| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3ab0afa8ec7188840f4c6620c83142f0 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2103-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2101-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T137-1744
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T137-1737
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2103-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2103-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2103-172
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2103-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2103-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K2103-16 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K26-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16K17-1606
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B65D90-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16K17-162
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K26-359
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K26-364
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K26-0622 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23P15-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16K17-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23K26-36 |
| filingDate |
2006-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2861f513d0dbdaa4c99a756f1124128
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7b0dbcc7c9d8d14538a82c1a1ed47a3e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73023b166e316cb070e3530eee96c5d6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81c7db551bf55c29b366baa28f8feb44 |
| publicationDate |
2006-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-3011707-A1 |
| titleOfInvention |
A pressure relief device |
| abstract |
A reverse acting rupture disc is provided having a laser defined electropolished line-of-weakness recess, and an improved method of forming an electropolished line-of-weakness recess in a reverse acting rupture disc that assures full opening of the disc upon reversal. A rupture disc blank is pre-bulged, final bulged, and then provided with a layer of resist material. A laser is used to remove at least a portion of the layer of resist material corresponding to a desired line-of-weakness recess in the concave face of the bulged rupture disc. The disc is then subjected to an electropolishing operation to remove metal from the lased area of the rupture disc, thereby forming a lustrous polished line-of-weakness recess in the disc of desired configuration and of a predetermined depth that is related to material thickness. The electropolished line of weakness is defined by spaced opposed channel portions separated by a central raised crown portion wherein the channel portions are of greater depth than the crown portion. The burst/reversal pressure of the disc having an electropolished line-of-weakness recess may be selectively controlled by varying the pre-bulging pressure on the disc. |
| priorityDate |
2005-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |