| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c1c63d43b99b04ae02f6d03ac2e3f3b |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01L2820-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D7-13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01L2303-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D7-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D9-0068
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01L2303-01 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B21K1-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01L3-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23P15-002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F01L3-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01L3-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F01L3-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16K1-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23P15-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22F1-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22F1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21K1-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B21K1-22 |
| filingDate |
2014-08-27^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5351fdd3a7621de5944195f6f8056cf8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b86b62781ab5a78ce1c54e7c2b654318 |
| publicationDate |
2016-11-02^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3088776-A1 |
| titleOfInvention |
Poppet valve and method for manufacturing same |
| abstract |
[Abstract] Stiffness strength of a seat surface in a poppet valve produced by forging is made to be more uniform. [Problem] [Solution] There is provided a method for manufacturing a poppet valve 10, in which a valve head 14 having a seat surface N is provided in one end of a valve stem 12 in a longitudinal direction, by forging, wherein an intermediate valve head 14' in a intermediate valve products 10' is provided with a pressing protrusions 15 in a region serving as the seat surface N after forging, the pressing protrusions 15 having a peak 15a positioned in a normal direction K2 of the seat surface N on a basis of the seat surface N of the forged valve head 14, in a sectional view the peak 15a of the pressing protrusions 15 is positioned on a normal line K2 passing a reference point P3 set on a virtual line (line segment K) connecting a base point P1 in an inner diameter side and a base point P2 in an outer diameter side of the seat surface N, and as viewed in a center axis X1 direction of the valve stem 12, a position of the reference point P3 is set such that a relation between a length L1 from the base point P1 in the inner diameter side to the reference point P3 and a length L2 from the base point P2 in the outer diameter side to the reference point P3 meets a formula of L1/L2 ‰¤ 0.5. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110509003-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2656080-C1 |
| priorityDate |
2014-08-27^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |