Self restoring pivoting means and print hammer using same

Details Self restoring pivoting means and print hammer using same Self restoring pivoting means and print hammer using same

1981-05-26

1985-12-10

Burr, Edgar S.

Printing

Selective or progressive

Bed and platen machines

101 9334, 4001442, 4001572, 267154, B41J 9127

Patent

active

045571929

ABSTRACT:
A pivoting means for pivoting back and forth a mechanical load such as a print hammer about a given axis and within a low amplitude angle includes two elongated leaf springs. The leaf springs are located in planes at a given angle with respect to each other but both planes being perpendicular to the plane of pivotation of the mechanical load. A frame fixed relative to the pivotable mechanical load is used for attaching the extremities of both elongated leaf springs. The mechanical load is attached to both leaf springs equidistant from their attached extremities. A power source pivots the mechanical load from its rest position to its work or print position causing the two leaf springs to be flexed in torsion. The torsion flexing generates a return torque for self restoring the mechanical load back to its original position.

REFERENCES:
patent: 2906522 (1959-09-01), Wagner
patent: 3110250 (1963-11-01), Fradkin
patent: 3276762 (1966-10-01), Thomas
patent: 3384216 (1968-05-01), Thayer
patent: 3442365 (1969-05-01), Ragland, III et al.
patent: 3504623 (1970-04-01), Staller
patent: 3631797 (1972-01-01), Johnston et al.
patent: 3670647 (1972-06-01), Funk et al.
patent: 3968744 (1976-07-01), Kasu et al.
patent: 4167343 (1979-09-01), Golobay
IBM Technical Disclosure Bulletin, vol. 19, No. 2, Jul. 1976, pp. 443-444, "Print Impression Control Device", J. E. Drejza.

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