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. 08, 1978
Filed:
May. 12, 1977
Vaino Sailas, Vaajakoski, FI;
Valmet Oy, Helsinki, FI;
Abstract
A roll of the type which is used in a paper machine has an inner roll body covered with a plurality of strips. The strips include pairs of strip portions situated one next to the other along the roll body and covering the outer surface thereof. Each pair of strip portions extends through 360.degree. around the roll body with each pair of strip portions including one strip portion at least part of which circumferentially surrounds and overlaps at least part of the other of each pair of strip portions. This one of each pair of strip portions circumferentially presses radially inwardly against at least said part of the other of each pair of strip portions to press the other of each pair of strip portions against the outer surface of the roll body. The one of each pair of strip portions has a coefficient of thermal expansion greater than the other of each pair of strip portions and when initially placed on the roll body is in a heated condition at a temperature sufficiently high so that upon cooling the one of each pair of strip portions will contract against the other of each pair of strip portions to provide the circumferential inwardly directed radial pressure acting to press the other of each pair of strip portions against the outer surface of the inner roll body.