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:
Dec. 09, 1980
Filed:
Oct. 16, 1978
Homer H Sanford, Streamwood, IL (US);
Bunting Magnetics Company, Newton, KS (US);
Abstract
A split-shell magnetic printing cylinder is made from first and second half cylinders which are joined along a plane through the axis of the cylinder. Each half cylinder or 'split-shell' has first and second similar end plates with laminations stacked between the end plates. The laminations alternately form pole pieces and spacers which hold permanent magnets in contact with adjacent pole pieces. A plurality of core bars extend between and are secured to the end plates, and they are located to engage an inner curved edge of the laminations when the laminations are assembled to the core. The core bars are welded to the inner edges of the laminations for holding the laminations firmly in place. The rods extending through the laminations may also be secured to the end plates to hold the laminations. The inner edges of the laminations, the core bars and the welds are all embedded in a layer of resin such as epoxy. The split cylinders are secured together with shoulder bolts securing the end plates together.