Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PICKUP CARTRIDGE OF MOVING MAGNET TYPE
Document Type and Number:
Japanese Patent JPS5665597
Kind Code:
A
Abstract:

PURPOSE: To obtain the cartridge without lowering in sensitivity and left and right unbalance, by providing three sets of moving magnets so that the magnetic axis of moving magnets is in parallel with the vertical and horizontal axes orthogonal to the axis of cantilever and it is balanced to the maximum sensitive axis in line- symmetry.

CONSTITUTION: A magnet holder 3 having two surfaces mutually in parallel and one flat surface orthogonal to them, is fitted to another end of a cantilever 1 having stylus tip 2 made of diamond at the tip. Further, moving magnets 4a, 4b, 4c which are of rectangular isosceles triangle and magnetized toward orthogonal direction to the bottom sides, are fitted on the planes. Further, as the moving magnet 4a having parallel magnetic axis to the vertical axis of the cantilever 1, the direction of magnetization is opposite to other two magnets. Thus, the distribution of magnetic flux is balanced in line-symmetry to the maximum sensitive axis of the modulated grooves of a stereo record disc.


Inventors:
ITOU MASAYUKI
Application Number:
JP14266579A
Publication Date:
June 03, 1981
Filing Date:
November 01, 1979
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H04R11/12; H04R11/08; (IPC1-7): H04R11/12



 
Previous Patent: 携帯通信機器

Next Patent: JPS5665598