Self-damping bellows seal assembly

A seal assembly comprising a stationary member having an opening, a rotatable shaft extending through said opening, a fluid pressure seal between said shaft and said stationary member including a flexible metal bellows having a plurality of convolutions and surrounding said shaft, means for securing one end of said bellows with respect to said shaft, an annular face seal sealingly engaging a radial face on said stationary member, an annular metal part welded at one end to said bellows and having an axial portion surrounding said face seal and a flexible annular member interposed between said face seal and the axial portion of said annular part, said flexible annular member closely surrounding said shaft and actively operable to dampen vibration in said bellows.

A seal assembly constructed for use with a rotatable shaft and a stationary member having an opening through which said shaft extends, said seal assembly being adapted to provide a fluid pressure seal between said shaft and stationary member, said seal assembly including a flexible metal bellows having a plurality of convolutions and adapted to surround said shaft, means for securing one end of the bellows to said shaft, said securing means including an annular, stamped sheet-metal part joined at one end to said bellows and having an intermediate axial portion adapted to sealingly cooperate with said shaft through an annular packing therebetween, an annular face seal adapted to engage a radial face on the stationary member, means securing said annular face seal with respect to the other end of said bellows including an annular, stamped sheet-metal part fixed at one end to said bellows and having an axial portion surrounding said face seal, and a flexible annular member between said face seal and the axial portion of said last mentioned stamped sheet-metal part, said first mentioned stamped sheet-metal part including a portion adapted to closely surround said shaft and to be connected thereto by clamping means which presses said stamped sheet-metal part portion against said shaft.

A seal assembly constructed for use with a rotatable shaft and a stationary member having an opening through which said shaft extends, said seal assembly being adapted to provide a fluid pressure seal between said shaft and stationary member, said seal assembly including a flexible metal bellows having a plurality of convolutions and adapted to surround said shaft, means for securing one end of the bellows to said stationary member, said securing means including an annular, stamped sheet-metal part joined at one end to said bellows and having an intermediate axial portion adapted to sealingly cooperate with said stationary member through an annular packing therebetween, an annular face seal adapted to engage a radial face on said shaft, means securing said annular face seal with respect to the other end of said bellows including an annular, stamped sheet-metal part fixed at one end to said bellows and having an axial portion surrounding said face seal, and a flexible annular member between said face seal and the axial portion of said last mentioned stamped sheet metal part, said first mentioned stamped sheet-metal part including a portion adapted to closely surround said shaft and to be connected to said stationary member by clamping means which presses said stamped sheet-metal part portion against said stationary member.