Connector

Claim 2

A connector for pipes comprising a generally cylindrical tube, said tube having at least one open end portion, a cup shaped closure for closing off the open end of said cylindrical tube, said cup shaped closure removably mounted in the open end of said tube with the walls of said cup shaped closure abutting the walls of the end of said tube, a seal mounted in said cup shaped closure, said cup shaped closure with said seal mounted therein having aligned pipe receiving openings extending therein, whereby when said cup shaped closure is mounted in the open end of said tube with the pipe to be connected extending through said pipe receiving opening in sealing engagement with the pipe receiving opening in saiD seal, said seal is substantially isolated from corrosive fluids, moisture, and damaging temperatures outside the connector, and adjustable pressure resisting means for retaining said cup shaped closure in the end of the cylindrical tube against a pre-determined internal pressure, said cylindrical tube is reduced in diameter adjacent at least one end, defining thereby an external shoulder intermediate the ends of the tube, said adjustable pressure resisting means including retaining means, said retaining means generally channel shaped in cross section and including spaced walls and an intermediate web portion, the sides and the spacing of said walls being such that when one wall fits over the end of the cup shaped closure in the tube, the other wall fits over and abuts the external shoulder of the cylindrical tube, said retaining means mounted on the end of the cylindrical tube to form a generally cylindrical segment embracing the end and external shoulder of the tube, said retaining means having adjustment means thereon for adjustably tightening the retaining means around the end of the cylindrical tube whereby the cup shaped closure is adjustably locked inside said cylindrical tube against said pre-determined internal pressure.

Claim 3

A connector for pipes comprising a generally cylindrical tube, said tube having at least one open end portion, the open end of said tube counterbored to provide a seal engaging shoulder near the end of said tube, a cup shaped closure for closing off the open end of said cylindrical tube, said cup shaped closure removably mounted in the open end of said tube, the walls of the cup shaped closure abutting the surface of the ends of the tube, a first pressure responsive seal mounted in said cup shaped closure, said cup shaped closure and said first seal having aligned pipe receiving openings extending therethrough, a second seal, said second seal dimensioned so when said cup shaped closure is mounted on the end of the tube, a portion of the second seal moves into sealing engagement with said shoulder, the pipe receiving opening in the first seal dimensioned so when a pipe extends through the said opening in the cup shaped closure in sealing engagement with the pipe receiving opening in the first pressure responsive seal, said second seal is isolated from corrosive fluids, moisture and damaging temperatures outside the connector, and adjustable pressure resisting means for retaining said cup shaped closure in the end of the tube against a pre-determined pressure inside the tube, said cylindrical tube is reduced in diameter adjacent at least one end defining thereby an external shoulder intermediate the ends of the tube, said adjustable pressure resisting means including retaining means, said retaining means generally channel shaped in cross section and including spaced walls and an intermediate web portion, the sides and the spacing of said walls being such that when one wall fits over the end of the cup shaped closure in the tube, the other wall fits over and abuts the external shoulder of the cylindrical tube, said retaining means mounted on the ends of the cylindrical tube to form a generally cylindrical segment embracing the end and external shoulder of the tube, said retaining means having adjustment means thereon for adjustably tightening the retaining means around the end of the cylindrical tube whereby the cup shaped closure is adjustably locked inside said cylindrical tube against said pre-determined internal pressure.

Claim 4

A connector for pipes comprising a generally cylindrical tube, said tube having at least one open end portion, the open end of said tube counterbored to provide a seal engaging shoulder near the end of said tube, a cup shaped closure for closing off the open end of said cylindrical tube, said cup shaped closure removably mounted in the open end of said tube, the walls of the cup shaped closure abutting the surface of the ends of the tube, a first pressure responsive seal mounted in said cup shaped closure, said cup shaped closure and said first seal having aligned pipe receiving openings extending therethrough, a second seal, said second seal dimensioned so when said cup shaped closure is mounted on the end of the tube, a portion of the second seal moves into sealing engagement with said shoulder, the pipe receiving opening in the first seal dimensioned so when a pipe extends through the said opening in the cup shaped closure in sealing engagement with the pipe receiving opening in the first pressure responsive seal, said second seal is isolated from corrosive fluids, moisture and damaging temperatures outside the connector, and adjustable pressure resisting means for retaining said cup shaped closure in the end of the tube against a pre-determined pressure inside the tube, said cylindrical tube is reduced in diameter adjacent at least one end defining thereby an external shoulder intermediate the ends of the tube, said adjustable pressure resisting means including retaining means, said retaining means generally channel shaped in cross section and including spaced walls and an intermediate web portion, the sides and the spacing of said walls being such that when one wall fits over the end of the cup shaped closure in the tube, the other wall fits over and abuts the external shoulder of the cylindrical tube, said retaining means mounted on the ends of the cylindrical tube to form a generally cylindrical segment embracing the end and external shoulder of the tube, said retaining means having adjustment means thereon for adjustably tightening the retaining means around the end of the cylindrical tube whereby the cup shaped closure is adjustably locked inside said cylindrical tube against said pre-determined internal pressure.

Claim 5

A connector for pipes comprising a generally cylindrical tube, said tube having at least one open end portion, the open end of said tube counterbored to provide a seal engaging shoulder near the end of said tube, a cup shaped closure for closing off the open end of said cylindrical tube, said cup shaped closure removably mounted in the open end of said tube with the walls of said cup shaped closure abutting the inner surface of the end of said tube, the free end of the walls of said cup shaped closure reduced in thickNess and terminating near said seal engaging shoulder, a first annular seal having a shoulder engaging base portion, a wall engaging side portion and a groove, said first seal mounted so the reduced end of the walls of said cup shaped closure enters said groove with the base of said first seal in sealing engagement with said shoulder and the side of said seal in sealing engagement with the inner surface of said tube, a second pressure responsive seal mounted in said cup shaped closure, said cup shaped closure with said seal mounted therein having aligned pipe receiving openings extending therethrough whereby when said cup shaped closure is mounted in the ends of said tube with the pipe to be connected extending through said pipe receiving opening in sealing engagement with said second seal, said first and second seals are isolated from corrosive fluids, moisture and damaging temperatures outside the connector, and adjustable pressure resisting means for retaining said cup shaped closure in the end of the cylindrical tube against a pre-determined internal pressure.

Claim 6

A connector for pipes comprising a generally cylindrical tube, said tube having at least one open end portion, the open end of said tube counterbored to provide a seal engaging shoulder near the end of said tube, a cup shaped closure for closing off the open end of said cylindrical tube, said cup shaped closure removably mounted in the open end of said tube with the walls of said cup shaped closure abutting the inner surface of the end of said tube, the free end of the walls of said cup shaped closure reduced in thickNess and terminating near said seal engaging shoulder, a first annular seal having a shoulder engaging base portion, a wall engaging side portion and a groove, said first seal mounted so the reduced end of the walls of said cup shaped closure enters said groove with the base of said first seal in sealing engagement with said shoulder and the side of said seal in sealing engagement with the inner surface of said tube, a second pressure responsive seal mounted in said cup shaped closure, said cup shaped closure with said seal mounted therein having aligned pipe receiving openings extending therethrough whereby when said cup shaped closure is mounted in the ends of said tube with the pipe to be connected extending through said pipe receiving opening in sealing engagement with said second seal, said first and second seals are isolated from corrosive fluids, moisture and damaging temperatures outside the connector, and adjustable pressure resisting means for retaining said cup shaped closure in the end of the cylindrical tube against a pre-determined internal pressure.

Claim 7

The connector described in claim 3 wherein said cylindrical tube is reduced in diameter adjacent at least one end and defining thereby an external shoulder intermediate the tube, and two semi-cylindrical pieces, said pieces generally channel shaped in cross-section including spaced walls and an intermediate web portion, the sides and the spacing of said walls such that when one wall fits over the end of the cup shaped closure in the tube, the other wall fits over and abuts the external shoulder of the cylindrical tube, said semi-cylindrical pieces mounted on the ends of the cylindrical tube so they form a generally cylindrical segment embracing the end and external shoulder of the tube, and a strap embracing said semi-cylindrical pieces on the end of the cylindrical tube, means mounted on the strap for adjustably tightening the strap around the end of the cylindrical tube whereby the cup shaped closure is adjustably locked inside said tube cylindrical against said predetermined internal pressure.

Claim 8

The connector described in claim 4 wherein said second pressure responsive seal comprises an annular ring shaped element generally channel shaped in cross-section, said second pressure responsive seal mounted in said cup shaped closure so one leg of said seal bears against the base of said cup shaped closure member while the other leg is in inwardly spaced relation to said first leg and connected thereto by a web portion, said web portion defining an opening through said seal sized to snugly receive and engage a pipe extending through said cup shaped closure and said opening whereby when the interior of said connector is pressurized, the pressure deforms and bends said other leg down into sealing engagement with the outer surface of the pipe.

Claim 9

The connector described in claim 5 including a garter spring mounted in said annular ring shaped element bearing against the web portion of the second pressure responsive seal and exerting radially inwardly directed force on the web of said seal, whereby if the web portion of the seal hardens during prolonged use, the garter spring biases and shapes the hardened web portion so it remains in sealing engagement with the outer surface of the tube to prolong the life of the seal.