| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_150d6660a9f6cb82c2332d11215bc57a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02B2275-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02F2001-247
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02B3-06 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22D31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23P13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D9-0068
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02F1-38 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02F1-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02B3-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22D31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23P13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02F1-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D9-00 |
| filingDate |
1990-12-20^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a0ede27c78c77e33855870705b2eab0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ac09d7686c3259e3df4ea9713460de1 |
| publicationDate |
1992-06-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-4040938-A1 |
| titleOfInvention |
METHOD FOR PRODUCING CYLINDER HEADS |
| abstract |
A cylinder head in a multicylinder (pref. water cooled combustion engine) is subjected to two machining processes to produce a flat connecting surface with the cylinder block with an intermediate heat treatment in the area between the valve inlet and outlet opening(s). ADVANTAGE - The heat treatment causes tensile stresses to be formed in the surface layer which during working of the engine are released and form small pressure stresses which do not lead to surface distortion. The joint between cylinder head and block remains flat and sealed. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2905989-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0161178-A1 |
| priorityDate |
1990-12-20^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |