http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1037385-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_294881271413951a95f284b588a68e66 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B3-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B3-122 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B3-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B3-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B3-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B3-14 |
| filingDate | 1975-10-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1978-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d232a295255f5a9ff533422e86bcbfe7 |
| publicationDate | 1978-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1037385-A |
| titleOfInvention | Inside force cancelling device for tone arm of record player |
| abstract | INSIDE FORCE CANCELLING DEVICE FOR TONE ARM OF RECORD PLAYER ABSTRACT OF THE DISCLOSURE In a record player in which the friction of the pickup stylus in respect to a rotated record disc results in a so-called inside force acting to turn the tone arm in the inward direction with the magnitude of such inside force varying in accordance with the stylus position in the spiral record groove; an inside force cancelling device includes a cam follower, for example, in the form of a roller, spaced radially from the turning axis of the tone arm and coupled with the latter to move in an arcuate path with the tone arm, and a cam member having a cam surface extending along such arcuate path and being inclined in respect to the direction of movement of the cam follower so that the urging of the cam member against the cam follower, for example, by the force of gravity acting on a weight mechanically coupled to the cam member, causes the inclined cam surface to exert a force on the cam follower in the direction for opposing the turning of the tone arm by the inside force. The cam surface is given different angles of inclination at locations therealong so that the force exerted on the cam follower is varied to counteract the varying magnitude of the inside force. Further, a deactivating device is provided to move the cam member away from the cam follower to an inactive position and then to hold the cam member in such inactive position. |
| priorityDate | 1974-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.