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Machine translation
1. (WO1981002356) MAGNETIC TAPE CASSETTE COMPRISING A MARKING DEVICE FOR THE UNWINDING OF THE TAPE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002356    International Application No.:    PCT/FR1981/000011
Publication Date: 20.08.1981 International Filing Date: 02.02.1981
IPC:
G11B 23/087 (2006.01), G11B 27/34 (2006.01)
Applicants:
Inventors:
Priority Data:
8002848 08.02.1980 FR
Title (EN) MAGNETIC TAPE CASSETTE COMPRISING A MARKING DEVICE FOR THE UNWINDING OF THE TAPE
(FR) CASSETTE A BANDE MAGNETIQUE COMPRENANT UN DISPOSITIF DE REPERAGE DU DEROULEMENT DE LA BANDE
Abstract: front page image
(EN)Marking device for the unwinding of the magnetic tape of a cassette, comprising a two stage reductor gear, adapted to be driven by a bobbin of the cassette and formed of coaxial flat discs or rings fitting together and of which two of them carry graduations intended to pass before a fixed marking of the cassette, the first reduction stage comprising a ring (127) having an eccentric circular peripheral surface (128) carrying driving means rotated by the bobbin and rotatingly mounted in a first circular crown (101) with outer toothing (105) which is oscillatory mounted with a play about a fixed point, and a second circular crown (71) having an inner toothing in mesh with the outer toothing (105) of the first crown (101) and an eccentric circular outer peripheral surface (73), and the second reduction stage comprises a third circular crown (51) having a circular inner surface (52) wherein the second circular crown rotates with a play and an outer toothing (53) in mesh with an inner toothing (32) of a fixed circular outer crown (31), surrounding the third circular crown (51).
(FR)Dispositif de reperage du deroulement de la bande magnetique d"une cassette, comprenant un engrenage reducteur a deux etages, propre a etre entraine par un bobineau de la cassette et forme de disques ou anneaux plats coaxiaux emboites les uns dans les autres et dont deux portent des graduations destinees a defiler devant un repere fixe de la cassette, le premier etage de reduction comprenant un anneau (127) a surface peripherique circulaire excentree (128), portant des moyens d"entrainement en rotation par le bobineau et monte a rotation dans une premiere couronne circulaire (101) a denture exterieure (105) elle-meme montee oscillante avec jeu autour d"un point fixe, et une seconde couronne circulaire (71) presentant une denture interieure en prise avec la denture exterieure (105) de la premiere couronne (101) et une surface peripherique exterieure circulaire excentree (73), et en ce que le second etage de reduction comprend une troisieme couronne circulaire (51) a surface interne circulaire (52) dans laquelle tourne avec jeu la seconde couronne circulaire (71) et a denture exterieure (53) en prise avec une denture interieure (32) d"une couronne exterieure circulaire fixe (31), entourant la troisieme couronne circulaire (51).
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)