| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_05060720d78cc9178696073231d89834 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01P3-465
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-5521 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01P3-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-55
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01P3-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B21-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B21-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01P3-00 |
| filingDate |
1984-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1987-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9246bc1cb486611fb25b5463c4560b0f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85c3038d243561ea3231e33ef4e0a61c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_845239fb8f8fd587dff4961953c8fcad
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ece17775f097e7b51d5e60a9a6817b54 |
| publicationDate |
1987-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-1220549-A |
| titleOfInvention |
Magnetic tachometer for disk drives |
| abstract |
ABSTRACT A magnetic tachometer for generating a signal as a function of the velocity of a transducer positioning arm in a disk drive. The tachometer is formed by a pair of fixed parallel coils separated by a distance sufficient to allow a magnet, attached to a counterbalance portion of the rotary positioning arm to move therebetween and thus to generate a voltage as a function of the velocity of the magnet. The coils are each wound over a thin armature member which is saturated by the magnet's magnetic field and they are differentially coupled to produce common mode rejec-tion. |
| priorityDate |
1983-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |