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:
Jul. 27, 2010
Filed:
Dec. 13, 2004
Jarmo Helasuo, Espoo, FI;
Olli Ruosaari, Tampere, FI;
Kari Laukkanen, Espoo, FI;
Metso Automation Oy, Helsinki, FI;
Abstract
The invention relates to a seal intended for sealing an axis pair, whereby the axes rotate in the same direction, the inner one of the axes is inside the outer axis and the phase difference of the axes is arranged to remain within predefined limits. The seal () is a tubular seal made of an elastic material and comprises at least two tube sections () fixed to each other. Folds () of the at least two tube sections () have opposing twisting angles. One end of the seal () is fastened to the outer axis and the other end is fastened to the inner axis, and the seal () is arranged to twist by a torque proportional to the phase difference between the axes.