the retaining cap are assembled and the cap is tightened on the inlet nozzle, the spring disk is forced to the cap surface and the orifice becomes securely held and centrally aligned within the assembly.
Claims19
A waterjet orifice assembly comprising:
- (a) a high pressure tubing having a central bore and a threaded end;
- (b) a nozzle cap, said nozzle cap having threads sized and shaped for complementary mating engagement with said threaded end of said high pressure tubing, said nozzle cap having an outlet bore, and, adjacent said nozzle cap outlet bore, an interior orifice receiving surface;
- (c) a spring disk, said spring disk having an overall diameter larger than the diameter of said central bore in said high pressure tubing, said spring disk further comprising a counterbore of preselected height, said counterbore further comprising a flange portion;
- (d) at least one orifice, said at least one orifice having a central bore sized and shaped for escapement of high pressure fluid therethrough, said at least one orifice having a height at least slightly larger than said preselected height of said counterbore of said spring disk, said at least one orifice removably mounted in said counterbore of said spring disk;
- and
- (e) wherein said spring disk is clamped between said nozzle cap and said high pressure tubing, so as to force said at least one orifice downward against said interior orifice receiving surface of said nozzle cap.
3 more elements
A waterjet orifice assembly comprising:
- (a) a high pressure tubing having a central bore and a threaded end;
- (b) a nozzle cap, said nozzle cap having threads sized and shaped for complementary mating engagement with said threaded end of said high pressure tubing, said nozzle cap having an outlet bore, and, adjacent said nozzle cap outlet bore, an interior counterbore having an orifice receiving surface;
- (c) a spring disk, said spring disk having an overall diameter larger than the diameter of said central bore in said high pressure tubing, said spring disk further comprising a centrally located bore for passage of high pressure fluid therethrough;
- (d) an orifice, said orifice having a central bore sized and shaped for escapement of high pressure fluid therethrough, said orifice having a height at least slightly larger than said preselected height of said interior counterbore of said nozzle cap, said orifice removably mounted in said interior counterbore of said nozzle cap;
- and
- (e) wherein said spring disk is clamped between said nozzle cap and said high pressure tubing, so as to force said orifice downward against said orifice receiving surface of said interior counterbore of said nozzle cap.
3 more elements
Dependencies are inferred from the claim text.