SHAFT SEALING ASSEMBLY Russian patent published in 2005 - IPC

FIELD: sealing means, particularly sealing between relatively-moving surfaces.

SUBSTANCE: sealing assembly comprises shaft or rod installed in body and sealing member secured in the body. The sealing member is formed of elastic material and comprises extension brought into contact with the shaft or rod. The extension is pressed along inner perimeter thereof to the shaft or rod by resilient ring spring arranged around outer perimeter of above extension. Helical spring having at least one hollow coil is additionally installed around outer perimeter of the extension. At least one free spring end is connected to electromagnet limb so that during electromagnet snapping into action above spring end moves from shaft or rod axis.

EFFECT: increased sealing reliability.

4 cl, 4 dwg