Back to results
US 4,368,894 AGranted
Reinforced sealing rings for pipe joints
AssigneeRieber & Son
InventorGunnar Parmann
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeRieber & Son
InventorGunnar Parmann
Estimating the term…
Reinforced sealing ring for reception in a pipe joint between an annular groove-carrying socket end and an insert end. The sealing ring consists of a main body of rubber in which there is embedded an upsplit steel ring. The sealing ring is adapted to be elastically deformable to such a degree that it can be snapped into place in the annular groove of the socket end by a simple mounting operation while it can be prevented from being torn or pressed unintentionally outwards from the annular groove after mounting. In order to achieve this the main body has a largest external diameter of between 1.08D+16 mm and 1.04D+8 mm, while the cross-sectional diameter or thickness of the steel ring is between 0.01D+2 mm and 0.005D+1 mm, where D constitutes the diameter of the pipe. The steel ring is disposed embedded in a central and/or radially outer cross-sectional portion of the main body.
Reinforced sealing ring for reception in a pipe joint between an annular groove-carrying socket end and an insert end, said sealing ring consisting of a main body of elastically yielding material having an unsplit reinforcing steel ring embedded therein, said main body having an outer surface which is substantially convexly curved in the axial direction of said sealing ring and having a largest external diameter between 1.08D+16 mm and 1.04D+8 mm where D constitutes the diameter of the pipe and said steel ring having a cross-sectional diameter or thickness of between 0.01D+2 mm and 0.005D+1 mm and being located in a central and/or radially outer cross-sectional portion of said main body.
In combination,
Dependencies are inferred from the claim text.