Patents by Inventor Syuiti Nakajima

Syuiti Nakajima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rotary perforator, method for perforating a web, and web perforated by the rotary perforator
    Patent number: 5317942
    Abstract: A perforator for perforating a web. The perforator has a rotatable drum for supporting the web; an arm having a punch, which rotates integrally with the drum; a driver for swinging the arm, which rotates integrally with the drum; and a taper rib which does not rotate with the drum, in which the taper rib is provided with a roller gear cam for engaging with the taper rib which is provided on a circumference concentric with the drum in a cross section perpendicular to an axis of the drum, so that the taper rib causes the driver to swing and the punch perforates the web with rotation of the drum.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: June 7, 1994
    Assignee: Konica Corporation
    Inventor: Syuiti Nakajima