The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 01, 1990
Filed:
Jan. 19, 1989
Gregory D Leanna, Appleton, WI (US);
Integrated Design Corp., Green Bay, WI (US);
Abstract
A magnetic cylinder is formed by stacking ferromagnetic pole disks to which spacer rings are fastened. A circular array of tabs are pierced from the plane of the pole disks. the tabs are angulated relative to said plane and they diverge radially outwardly but their edges terminate on a circle concentric to the rim of the disk to provide a margin on which a concentric spacer ring is applied and is secured to the pole by pressing the tabs back toward the plane of the pole so they wedge tightly against the spacer ring. Permanent magnets are applied to the poles between adjacent pairs of tabs and they form parallel axially extending rows of magnets when the poles are stacked. At least one row is comprised of magnets which are stronger than the other to more forcefully hold down the edges of a die cutting plate of a printing plate which is wrapped around the magnetic cylinder.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile