GB1110334A - Improvements in or relating to sleeve bearings - Google Patents

Abstract

1,110,334. Bearings; seals. METZELER A.G. 12 July, 1965 [21 Aug., 1964], No. 29421/65. Headings F2A and F2B. A seal between two relatively angularly displaceable parts comprises an elastomeric member having an outer portion connected to a first part to form a stationary seal therewith, an annular inner portion adapted to seal against a second part under radial compression and an intermediate portion provided with a number of folds or corrugations therein whereby angular displacements between the two parts are absorbed by the seal, the inner portion of the elastomeric member forms a stationary seal with the second part but becomes a sliding seal when the angular displacement between the two parts is increased beyond a critical angle. In an embodiment, a seal for a bearing comprises a rubber &c. casing 9 and a corrugated annularshaped member 11 of resilient material having an outer periphery 10 held by the casing 9 and an inner periphery 12, resiliently urged against an extension 13 of a bearing bush 14. The latter is engaged by a bearing bush 1 which is attached to the casing 9. In use, relative oscillating movements between the bushes 14, 1 are accommodated by the corrugations in the member 11, but should the distance oscillated be excessive, sliding occurs between the inner periphery 12 of the member 11 and the extension 13 of the bush 14. An annular cap 15 is provided to protect the member 11 and is attached to the extension 13. In modifications, the corrugations may be radial or diagonal and intersecting.