Title:
表示装置をもつ継手
Document Type and Number:
Japanese Patent JP4172935
Kind Code:
B2
Abstract:
An intrinsic gauging device for a ferrule type tube fitting (10) of the type having a coupling nut (14), a coupling body (12) and at least one ferrule (32), 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 (50) 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 (50b) 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.
Inventors:
Williams, Peter See
Ronnie Yee, The Jonston
Kirkosiak, Jiyoung Day
The Babder, The Ellerdo A.
Mogue, Sanjeeve S
Gary Dubrieu, Xiehuel
Ronnie Yee, The Jonston
Kirkosiak, Jiyoung Day
The Babder, The Ellerdo A.
Mogue, Sanjeeve S
Gary Dubrieu, Xiehuel
Application Number:
JP2001523562A
Publication Date:
October 29, 2008
Filing Date:
September 12, 2000
Export Citation:
Assignee:
Swagelok Company
International Classes:
F16L19/08; F16B31/02; F16L19/00; F16L19/06; F16L19/065
Domestic Patent References:
| JP6082490U | ||||
| JP64045082U | ||||
| JP8028763A | ||||
| JP63121885U | ||||
| JP4175595A | ||||
| JP63121884U |
Attorney, Agent or Firm:
Patent business corporation Odashima patent office
Heikichi Odashima
Heikichi Odashima