Print hammer and coil assembly

Details Print hammer and coil assembly Print hammer and coil assembly

1981-01-09

1983-12-27

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9348, 336231, B41J 938

Patent

active

044223773

ABSTRACT:
Disclosed is a unique wire coil having flat sides and a maximum packing density. The coil is wound in a hex fashion (i.e., with each interior turn of the coil being in contact with six other turns of the coil) and has a plurality of turns and a plurality of layers of turns. The coil is wound generally perpendicular to a central axis, and each layer of turns is wound at an angle of approximately 30 degrees with respect to the axis, which results in a coil having flat sides.

REFERENCES:
patent: 1445896 (1923-02-01), Lane
patent: 1955318 (1934-04-01), West et al.
patent: 2438935 (1948-04-01), Ambrose
patent: 3372357 (1968-03-01), Dietzel et al.
patent: 3412354 (1968-11-01), Sattler
patent: 3735698 (1973-05-01), Undas et al.
patent: 4129390 (1978-12-01), Bogelon et al.

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