Flat tuner

Tuners – Push button and/or lever-type mechanically operated tuner

Patent

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Details

74 1033, 74 108, H03J 512

Patent

active

040300528

ABSTRACT:
A treadlebarless pushbutton tuner has a slug tuned coil housing assembly, a plurality of pushbutton assemblies each carrying a presettable memory cam means to recall a memorized broadcast frequency and a slide bar mounted horizontally in a tuner frame and slideable sideways for positioning the slugs within the coil housing corresponding to the memorized frequency of the cam carried by an actuated pushbutton. The slide bar has a plurality of V shaped notches aligned with the pushbutton assemblies, movement of a memory cam in the V groove causing the sideways movement of the slide bar which is translated to slug movement. Additional features include a horizontal crown gear in the manual tuning control means, means for declutching a clutch mechanism when recalling a memorized frequency and improved means for disabling the declutch mechanism when setting up a new frequency on any one of the pushbuttons. Also provided is a simplified means for locking and unlocking the memory cams. The height of the radio when assembled presents a very low profile with an overall thickness in the range of 0.62 inches.

REFERENCES:
patent: 3247728 (1966-04-01), Wolf et al.
patent: 3431787 (1969-03-01), Frank et al.
patent: 3602051 (1971-08-01), Olah
patent: 3832907 (1974-09-01), Yasuda
patent: 3906806 (1975-09-01), Harlan
patent: 3946344 (1976-03-01), Wilkinson

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