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. 13, 1987
Filed:
Aug. 08, 1984
Karl Thievessen, Grevenbroich, DE;
Jagenberg AG, Dusseldorf, DE;
Abstract
A device for tensioning core tubes, especially core tubes for webs of paper or similar materials, consists of several tensioning segments in the shape of arcs of a hollow cylinder. The segments can be displaced radially inside a cage and are distributed around an arbor. Supports are positioned between the arbor and the tensioning segments in circumferential grooves on the surface of the arbor. The cross section of the arbor is an equilateral polygon in the vicinity of the grooves. The side of each support that faces a tensioning segment is spherical and is inserted into a corresponding hemispherical depression in the inner surface of the tensioning segment. The side of each support that faces the arbor has a contact surface that matches the cross-section of the floor of the groove.