Pipe section, preferably a concrete pipe section
AssigneeForsheda Gummifabrik AB
InventorOlof Nordin
Life of this patent
Estimating the term…
Abstract
The invention relates to a pipe section of the type which is manufactured by means of molding and which is provided with sealing surfaces for sealingly connecting the pipe with another pipe section. An annular sealing ring is connected to the pipe near one end thereof having an inwardly projecting portion and a further portion located axially inward of the first mentioned portion relative to the end of the pipe. The sealing ring has an inwardly facing pocket and a protector for the surfaces thereof comprising an annular element in contact with the pipe which is easily removable from the pipe at the place where the pipe is to be used. The pipe is molded against the annular element during manufacturing thereof.
Claims5
In combination, a pipe of the type which is manufactured by moulding the pipe and material in a mould, an annular sealing ring connected to said pipe near one end thereof and adapted for sealingly connecting said pipe to another pipe, said sealing ring including ring an annular inwardly projecting sealing portion and a further portion located axially inward of said sealing portion relative to the end of said pipe, said sealing portion and said further portion having surfaces forming an axially inwardly facing pocket, and a protector for said surfaces of said sealing ring portions comprising an annular element in contact with said pipe and said surfaces of said sealing ring portions, said annular element being easily removable from said pipe at the place where said pipe is to be used, said pipe being moulded against said annular element.
Dependencies are inferred from the claim text.