Accession Number : ADD006775

Title :   Self-Adjusting Tandem Seal.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Arena,John P ; McGuigan,Charles G ; Rossi,Gene A

Report Date : 20 Nov 1979

Pagination or Media Count : 4

Abstract : A dynamic seal has a primary and secondary seal ring connected in series between first and second fluid zones, with an intermediate fluid zone between the seal rings. When leakage occurs between the first and intermediate zones, the pressure in the intermediate zone builds up through a feedback system increasing the force on the primary seal rings. Furthermore, leakage through the primary seal also takes place creating another force that also provides a tighter seal. In addition, the primary and secondary seal rings have additional variable and feedback controls for adjusting the force on the dynamic seal. (Author)

Descriptors :   *Patents, *Seals(Stoppers), *Leakage(Fluid), Self operation, Rings, Fluids, Dynamics, Statics, Drive shafts, Underwater propulsion, Pressure, Self sealing couplings, Reliability

Subject Categories : Adhesives, Seals and Binders
      Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE