http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-551954-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d2051317369a779747701bc0ebe411a4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R17-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R17-04 |
| filingDate | 1941-09-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1943-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-551954-A |
| titleOfInvention | Improvements in or relating to the mounting of piezoelectric crystals |
| abstract | 551,954. Gramophone pick-ups. RADIO CORPORATION OF AMERICA. Sept. 19, 1941, No. 12165. Convention date, Jan. 31. [Class 40 (iv)] [Also in Group XL] A Rochelle salt crystal is mounted in a casing which is filled with a semisolid moisture proofing insulating materials such as lanolin, petroleum jelly, calcium stearate or aluminium stearate. Fig. 1 shows the invention applied to a conventional pick-up in which a needle 13 is connected by a yoke 9 to a bi-morph crystal 3 having electrode foils 5 and which is clamped at 7 inside a casing 1 filled with the moisture-proofing compound. |
| priorityDate | 1941-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 16.