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:
Feb. 04, 2003
Filed:
Dec. 27, 2001
Ernst-Peter von Bergen, Ahlefeld, DE;
B+V Industrietechnik GmbH, Hamburg, DE;
Abstract
There is now provide an ocean-going ship, and an ocean-going vessel with a stern tube seal arrangement for sealing a stern tube for a propeller drive shaft, and an arrangement for sealing propeller drive shafts in an ocean-going vessel. In the seal arrangement there is provided a compensation to balance pressure fluctuations that arise in the lubricating oil chamber due to axial oscillations of the shaft. In this, the change of pressure is determined by a sensor and this actual value is passed to a comparator element. The comparator element controls a pressure valve so as to control the extent of filling of an annular tubular expandable body, whereby the expandable body impacts on the lubricating oil chamber. By way of a phase shift of 180 degrees in reference to the sensed pressure impulse in the event of an increase in volume of the expandable body, a minimized pressure fluctuation in the lubricating oil chamber can be controlled.