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:
Aug. 15, 1989
Filed:
Feb. 12, 1987
Osmo Skytta, Jyvaskyla, FI;
Valmet Oy, , FI;
Abstract
Spreader roll for a fabric in a paper machine, the spreader roll being supported at the middle of thereof and comprising an inner tube and an outer tube attached onto the inner tube through an intermediate part. The inner tube and the outer tube are substantially coaxial with one another when the roll is in an unbent state. Annular intermediate spaces are situated between the tubular parts at both sides of the intermediate part, the intermediate spaces being dimensioned so they permit deflection of the inner tube and the outer tube relative to one another when the fabric passing over the roll is being tensioned. Ends or end flanges are situated at the outer end of the inner tube, along with axle journals. The double mantle of the roll with the intermediate part thereof is composed of a piece of reinforced plastic made as a substantially single, unified piece, in which the outer tube and the inner tube are integrally connected through the intermediate portion, without joints. The double mantle of the spreader roll with the intermediate part thereof is made, e.g., of epoxy plastic reinforced with carbon fibre. Moreover, a method is provided for the manufacture of the spreader roll.