Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_05060720d78cc9178696073231d89834 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-5521 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01P3-465 |
classificationIPCInventive |
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/G11B5-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01P3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01P3-46 |
filingDate |
1984-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_845239fb8f8fd587dff4961953c8fcad http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85c3038d243561ea3231e33ef4e0a61c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9246bc1cb486611fb25b5463c4560b0f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ece17775f097e7b51d5e60a9a6817b54 |
publicationDate |
1984-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
EP-0129475-A2 |
titleOfInvention |
Magnetic tachometer for disk drives |
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 rejection. |
priorityDate |
1983-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |