Quick coupling and seal

Claim 2

A coupling and seal for connecting to the cylindrical exterior of the end portion of a pipe and including, a tubular body with a passage therethrough opening at a terminal end in a plane normal to the central axis thereof, a nut having a bore engageable over the cylindrical exterior of the pipe and with a counterbore terminating at a shoulder therein opening at a face opposing said terminal end of the body for stopped engagement, an annular seal of elastomeric material axially compressed in the channel formed by said terminal end and counterbored nut stopped thereby, and a releasible securing means urging the nut axially into stopped engagement with the body determining the axial compression of said annular seal.

Claim 3

The coupling and seal for a pipe connection as set forth in claim 1 and wherein the annular seal is of O-ring configuration.

Claim 4

The coupling and seal for a pipe connection as set forth in claim 1 and wherein the annular seal is of O-ring configuration initially formed with a greater cross sectional diameter than the channel formed by said terminal end and counterbored nut.

Claim 5

The coupling and seal for a pipe connection as set forth in claim 1 and wherein the annular seal is initially formed with a smaller inner diameter than the cylindrical exterior of the pipe and whereby the nut engaged over the pipe is retained on the pipe by said annular seal stretched thereover.

Claim 6

The coupling and seal for a pipe connection as set forth in claim 1 and wherein the annular seal is of O-ring configuration and is initially formed with a smaller inner diameter than the cylindrical exterior of the pipe and whereby the nut engaged over the pipe is retained on the pipe by said annular seal of O-ring configuration stretched thereover.

Claim 7

The coupling and seal for a pipe connection as set forth in claim 1, wherein the annular seal is of O-ring configuration initially formed with a smaller inner diameter than the cylindrical exterior of the pipe and with a greater cross sectional diameter than the channel formed by said terminal end and counterbored nut, and whereby the nut on the pipe when stretched thereover is adapted to be forceably distorted into pressured occupancy within said channel.

Claim 8

The coupling and seal for a pipe connection as set forth in claim 1 wherein the releasible securing means comprises a bayonet slot and lug engagement between the body and nut.

Claim 9

The coupling and seal for a pipe connection as set forth in claim 1 wherein the releasible securing means comprises a balanced arrangement of circumferentially spaced bayonet slot and lug engagements between the body and nut.

Claim 10

The coupling and seal for a pipe connection as set forth in claim 1 wherein the releasible securing means comprises a pair of diametrically opposite and circumferentially extended bayonet slot and lug engagements between the body and nut.

Claim 11

The coupling and seal for a pipe connection as set forth in claim 1 wherein the releasible securing means comprises a pair of diametrically opposite and circumferentially extended bayonet slots in the cylindrical exterior of the body and complementary lugs projecting from the nut and engageable therewith.

Claim 12

The couplng and seal for a pipe connection as set forth in claim 1 wherein the releasible securing means comprises a pair of diametrically opposite and helically extended bayonet slots in the cylindrical exterior of the body and complementary lugs projecting from the nut engageable therewith.

Claim 13

A coupling and seal for connecting to the exterior of the end portion of a pipe and including, a tubular body having an enlarged end portion and with a passage extending therethrough opening at a terminal end in a plane normal to the central axis thereof, a nut having a sleeve portion engageable over the enlarged body portion and having a bore therethrough engageable over the cylindrical exterior of the pipe and with a counterbore terminating at a shoulder therein opening at a face opposing said terminal end of the body for stopped engagement, an annular seal of elastomeric material and O-ring configuration compressed in the channel formed by said terminal end and counterbored nut stopped thereby and initially formed with a smaller inner diameter than the cylindrical exterior of the pipe and whereby the nut engaged over the pipe is retained on the pipe by said O-ring stretched thereover and with a greater cross sectional diameter than the channel formed by said combined body and counterbored nut, and releasible securing means comprising a pair of diametrically opposite and helically extended bayonet slots in the cylindrical exterior of the body and complementary lugs projecting from the nut and engageable therewith to draw the nut into working position toward the body.

Claim 14

A coupling and seal for connecting to the exterior of the end portion of a pipe and including, a tubular body having an enlarged end portion and with a passage extending therethrough opening at a terminal end in a plane normal to the central axis thereof, a nut having a sleeve portion engageable over the enlarged body portion and having a bore therethrough engageable over the cylindrical exterior of the pipe and with a counterbore terminating at a shoulder therein opening at a face opposing said terminal end of the body for stopped engagement, an annular seal of elastomeric material and O-ring configuration compressed in the channel formed by said terminal end and counterbored nut stopped thereby and initially formed with a smaller inner diameter than the cylindrical exterior of the pipe and whereby the nut engaged over the pipe is retained on the pipe by said O-ring stretched thereover and with a greater cross sectional diameter than the channel formed by said combined body and counterbored nut, and releasible securing means comprising a pair of diametrically opposite and helically extended bayonet slots in the cylindrical exterior of the body and complementary lugs projecting from the nut and engageable therewith to draw the nut into working position toward the body.