# US 10,870,570 B2 · Safety joint > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,870,570 B2 - Document ID: US10870570B2 - Status: Granted - Kind: B2 - Application number: 16/031,935 - Filed: 2018-07-10 - Published: 2019-01-17 - Granted: 2020-12-22 - Earliest claimed: 2017-07-11 - Assignees: Tatsuno Corporation - Applicants: Tatsuno Corporation - Inventors: Masahiro Takezawa; Yuki Terasoma; Kiyoshi Kimura - Web page: https://patentgrep.com/patent/US10870570B2 ## CPC - B67D 7/3218: {relating to emergency shut-off means} - B67D 7/00: Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes (general disposition of plant in stations for supplying fuel to vehicles B60S5/02; for filling or emptying locomotive water tanks, e.g. water columns, B61K11/00; for refuelling aircraft during flight B64D39/00; liquid- handling ground installations specially adapted for fuelling stationary aircraft B64F1/28) - F16L 29/02: with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied - F16L 35/00: Special arrangements used in connection with end fittings of hoses, e.g. safety or protecting devices - F16L 55/1015: {Couplings closed automatically when disengaging force exceeds preselected value (F16L55/1007 takes precedence)} - F16L 37/34: at least one of the lift valves being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall - F16L 37/35: at least one of the valves having an axial bore communicating with lateral apertures - Y02E 60/32: Hydrogen storage - B67D: DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR (cleaning pipes or tubes or systems of pipes or tubes B08B9/02; emptying or filling of bottles, jars, cans, casks, barrels, or similar containers, not otherwise provided for B67C; water supply E03; pipe systems F17D; domestic hot-water supply systems F24D; measuring volume, volume flow, mass flow or liquid level, metering by volume G01F; coin-freed or like apparatus G07F) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract To provide a safety joint capable of preventing moment generated by swinging of a filling hose and surely separating the safety joint to a hydrogen filling apparatus side member and a vehicle side member when a tensile force more or equal to a predetermined value is applied to the filling hose. The safety joint 100 according to the present invention includes a plug (10: vehicle side member) with a cylindrical shape in which a passage (1A: in-plug passage) is formed, a socket (20) in which a passage (21A: in-socket passage) continuing to the passage (1A) in the plug (10) is formed, and a shut off valve mounted on the passage (21A: in-socket passage) in the socket (20), the shut off valve opening when the plug (10) being inserted into the socket (20) and closing when the plug (10) being disconnected therefrom, wherein central axes of the passages of the plug and the socket do not form a straight line (but those are orthogonal with each other for instance), a filling hose (61) is connected to the plug (10), and a hose guide (70, 70A) for limiting movement of the filling hose (61) at a position separated from the plug (10). ## Claims ### Claim 1 A safety joint comprising a plug with a cylindrical shape in which a passage is formed, a socket in which a passage continuing to the passage in the plug is formed, and a shut off valve mounted on the passage in the socket, the shut off valve opening when the plug being inserted into the socket and closing when the plug being disconnected therefrom, wherein central axes of the passages of the plug and the socket do not form a straight line, a filling hose is connected to the plug, and a hose guide configured to allow the filling hose to extend therethrough for limiting movement of the filling hose at a position separated from the plug, the hose guide including an outer cylinder, an elastic member for surrounding the filling hose, an elastic member accommodating portion accommodating the elastic member in a hollow portion, and a lid portion engaging with the elastic member accommodating portion to close the hollow portion, and an inner diameter size of the outer cylinder is larger than a maximum diameter of the plug. ### Claim 2 (depends on 1) The safety joint as claimed in claim 1, wherein the outer cylinder is fixed by an outer cylinder fixing portion, a projection projecting outward in a radial direction of the hose guide is formed on an end portion of the elastic member accommodating portion of the hose guide, and a channel capable of accommodating the projection is formed on an inner peripheral surface of the outer cylinder fixing portion. ### Claim 3 (depends on 1) The safety joint as claimed in claim 1, further comprising a cover for protecting a valve rod mounted on one of the plug and the socket. ### Claim 4 (depends on 1) The safety joint as claimed in claim 1, wherein the plug comprises a depressurizer including a main body portion made of metal, a depressurizing communication hole communicating with a hydrogen gas passage in the main body portion, a depressurizing plug made of metal, the depressurizing plug capable of being inserted into the depressurizing communication hole, and tapered portions formed on the depressurizing communication hole and the depressurizing plug respectively, the tapered portions having complemental shapes with each other. ### Claim 5 (depends on 2) The safety joint as claimed in claim 2, further comprising a cover for protecting a valve rod mounted on one of the plug and the socket. ### Claim 6 (depends on 2) The safety joint as claimed in claim 2, wherein the plug comprises a depressurizer including a main body portion made of metal, a depressurizing communication hole communicating with a hydrogen gas passage in the main body portion, a depressurizing plug made of metal, the depressurizing plug capable of being inserted into the depressurizing communication hole, and tapered portions formed on the depressurizing communication hole and the depressurizing plug respectively, the tapered portions having complemental shapes with each other. ### Claim 7 (depends on 3) The safety joint as claimed in claim 3, wherein the plug comprises a depressurizer including a main body portion made of metal, a depressurizing communication hole communicating with a hydrogen gas passage in the main body portion, a depressurizing plug made of metal, the depressurizing plug capable of being inserted into the depressurizing communication hole, and tapered portions formed on the depressurizing communication hole and the depressurizing plug respectively, the tapered portions having complemental shapes with each other. ### Claim 8 A safety joint comprising a plug with a cylindrical shape in which a passage is formed, a socket in which a passage continuing to the passage in the plug is formed, and a shut off valve mounted on the passage in the socket, the shut off valve opening when the plug being inserted into the socket and closing when the plug being disconnected therefrom, wherein central axes of the passages of the plug and the socket do not form a straight line, a filling hose is connected to the plug, and a hose guide for limiting movement of the filling hose at a position separated from the plug, the hose guide including an outer cylinder, an elastic member for surrounding the filling hose, an elastic member accommodating portion accommodating the elastic member in a hollow portion, and a lid portion engaging with the elastic member accommodating portion to close the hollow portion, and an inner diameter size of the outer cylinder is larger than a maximum diameter of the plug. ### Claim 9 (depends on 8) The safety joint as claimed in claim 8, further comprising a cover for protecting a valve rod mounted on one of the plug and the socket. ### Claim 10 (depends on 8) The safety joint as claimed in claim 8, wherein the plug comprises a depressurizer including a main body portion made of metal, a depressurizing communication hole communicating with a hydrogen gas passage in the main body portion, a depressurizing plug made of metal, the depressurizing plug capable of being inserted into the depressurizing communication hole, and tapered portions formed on the depressurizing communication hole and the depressurizing plug respectively, the tapered portions having complemental shapes with each other.