| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be055db3c1a09879df07379ba969e223 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R2307-204
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R2307-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R2307-029
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C51-082
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R2231-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29L2031-755
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R2231-001 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R31-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R7-122
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C51-087
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R7-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R7-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C51-145 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R7-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R7-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C51-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C51-14 |
| filingDate |
1982-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1982-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2094701-A |
| titleOfInvention |
Speaker diaphragm and method of manufacture |
| abstract |
A fixed type diaphragm for speaker and a method of producing such diaphragm comprising a sheet-forming step comprising forming a sheet for the edge portion composed principally of a thermoplastic resin fiber and mixed with a reinforcing material while also forming and laminating on the said sheet the circular sheets for the cone portion composed principally of a thermoplastic resin fiber and mixed with a reinforcing material; a cutting step in which the formed laminate sheet is cut; a heating step in which each cut sheet is held between heating plates and thereby heated and softened; and a molding step in which the heated and softened sheet is cold pressed by the top and bottom disc. In the preferred embodiment, a base sheet (10) carrying discs (11) is heat softened in the area of the discs by plats (12-1 5). The thus softened areas are then drawn to form diaphragms between a lower ferrule die (16) and a movable upper die (17') having a clamping ring (17''). The disc and ring are cooled. <IMAGE> |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0632675-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0283378-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0714752-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101207944-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0714752-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113709636-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103347243-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104254434-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5783137-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109968684-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5744761-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0058073-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0508596-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113709633-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005055657-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013060811-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0783238-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6039145-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2268059-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1039355-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109968684-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6668456-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0251057-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2611577-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113709634-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0283378-A2 |
| priorityDate |
1981-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |