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AssigneeSwagelok Company
InventorsPeter C. Williams, Lonnie E. Johnston, John D. Karkosiak, Gerald A. Babuder, Sanjeey S. Moghe
Estimating the term…
An intrinsic gauging device for a ferrule type tube fitting of the type having a coupling nut, a coupling body and at least one ferrule, includes a precisely formed marking on the coupling body that is visually perceptible when the coupling is in a finger tight position, and that is covered or visually imperceptible or otherwise has a predetermined relationship with the coupling nut when the fitting has been initially pulled-up. In a preferred form, the marking is realized as a precision groove or recess machined into a surface of the coupling body. The groove can be made more easily visually perceptible such as by roughening or knurling the surface, or coloring the surface, for example. The groove defines an edge at a precise position that corresponds to a predetermined axial displacement of the nut relative to the body for initial pull-up. The marking may also be formed with a precise dimension such as an axial length to provide a second edge that corresponds to a predetermined axial displacement of the nut relative to the body beyond initial pull-up for fitting assemblies that are remade.
Intrinsic gauging assembly for a ferrule type tube fitting, comprising:
Intrinsic gauge for a ferrule type tube fitting assembly, comprising:
A method for gauging proper pull-up of a coupling nut on a coupling body in a ferrule type fitting, comprising the steps of:
Intrinsic gauging assembly for a tube fitting of the type comprising a body, a nut threadably installed on the body and at least one ferrule, the assembly comprising:
Intrinsic gauging for a tube fitting of the type having a body, a nut threadably coupled to the body and at least one ferrule, comprising:
Dependencies are inferred from the claim text.