초록 ▼

A pipe connector has a coupling with a first cylindrical land, a second cylindrical land, and a third cylindrical land. There is a first annular recess defined between the first cylindrical land and the second cylindrical land, and a second annular recess defined between the second cylindrical land

A pipe connector has a coupling with a first cylindrical land, a second cylindrical land, and a third cylindrical land. There is a first annular recess defined between the first cylindrical land and the second cylindrical land, and a second annular recess defined between the second cylindrical land and the third cylindrical land. A gate channel communicates between the two recesses through the second cylindrical land. Circumferential seals extend around the first and third cylindrical lands. A cement injection port communicates between the outside of the connector and the first recess, and a cement vent port communicates between the outside of the connector and the second recess. In use, a pipe is inserted into the coupling to rest upon the three lands, and cement is forced into the injection port. The cement flows circumferentially around the first annular recess, through the gate opening, circumferentially around the second annular recess, and out through the vent port. The seals prevent the cement from flowing out of the interior of the connector.

대표청구항 ▼

[ What is claimed is:] [1.] A connector structure to be used with a pipe of a pipe nominal diameter, comprising a hollow body having an external surface and including at least a first coupling, the first coupling includingfirst internal land;a second internal land;a third internal land;a fourth inte

[ What is claimed is:] [1.] A connector structure to be used with a pipe of a pipe nominal diameter, comprising a hollow body having an external surface and including at least a first coupling, the first coupling includingfirst internal land;a second internal land;a third internal land;a fourth internal land positioned between the first internal land and the second internal land, wherein the first internal land, the second internal land, the third internal land, and the fourth internal land are collinear and of a diameter sufficiently larger than the pipe nominal diameter to permit the pipe to be slipped into the hollow body, and wherein each of the internal lands is tapered inwardly with increasing distance from an end of the first coupling,a first circumferential seal located at the first internal land, wherein the first circumferential seal comprises a circumferential extending flap;a second circumferential seal located at the second internal land, wherein the second circumferential seal comprises a circumferentially extending flap;a circumferentially extending internal first cement flow volume lying between the fourth internal land and the second internal and;a third circumferential seal located between the first cement flow volume and the second internal land, wherein the third circumferential seal comprises a circumferentially extending flap;a circumferentially extending internal second cement flow volume lying between the second land and the third land;a gate channel through the second land communicating between the first cement flow volume and the second cement flow volume at a gate channel circumferential location;an injection port communicating between the first cement flow volume and the external surface at a port circumferential location, the port circumferential location being circumferentially remote from the gate channel circumferential location; anda vent port communicating between the second cement flow volume and the external surface at about the port circumferential location.