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, 2015
Filed:
May. 06, 2010
Nicholas Derek Quarmby, Dubai, AE;
Kjell Klintenstedt, Saltsjö-Bo, SE;
Nicholas Derek Quarmby, Dubai, AE;
Kjell Klintenstedt, Saltsjö-Bo, SE;
Other;
Abstract
A seal assembly for providing a seal between a pair of relatively rotatable components has; a first seal ring () mounted in sealing relationships, non-rotatably and for limited axial movement on a first of the components; a second seal () ring mounted in axially aligned relationship to the first seal ring, said second seal ring being mounted in sealing relationship, non-rotatably and for limited axial movement on a second of the components; first resilient means associated with the second seal ring urging it axially towards the first seal ring, second resilient means () acting on the first seal ring urging it away from the second seal ring to separate the first and second seal rings; and a centrifugal actuator () associated with the first seal ring, said centrifugal actuator comprising a radially extending chamber () between the first seal ring and the component associated therewith, said chamber being connected to a source of fluid, whereby when the components rotate relative to one another with fluid in the chamber, centrifugal pressurization of the fluid in the chamber will apply an axial load to the first seal ring urging it axially against the second resilient means and a sealing face of the first seal ring into sealing engagement with a sealing face of the second seal ring.