Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Including detail of prong shape or construction
Patent
1988-02-08
1991-01-01
Matecki, Katherine A.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Including detail of prong shape or construction
226 74, G03B 130
Patent
active
049812440
ABSTRACT:
A feed mechanism for transporting paper has an endless band with transport pins for insertion into the perforations in circular perforations in the paper. The feed pins are part of drive elements attached through perforations in an endless flexible band to gear teeth which are engaged by grooves in a drive pulley. The transport pins have a cap portion on top of a base portion. The cap portion is tapered in the shape of a circular involute and extends from the top of the truncated circular conical base portion. The perforations in the band have the shape of an ellipse with the major axis thereof aligned in the direction of movement of the band. The band can be either thin flexible steel or polymer and the pin portion and gear portion of the drive elements can be integral and molded from an elastomer material through the elliptical perforations in the band.
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Partial Translation of PEPA 43-23565, Y. Furuichi, Jul. 17, 1964, Japanese Published Patent Application.
Gasper John S.
International Business Machines Corp.
Matecki Katherine A.
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