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1. (WO1979000390) JOINT D"ARBRE SCELLE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS
1. A sealed joint comprising:
a shaft;
an element having a bore slidably and rotatably receiving said shaft;
a packing box surrounding said shaft;
packing within said box;
a packing gland about said shaft and removably secured to said packing box and compressing said packing to cause the packing to sealingly engage the shaft and the packing box; and
a resilient elastomeric seal interconnecting said packing box and said element and sealingly engaging said packing box and said element,
whereby said shaft may deflect substantially and the joint will remain sealed.

2. The sealed joint of claim 1 wherein said packing gland has a bore through which said shaft extends and said bore has a diameter just slightly larger than that of said shaft so as to limit nonaxial and nonrotative relative movement between said packing and said shaft.

'3. The sealed joint of claim 1 wherein said packing comprises a stack of split packing rings surrounding said shaft, the splits in said rings being staggered whereby the packing may be changed without disassembling said shaft from said element.

4. The sealed joint of claim 1 wherein said elemerit comprises a vehicle main frame and further including a track frame pivotally mounted on said shaft.

- 3- 5. A sealed joint comprising:
a shaft;
an element having an opening extending
therethrough;
a bushing within said opening, said shaft
extending through said bushing;
a cup-shaped packing box having a central opening receiving said shaft, said packing box being disposed to one side of said element and having a cavity facing away from said element;
a resilient, elastomeric, annular seal sealingly secured to said packing box and to' said element about said openings ;
a plurality of split packing rings within said packing box cavity, the splits in said rings being
staggered; and
a packing gland having a central opening receiving said shaft and removably secured to said packing box remote from said element to close said cavity and to compress aid packing into sealing engagement with said shaft, the central opening of said gland being just slightly.- larger than said box central opening and said shaft.