# US 2015/0145249 A1 · Pipe joint > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0145249 A1 - Document ID: US20150145249A1 - Status: Published application - Kind: A1 - Application number: 14/412,724 - Filed: 2013-07-01 - Published: 2015-05-28 - Earliest claimed: 2012-07-13 - Assignees: SMC Corporation - Applicants: Smc Kabushiki Kaisha - Inventors: Yoshimoto Taneya; Taku Tomita; Shuichi Saito - Web page: https://patentgrep.com/patent/US20150145249A1 ## CPC - F16L 55/02718: {placed transversely} - F15B 15/204: {Control means for piston speed or actuating force without external control, e.g. control valve inside the piston (F15B11/02, F15B15/22 take precedence)} - F15B 21/003: {Systems with different interchangeable components, e.g. using preassembled kits} - F16D 48/02: Control by fluid pressure - F16L 29/00: Joints with fluid cut-off means (quick-acting joints with cut-off means F16L37/28) - F16L 37/091: by means of a ring provided with teeth or fingers - F16L 37/0915: {with a separate member for releasing the coupling} - F16L 55/027: Throttle passages - F16D 2048/0215: {for damping of pulsations within the fluid system} - F16D 2048/0224: {Details of conduits, connectors or the adaptors therefor specially adapted for clutch control} - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES ## Abstract A pipe joint has a tube for fluid detachably fitted thereto, and is connected to a hydraulic device such as a cylinder. The pipe joint is provided with a body into which the tube for fluid is inserted, and an attachment/detachment mechanism which is provided inside the body and which can attach/detach the tube for fluid. An inner sleeve for connecting the tube for fluid and the hydraulic device is provided in the body, the inner sleeve being interchangeable with orifices having different opening diameters. ## Claims ### Claim at position 1 1-10. (canceled) ### Claim 11 A pipe joint connected to a fluid pressure device, comprising a body in which a tube is inserted, and an attachment/detachment mechanism disposed in interior of the body and which is capable of attaching and detaching the tube, wherein: an orifice part through which the tube and the fluid pressure device communicate is disposed in the body; the orifice part is interchangeable; on an outer circumference of the orifice part, a projection is provided that is in sliding contact with, is press-fitted into, or is elastically deformable with respect to the tube, the body, or an inner circumference of the attachment/detachment mechanism. ### Claim 12 (depends on 11) The pipe joint according to claim 11, wherein: the orifice part comprises a plurality of orifice members, which are interchangeable with respect to the body; and in each of the orifice members, there are provided respectively orifices whose opening diameters differ from each other. ### Claim 13 (depends on 12) The pipe joint according to claim 12, wherein: the orifice members are inner sleeves inserted into a distal end inner circumference of the tube; and a projection that engages with the distal end inner circumference of the tube is provided on an outer circumferential part of the inner sleeve. ### Claim 14 (depends on 13) The pipe joint according to claim 13, wherein: the inner sleeve includes a flange that abuts against the distal end of the tube; and a contact portion of the flange that contacts the distal end of the tube is formed with an inclined surface. ### Claim 15 (depends on 12) The pipe joint according to claim 12, wherein: the orifice members are orifice plates that are inserted and gripped by a gasket on the inner circumference of the body; and the gasket is retained on the distal end of the tube. ### Claim 16 (depends on 12) The pipe joint according to claim 12, wherein: the orifice members are orifice plates that are arranged on an end of the body; and the orifice plates and the body are connected mutually by a snap fitting. ### Claim 17 (depends on 16) The pipe joint according to claim 16, wherein an o-ring is interposed between the orifice plate and a distal end outer circumference of the body. ### Claim 18 (depends on 12) The pipe joint according to claim 12, wherein: a packing member that permits flow of a fluid in one direction only is arranged between an outer circumference of the orifice member and an inner circumference of the body; and the packing member is capable of being disposed in an inverted posture. ### Claim 19 (depends on 12) The pipe joint according to claim 12, wherein: the orifice part comprises a tubular member that is installed on the distal end inner circumference of the tube; and the orifice member is arranged in interior of the tubular member so as to be capable of advancing and retracting in an axial direction of the tubular member. ### Claim 20 (depends on 19) The pipe joint according to claim 19, wherein the orifice member is capable of being disposed in an inverted posture in the interior of the tubular member.