http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1265420-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bfcfdd78fb893c2a5992f73953c6a9d3 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-25 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D9-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D1-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D1-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D9-14 |
| filingDate | 1985-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b98949f6b2ab3ed763d2631e96fef22a |
| publicationDate | 1990-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1265420-A |
| titleOfInvention | Process for making internally hardened tubes |
| abstract | "PROCESS FOR MAKING INTERNALLY HARDENED TUBES" The present invention relates to a process for hardening the interior surface of a long, thin-walled, small inside diameter, tubular member, such as a tube which would be used to form a downhole pump barrel. More particularly, it relates to a process involving progressive heating with an internally positioned, electro-magnetic induction coil, followed by immediate quenching with a quench ring assembly, to develop a martensitic case on the inner surface of the tube. The invention further extends to the apparatus utilized in conducting the process, and to the product tube itself. |
| priorityDate | 1985-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.