US 11,703,165 B2
Ferrule assembly for conduit fitting
Mark D. Bearer, Akron, OH (US); Ronald P. Campbell, Shaker Heights, OH (US); Douglas J. McClure, Mentor, OH (US); Cal R. Brown, Lyndhurst, OH (US); Peter C. Williams, Cleveland Heights, OH (US); Douglas S. Welch, Chesterland, OH (US); Stephen J. Zaborszki, Northfield, OH (US); Richard J. Mlinarik, Mantua, OH (US); Robert A. Fotta, Burton, OH (US); Matthew K. Messer, Mentor, OH (US); and Gregory S. Kalata, Avon, OH (US)
Assigned to Swagelok Company, Solon, OH (US)
Appl. No. 17/49,455
Filed by Swagelok Company, Solon, OH (US)
PCT Filed Apr. 25, 2019, PCT No. PCT/US2019/029031
§ 371(c)(1), (2) Date Oct. 21, 2020,
PCT Pub. No. WO2019/210016, PCT Pub. Date Oct. 31, 2019.
Claims priority of provisional application 62/663,430, filed on Apr. 27, 2018.
Claims priority of provisional application 62/713,127, filed on Aug. 1, 2018.
Prior Publication US 2021/0247005 A1, Aug. 12, 2021
Int. Cl. F16L 19/10 (2006.01)
CPC F16L 19/103 (2013.01) 20 Claims
OG exemplary drawing
 
1. A ferrule subassembly for a conduit fitting, comprising:
a first ferrule comprising a front body portion defining a forward tapered surface, a rear body portion defining an interior camming surface, and a retaining extension joined with the rear body portion at an inner hinge portion radially outward of the camming surface and extending axially rearward and radially inward from the inner hinge portion; and
a second ferrule comprising a front portion including a tapered forward contact surface adjacent the first ferrule camming surface and an outer radial portion extending axially rearward of the forward contact surface;
wherein an end portion of the retaining extension engages the outer radial portion to retain the second ferrule with the first ferrule as a discontinuous subassembly;
wherein the inner axial portion of the retaining extension extends axially rearward and radially outward from the inner hinge portion to the outer hinge portion, and the outer axial portion of the retaining extension extends axially rearward and radially inward from the outer hinge portion to the end portion, such that the inner and outer axial portions form a V shape in cross-section, and wherein the end portion is received in a recessed portion of the second ferrule to retain the second ferrule with the first ferrule as a discontinuous subassembly
wherein the retaining extension includes an inner axial portion joined with the rear body portion at the inner hinge portion and extending axially rearward and radially outward from the inner hinge portion, and an outer axial portion joined with the inner axial portion at an outer hinge portion, the outer axial portion extending axially rearward and radially inward from the outer hinge portion to the end portion, such that the inner and outer axial portions form a V shape in cross-section, and wherein the end portion engages the outer radial portion of the second ferrule to retain the second ferrule with the first ferrule as a discontinuous subassembly prior to installation of the ferrule subassembly in the conduit fitting.