Television tuner with fine tuning means

Details Television tuner with fine tuning means Television tuner with fine tuning means

1977-03-15

1978-10-31

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

74 106, 325416, 325452, 334 74, H04B 126, H03J 114

Patent

active

041237811

ABSTRACT:
A television tuner including a fine tuning mechanism, said mechanism comprising a cam body provided to a sleeve rotatably disposed around the operating shaft, said cam body having a cam surface adapted to convert rotary motion to reciprocating motion, and fine tuning means including a bobbin having a coil around the outside thereof, and a plunger having at one end a core adapted to be disposed within said bobbin, said plunger being L-shaped and composed of a plunger body provided with a core at one end and an arm portion at the other end, said arm portion being kept in contact with said cam surface at the free end thereof so that the plunger reciprocates said core within said bobbin with the rotation of said sleeve.

REFERENCES:
patent: 3495196 (1970-02-01), Fulton

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