Document Type and Number:
Japanese Patent JPS4970170
Kind Code:
A
Abstract:
A dial pointer assembly for a manually tunable radio receiver includes a slide member carrying a pointer and mounted for movement along a path parallel to a dial scale. Coupled between the slide member and a movable variable frequency tuning core carriage of the radio receiver is a parallelogram linkage including a plurality of pivotally interconnected arms which serve to define portions of first and second parallelograms; the arms of the second of which are shorter in length than those of the first. A point of interconnection of a pair of arms of the second defined parallelogram is coupled operatively to a driver mechanism including a bell crank connected to the core carriage. Movement of the latter by operation of the manual tuning controls of the radio receiver; i.e., pushbutton or manual control knob, drives the pointer mechanism with respect to the dial scale. The movement of the slide member and pointer mechanism is magnified by the ratio of the length of an arm of the first parallelogram with respect to the length of an arm of the second.
More Like This:
| JPS5451402 | TUNING INDICATOR CIRCUIT |
| JPS58176427 | 【考案の名称】電子同調受信機 |
Application Number:
JP10789373A
Publication Date:
July 06, 1974
Filing Date:
September 25, 1973
Export Citation:
International Classes:
H03J1/04; H01F21/06; H03J1/06; H03J5/08; (IPC1-7): H03J1/02