http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S578509-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1af8df51ce24ca931ae718fb747f6aa0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C45-14754 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C45-14 |
| filingDate | 1980-06-19^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_589e1a58b5337c2684af18b57b5b6713 |
| publicationDate | 1982-01-16^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S578509-A |
| titleOfInvention | Lens barrel |
| abstract | PURPOSE:To obtain a highly smooth and inexpensive lens barrel by manufacturing a female side barrel of a suitable resin by making use of the female side barrel made of metal or resin as a jig for molding of a male side barrel. CONSTITUTION:A female side barrel 6 made by turning a metallic material such as aluminum or molding a PPS resin or the like is fixed by means of the movable side cores 22, 23, stripper plate 17, and core 21 of stationary side of dies, and a resin such as polystyrene is injected into a cavity 25. When the molding is removed from the dies after cooling, the barrel 6 is formed into a shape wherein the cylindrical part enclosing the projecting part 6a of said barrel is secured. This is again mounted to the dies, and a PPS resin is injected and is cooled, thereafter the cylindrical part is dissolved away by a methyl acetate soln. Thereby, the highly smooth and inexpensive lens barrels 6, 7 are obtained. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S615214-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10941828-B2 |
| priorityDate | 1980-06-19^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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