Back to results
US 3,947,786 AGranted
Support structure for pushbutton radio tuner assembly
AssigneeMotorola, Inc.
InventorFrank John Gordon
Life of this patent
Estimating the term…
Abstract
An extremely rigid support structure for mounting the tuning coils and for guiding the movement of the core carriage, includes a coil case which is a one-piece molded element having integral indicator guide slot and core carriage guide rods, with the guide rods being fastened to the front portion of the structure by means of screws which pass through the front portion and mate with threaded apertures in the guide rod ends which are in abutting relation with the front portion.
Claims5
In the tuner for a radio receiver, a tuning assembly comprising:
- a plurality of coils for tuning the receiver;
- carriage means adapted for reciprocating movement;
- drive means for moving the carriage means;
- manual control means for controlling the drive means to select a desired frequency;
- pushbutton control means for predetermining certain desired frequencies and for selecting one of the predetermined frequencies;
- a plurality of tuning coil cores mounted on the carriage means for movement therewith, the movement of the cores being within and coaxial with the coils;
- a support structure having a front portion and rear portion, the latter portion including as one portion thereof a one-piece molded housing for receiving all of the tuning coils;
- first guide means integral with the housing for guiding the movement of the core carriage;
- screw means for fastening the first guide means to the front portion of the support structure, the front portion having apertures for allowing passage of the screw means;
- threaded means integral with the first guide means for receiving the screw means, whereby the front-to-back dimension of the support structure remains substantially constant.
7 more elements
Dependencies are inferred from the claim text.