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:
Jan. 22, 1991
Filed:
Apr. 04, 1989
Chauncey Mason, Bolton Landing, NY (US);
A. Ahlstrom Corporation, Karhula, FI;
Abstract
A screen cylinder is made up of a plurality of identical ceramic elements in arcuate form having screen openings, and opposite longitudinally extending edges carrying a tongue and groove, respectively. The elements are joined one to the other along their edges by inserting the tongues into the grooves to form a complete cylinder. Different diameter and lengths of screen cylinders may be formed by varying the number of elements in each closed arrangement of elements, and the closed arrangements may be disposed end-to-end with an intermediate connecting ring between them. End rings are provided to maintain the elements in a generally cylindrical configuration. Cinch rods connected between the end rings and under tension subject the elements in assembly to axial compression.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile