http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H10280460-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6765f97c95f6b26193d547fa6ddccf6b |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E02D29-14 |
| filingDate | 1997-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f0e26abc39b7cae6aeda5fbf8dc1a66 |
| publicationDate | 1998-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H10280460-A |
| titleOfInvention | Protective cover used for small-diameter PVC manholes |
| abstract | (57) [Summary] [PROBLEMS] To reduce the processing cost of a protective cover for a small-diameter PVC manhole. SOLUTION: The protection cover 5A of the present invention is a casting lid 7 slipped on the upper surface, a casting ring portion 14 having a shelf 6a for supporting the lid, and is fitted separately from the ring portion 14. It is composed of a cylindrical portion 13 that has been attached, and an anti-sinking plate 9A that supports the cylindrical portion 13. Instead of loosely fitting the lid 7 to the ring portion 14, the periphery of the lower surface of the lid 7 and the shelf 6 Since the knurling process was performed on the upper surface of a and the lid 7 was stopped, the knurling process could be done by roughing without considering the casting dimensional error of the casting. Can be lowered. |
| priorityDate | 1997-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 16.