AN IMPROVED MAGNETIC SEAL

摘要

The invention herein is a seal to seal a rotating shaft (1) to housing (2). The seal has a stator (10) and a rotor (50), magnetically and mechanically coupled. The mechanical couple is provided through an interlocking annular groove (54) provided on one component and a flange face (21) on the other component. The mechanical couple allows the two components to become interconnected once a predetermined range of free movement of the rotor (50) is exceeded. The stator (10) and rotor (50) are also mechanically coupled through a plurality of magnets (61) positioned on either the stator (10) or rotor (50). After the predetermined range is eceeded, the rotor (50) slips along the shaft (1) while the stator (10) remains fixed, maintaining a seal in during axial movement of the rotating shaft (1).