초록 ▼

A pipe bell including a radially extending groove which is defined rearwardly by an acute angle of design to firmly seat a gasket therein. The groove is forwardly defined by an inwardly curved mouth or inward bend of suitable size to receive the spigot end of the next adjacent pipe length therein. A

A pipe bell including a radially extending groove which is defined rearwardly by an acute angle of design to firmly seat a gasket therein. The groove is forwardly defined by an inwardly curved mouth or inward bend of suitable size to receive the spigot end of the next adjacent pipe length therein. A gasket which includes a forward, circular lip and an integral, rearward, larger lip is positioned within the groove to seal against the spigot end of the next adjacent pipe length. The gasket includes an angular rear shoulder of suitable configuration to lock within the pipe groove between the rearward acute angle and the forward bent end and may be peripherally outwardly arcuately shaped for better sealing. If desired, the gasket may be provided with an inwardly open groove to receive therein a plastic retaining and locking ring to aid in preventing seal movement.

대표청구항 ▼

A pipe bell in the cylindrical body of a pipe or fitting, the pipe or fitting having a longitudinal axis comprising an enlarged, generally cylindrical, one piece hub formed in the forward end of the said body, the hub having a cylindrical section of a first diameter suitable to overfit an end of an

A pipe bell in the cylindrical body of a pipe or fitting, the pipe or fitting having a longitudinal axis comprising an enlarged, generally cylindrical, one piece hub formed in the forward end of the said body, the hub having a cylindrical section of a first diameter suitable to overfit an end of an adjacent length of pipe, the hub including an integral, radially inward open, internal groove of a second diameter, the second diameter being greater than the first diameter, the internal groove being defined forwardly by an integral, radially inward bent retainer, the internal groove being defined rearwardly by an integral, circular, angular corner, the bent retainer and the hub being of unitary construction.