# US 2013/0154261 A1 · Pull-up by torque fitting with female threaded nut and integral dynamic wedge > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0154261 A1 - Document ID: US20130154261A1 - Status: Published application - Kind: A1 - Application number: 13/770,209 - Filed: 2013-02-19 - Published: 2013-06-20 - Earliest claimed: 2006-11-02 - Assignees: Swagelok Company - Inventors: Mark A. Bennett; Tobin Berry; Mark A. Clason; John D. Karkosiak; Thomas A. Lippucci; Andrew P. Marshall; Jeffrey Michael Rubinski; Edward A. Stroberg; Peter C. Williams - Web page: https://patentgrep.com/patent/US20130154261A1 ## CPC - F16L 19/103: {with more than one ring per pipe end being used} - F16L 19/065: the wedging action being effected by means of a ring - F16L 19/083: {the longitudinal cross-section of the ring not being modified during clamping} - F16L 25/00: Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L13/00 - F16L23/00 (adjustable or allowing movement F16L27/00; with fluid cut-off means F16L29/00; quick-acting F16L37/00; for double-walled or multi-channel pipes F16L39/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00; specially adapted for pipes of brittle material F16L49/00) - F16L 2201/10: Indicators for correct coupling - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL ## Abstract A fitting is provided that may optionally be pulled-up to its final assembled condition by torque rather than by turns. In one embodiment, at least one fitting component includes a structure that facilitates pull-up by torque. The structure may take a wide variety of different forms. ## Claims ### Claim 1 A conduit fitting comprising: a first threaded fitting component having an external surface and an internal surface; a conduit gripping device; a female threaded nut joined to the first threaded fitting component to cause the conduit gripping device to grip the conduit and seal when assembled, the nut having an outer portion that is radially outward of female threads of the nut that upon assembly engages the external surface of said first fitting component, wherein at least one of the external surface of the first threaded fitting component and the outer portion of the nut includes an incline in an engagement area. ### Claim 2 (depends on 1) The conduit fitting of claim 1 wherein the engagement between the outer portion of the nut and the external surface of the first fitting component causes the amount of torque required to continue pulling-up the fitting to sharply increase. ### Claim 3 (depends on 1) The conduit fitting of claim 1 wherein the first fitting component includes a marking and wherein an axial position of the nut with respect to the marking provides a visual indication of whether the fitting is properly pulled up. ### Claim 4 (depends on 1) The conduit fitting of claim 1 wherein the nut includes a marking and wherein an axial position of the first fitting component with respect to the marking provides a visual indication of whether the fitting is properly pulled up. ### Claim 5 (depends on 1) The conduit fitting of claim 1 wherein the incline forms an angle of 30 degrees to 60 degrees with respect to the central axis. ### Claim 6 (depends on 1) The conduit fitting of claim 1 wherein both the external surface of the first threaded fitting component and the outer portion of the nut include inclines in an engagement area. ### Claim 7 (depends on 1) The conduit fitting of claim 1 wherein the external surface of the first threaded fitting component includes an incline in an engagement area and the outer portion of the nut includes a rounded surface in the engagement area. ### Claim 8 (depends on 1) The conduit fitting of claim 1 wherein the external surface of the first threaded fitting component includes a rounded surface in an engagement area and the outer portion of the nut includes an incline in the engagement area. ### Claim 9 (depends on 1) The conduit fitting of claim 1 wherein the incline is configured to urge the female threads of the nut radially inward. ### Claim 10 A conduit fitting comprising: a male threaded nut having an external surface and an internal surface adapted to receive a conduit end along a central axis; a conduit gripping device; a female fitting component joined to the male threaded nut to cause the conduit gripping device to grip the conduit and seal when assembled, the female fitting component having an outer portion that is radially outward of female threads of the female fitting component that upon assembly engages the external surface of said male threaded nut, wherein only one of the external surface of the male threaded nut and the outer portion of the female fitting component includes an incline in an engagement area. ### Claim 11 (depends on 10) The conduit fitting of claim 10 wherein the engagement between the outer portion of the female fitting component and the external surface of the male threaded nut causes the amount of torque required to continue pulling-up the fitting to sharply increase. ### Claim 12 (depends on 10) The conduit fitting of claim 10 the female fitting component includes a marking and wherein an axial position of the nut with respect to the marking provides a visual indication of whether the fitting is properly pulled up. ### Claim 13 (depends on 10) The conduit fitting of claim 10 wherein the nut includes a marking and wherein an axial position of the female fitting component with respect to the marking provides a visual indication of whether the fitting is properly pulled up. ### Claim 14 (depends on 10) The conduit fitting of claim 10 wherein the nut includes a front end defining a retaining portion for the conduit gripping device. ### Claim 15 A conduit fitting comprising: a first threaded fitting component having an external surface and an internal surface adapted to receive a conduit end along a central axis; a ring disposed around a portion of the external surface; a conduit gripping device; a female threaded nut joined to the first threaded fitting component to cause the conduit gripping device to grip the conduit and seal when assembled, the nut having an outer portion that is radially outward of female threads of the nut that upon assembly engages the ring, wherein at least one of the ring and the outer portion of the nut includes an incline in an engagement area. ### Claim 16 (depends on 15) The conduit fitting of claim 15 wherein the engagement between the outer portion of the nut and the external surface of the first fitting component causes the amount of torque required to continue pulling-up the fitting to sharply increase. ### Claim 17 (depends on 15) The conduit fitting of claim 15 wherein the incline forms an angle of 30 degrees to 60 degrees with respect to the central axis. ### Claim 18 (depends on 15) The conduit fitting of claim 15 wherein both the ring and the outer portion of the nut include inclines in an engagement area. ### Claim 19 (depends on 15) The conduit fitting of claim 15 wherein the ring includes an incline in an engagement area and the outer portion of the nut includes a rounded surface in the engagement area. ### Claim 20 (depends on 15) The conduit fitting of claim 15 wherein the ring includes a rounded surface in an engagement area and the outer portion of the nut includes an incline in the engagement area.