# US 2017/0284552 A1 · Relief valve > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0284552 A1 - Document ID: US20170284552A1 - Status: Published application - Kind: A1 - Application number: 15/512,415 - Filed: 2015-06-19 - Published: 2017-10-05 - Earliest claimed: 2014-12-04 - Assignees: Pacific Industrial Co., Ltd. - Applicants: Pacific Industrial Co., Ltd. - Inventors: Keisuke KOJIMA - Web page: https://patentgrep.com/patent/US20170284552A1 ## CPC - F16K 17/02: opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves F16K15/00) - F16K 5/08: Details - F16K 17/04: spring-loaded - F16K 17/0413: {in the form of closure plates} - F16K 27/12: Covers for housings - F16K 15/148: {the closure elements being fixed in their centre} - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract Provide is a relief valve in which the flexibility of an attaching position is higher than a conventional relief valve. In the relief valve of the present invention, a discharge hole for discharging a fluid is arranged on a side surface of a cylindrical portion which protrudes from an end surface of a head portion in a bolt-type valve body. A direction change member which changes a direction in which the discharge hole is open to an arbitrary direction is provided. In this way, the relief valve is attached to a fluid device, and then with the direction change member, it is possible to direct the fluid discharge direction to a desired direction, and accordingly, the flexibility of the attaching position of the relief valve is enhanced as compared with the conventional relief valve. ## Claims ### Claim at position 1 1-6. (canceled) ### Claim 7 A relief valve comprising: a bolt-type valve body; a hollow room which is formed in a center portion of the bolt-type valve body and which includes a component insertion port that is open to an end surface of a head portion of the bolt-type valve body; a lid member which closes the component insertion port; a valve hole which is open to a tip end surface of the bolt-type valve body and which communicates with the hollow room; a valve member which is accommodated in the hollow room and which opens and closes the valve hole; an elastic member which is accommodated in the hollow room and which biases the valve member to a side where the valve hole is closed; a cylindrical portion which is formed in the lid member and which protrudes from the end surface of the head portion; a discharge hole which is formed in a side surface of the cylindrical portion; and a direction change member which is rotatingly operated and which changes a direction in which the discharge hole is open to an arbitrary direction. ### Claim 8 (depends on 7) The relief valve according to claim 7, wherein the discharge holes are formed in a plurality of positions on the side surface of the cylindrical portion, and the relief valve includes: a cover member which is rotatably fitted in an outer side of the cylindrical portion, which closes part of the plurality of discharge holes and which serves as the direction change member; and an opening open portion which is formed in the cover member and which opens the arbitrary discharge holes according to a rotation position of the cover member. ### Claim 9 (depends on 8) The relief valve according to claim 8, comprising: a locking protruding portion which is formed in the cover member and which is locked into the discharge hole. ### Claim 10 (depends on 8) The relief valve according to claim 8, comprising: a cover member-operating protruding portion which is provided on the cover member and which protrudes from an end surface of the cylindrical portion. ### Claim 11 (depends on 9) The relief valve according to claim 9, comprising: a cover member-operating protruding portion which is provided on the cover member and which protrudes from an end surface of the cylindrical portion. ### Claim 12 (depends on 8) The relief valve according to claim 8, wherein the opening open portion has such a size as to reliably open at least part of any of the discharge holes in an arbitrary rotation position of the cover member. ### Claim 13 (depends on 9) The relief valve according to claim 9, wherein the opening open portion has such a size as to reliably open at least part of any of the discharge holes in an arbitrary rotation position of the cover member. ### Claim 14 (depends on 10) The relief valve according to claim 10, wherein the opening open portion has such a size as to reliably open at least part of any of the discharge holes in an arbitrary rotation position of the cover member. ### Claim 15 (depends on 11) The relief valve according to claim 11, wherein the opening open portion has such a size as to reliably open at least part of any of the discharge holes in an arbitrary rotation position of the cover member. ### Claim 16 (depends on 7) The relief valve according to claim 7, wherein a rotation coupling portion which rotatably couples the lid member to the end surface of the head portion is provided, and the lid member serves as the direction change member.