Metal working – Method of mechanical manufacture – Electrical device making
Patent
1987-12-04
1989-11-07
Kozma, Thomas J.
Metal working
Method of mechanical manufacture
Electrical device making
29760, 336223, 336229, H01F 4102, H01F 2730
Patent
active
048782912
ABSTRACT:
A toroidal coil device used in a circuit of an automobile radio receiver as an element for blocking AM waves, including a ring core, U shaped first conductive members arranged on the core at circumferentially equal intervals, and second conductive members mounted on the first conductive members such that the inner end of each first conductive member is connected to the outer end of the next first conductive member. In addition, the toroidal coil is assembled in four steps which consist of first producing the first and second conductive members, then by setting the first conductive members in slits which are formed at circumferentially equal intervals on a jig and by also setting the ring core in the thus arranged first conductive members, and then mounting the second conductive members on the first conductive members such that the second conductive members are connected with the inner end of each first conductive member and the outer end of the next first conductive member, and lastly by electrically fastening the first and second conductive members.
REFERENCES:
patent: 1852805 (1932-04-01), Frank
patent: 3025452 (1962-03-01), Ross
patent: 3564708 (1971-02-01), Harris
patent: 3638156 (1972-01-01), West
patent: 4024370 (1977-05-01), Sciaky
patent: 4103267 (1978-07-01), Olschewski
patent: 4297665 (1981-10-01), Paton et al.
Harada Kogyo Kabushiki Kaisha
Kozma Thomas J.
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