Free flight head assembly for dot matrix printers and the like

Details Free flight head assembly for dot matrix printers and the like Free flight head assembly for dot matrix printers and the like

1977-02-28

1979-08-28

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

041659406

ABSTRACT:
A print head assembly of the free flight, ballistic type comprising a wire guide subassembly and a solenoid drive assembly adapted to be precisely and adjustably interconnected by means of a novel flexible resilient parasol adapted to simultaneously adjust the spacing between the solenoid assembly armatures and the associated poles without effecting the magnitude of the biasing force imposed forces exerted on the armatures.

REFERENCES:
patent: 3929214 (1975-12-01), Hebert
patent: 3982622 (1976-09-01), Bellino et al.
patent: 3993182 (1976-11-01), Steinke
patent: 3994381 (1976-11-01), Hebert
patent: 4004673 (1977-01-01), Burzlaff et al.
patent: 4051941 (1977-10-01), Hebert
patent: 4053040 (1977-10-01), McGourty
patent: 4060161 (1977-11-01), Nelson et al.

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