Pipe connection

Claim 2

A pipe connection, comprising an elastic ringlike sealing member connected between first and second pipe parts, the second pipe part having a substantially circular opening formed in the arcuate wall thereof and defined by a substantially annular edge, said sealing member having an annular recess formed on the external surface thereof, said recess being defined by at least a bottom wall and a side wall, said annular edge being positioned in said recess and disposed in snug sealing engagement with said sealing member, the bottom wall of said recess being provided with at least one circumferential rib disposed in engagement with the circumferential face of said annular edge, said sealing member having an inner annular surface formed with a screw thread thereon, and said first pipe part having a portion formed with an external screw thread thereon which is similar to the screw thread formed on the internal surface of said sealing member, whereby said portion of said first pipe part is threadably and sealingly connected to said sealing member.

Claim 3

A pipe connection according to claim 1, wherein said recess comprises a channel-like groove of substantially uniform width as defined between opposed and substantially parallel side walls.

Claim 4

In combination, a first pipe of rather large diameter having a substantially circular opening formed in the arcuate sidewall thereof, said opening being defined by a substantially annular edge portion of said sidewall, a second pipe of relatively small diameter in comparison to said first pipe and extending substantially transverse to said first pipe, said second pipe having an exteriorly threaded end portion projecting into the opening formed in said first pipe, and connecting means for sealingly connecting the end portion of said second pipe to the annular edge portion surrounding the opening formed in said first pipe, the improvement wherein said connecting means comprises a one-piece ringlike sealing member constructed of an elastomeric material, said ringlike sealing member having a bore extending therethrough defined by an internal surface having a screw thread formed thereon which is compatible with the screw thread formed on the end portion of said second pipe, the screw thread formed on the end portion of said second pipe and the screw thread formed on the internal surface of said sealing member being slightly tapered relative to one another for causing said sealing member to be elastically deformed outwardly into tight sealing engagement with said first pipe when said end portion of said second pipe is threadably engaged within said bOre, and said sealing member having an annular groove formed therein and externally surrounding same, said annular groove being of a substantially channel-shaped cross section and being defined by a bottom wall and a pair of spaced and substantially parallel side walls, said groove having a substantially uniform width throughout the circumferential length and depth thereof, the annular edge portion of said first pipe being disposed within said annular groove and positioned in sealing engagement with said sealing member, the bottom wall of said groove being provided with at least one circumferential rib projecting outwardly therefrom and disposed for sealing engagement with the circumferential face of said annular edge portion, and the side wall on said sealing member being compressed into snug sealing engagement with the external surface of said first pipe due to the elastic deformation of said sealing member when said end portion of said second pipe is threaded into said bore.

Claim 5

In combination, a first pipe of rather large diameter having a substantially circular opening formed in the arcuate sidewall thereof, said opening being defined by a substantially annular edge portion of said sidewall, a second pipe of relatively small diameter in comparison to said first pipe and extending substantially transverse to said first pipe, said second pipe having an exteriorly threaded end portion projecting into the opening formed in said first pipe, and connecting means for sealingly connecting the end portion of said second pipe to the annular edge portion surrounding the opening formed in said first pipe, the improvement wherein said connecting means comprises a one-piece ringlike sealing member constructed of an elastomeric material, said ringlike sealing member having a bore extending therethrough defined by an internal surface having a screw thread formed thereon which is compatible with the screw thread formed on the end portion of said second pipe, the screw thread formed on the end portion of said second pipe and the screw thread formed on the internal surface of said sealing member being slightly tapered relative to one another for causing said sealing member to be elastically deformed outwardly into tight sealing engagement with said first pipe when said end portion of said second pipe is threadably engaged within said bOre, and said sealing member having an annular groove formed therein and externally surrounding same, said annular groove being of a substantially channel-shaped cross section and being defined by a bottom wall and a pair of spaced and substantially parallel side walls, said groove having a substantially uniform width throughout the circumferential length and depth thereof, the annular edge portion of said first pipe being disposed within said annular groove and positioned in sealing engagement with said sealing member, the bottom wall of said groove being provided with at least one circumferential rib projecting outwardly therefrom and disposed for sealing engagement with the circumferential face of said annular edge portion, and the side wall on said sealing member being compressed into snug sealing engagement with the external surface of said first pipe due to the elastic deformation of said sealing member when said end portion of said second pipe is threaded into said bore.

Claim 6

In combination, a first pipe of rather large diameter having a substantially circular opening formed in the arcuate side wall thereof, said opening being defined by a substantially annular edge portion of said sidewall, a second pipe of relatively small diameter in comparison to said first pipe and extending substantially transverse to said first pipe, said second pipe having an exteriorly threaded end portion projecting into the opening formed in said first pipe, and connecting means for sealingly connecting the end portion of said second pipe to the annular edge portion surrounding the opening formed in said first pipe, the improvement wherein said connecting means comprises a one-piece ringlike sealing member constructed of an elastomeric material, said ringlike sealing member having a substantially uniform bore extending therethrough defined by an internal surface having a screw thread formed thereon which is compatible with the screw thread formed on the end portion of said second pipe, the exterior screw thread formed on the end portion of said second pipe tapering inwardly toward the free end thereof for causing the part of the sealing member positioned externally of said first pipe to be elastically deformed outwardly into tight sealing engagement with the external surface of said first pipe in surrounding relationship to said opening when said end portion of said second pipe is threadably engaged within said bore, said second pipe having a shoulder disposed adjacent the inner end of said end portion, said shoulder being positioned in clamping engagement with the external part of said sealing member for additionally causing same to be elastically deformed and tightly sealingly clamped against the external surface of said first pipe in surrounding relationship to said opening, said sealing member having an annular groove formed therein and externally surrounding same, said annular groove being of a substantially channel-shaped cross section and being defined by a bottom wall and a pair of spaced and substantially parallel side walls, said groove having a substantially uniform width throughout the circumferential length and depth thereof, and the annular edge portion of said first pipe being disposed within said annular groove and positioned in sealing engagement with said sealing member, the side wall on said sealing member being compressed into snug sealing engagement with the external surface of said first pipe due to the elastic deformation of said sealing member when said end portion of said second pipe is threaded into said bore.

Claim 7

In combination, a first pipe of rather large diameter having a substantially circular opening formed in the arcuate side wall thereof, said opening being defined by a substantially annular edge portion of said sidewall, a second pipe of relatively small diameter in comparison to said first pipe and extending substantially transverse to said first pipe, said second pipe having an exteriorly threaded end portion projecting into the opening formed in said first pipe, and connecting means for sealingly connecting the end portion of said second pipe to the annular edge portion surrounding the opening formed in said first pipe, the improvement wherein said connecting means comprises a one-piece ringlike sealing member constructed of an elastomeric material, said ringlike sealing member having a substantially uniform bore extending therethrough defined by an internal surface having a screw thread formed thereon which is compatible with the screw thread formed on the end portion of said second pipe, the exterior screw thread formed on the end portion of said second pipe tapering inwardly toward the free end thereof for causing the part of the sealing member positioned externally of said first pipe to be elastically deformed outwardly into tight sealing engagement with the external surface of said first pipe in surrounding relationship to said opening when said end portion of said second pipe is threadably engaged within said bore, said second pipe having a shoulder disposed adjacent the inner end of said end portion, said shoulder being positioned in clamping engagement with the external part of said sealing member for additionally causing same to be elastically deformed and tightly sealingly clamped against the external surface of said first pipe in surrounding relationship to said opening, said sealing member having an annular groove formed therein and externally surrounding same, said annular groove being of a substantially channel-shaped cross section and being defined by a bottom wall and a pair of spaced and substantially parallel side walls, said groove having a substantially uniform width throughout the circumferential length and depth thereof, and the annular edge portion of said first pipe being disposed within said annular groove and positioned in sealing engagement with said sealing member, the side wall on said sealing member being compressed into snug sealing engagement with the external surface of said first pipe due to the elastic deformation of said sealing member when said end portion of said second pipe is threaded into said bore.