Pipe joint

Claim 2

A pipe joint comprising: a first tube, a first flange at one end of said first tube, a second tube, an annular projection on said second tube adjacent one end thereof, one portion of said annular projection being a second flange, a packing interposed between said first and second flanges, a joint body, said joint body having a coupling portion at each end thereof and a raised projecting portion between said coupling portions, one of said coupling portions abutting and extending over a substantial portion of the annular periphery of a portion of said first tube adjacent said one end thereof, and the other coupling portion abutting and extending over a substantial portion of the annular periphery of a portion of said second tube adjacent said annular projection, said raised projecting portion abutting and extending over a substantial portion of said first flange and the portion of said annular projection other than said second flange, and clamping means for clamping said joint body to said first and second tubes.

Claim 3

The pipe joint as claimed in claim 1 wherein said annular projection is substantially V-shaped in longitudinal cross-section with the bottom of the V being radially outward of the top of the V, and said second flange being one of two legs of the V.

Claim 4

The pipe joint as claimed in claim 2 wherein: said one leg of the V is the leg of the two legs which is closest to said one end of said second tube.

Claim 5

The pipe joint as defined in claim 1, wherein said joint body comprises two separate members each of which extends around substantially one half the circumference of the portions of each of said first and second tubes, a receiving pawl channel shaped in section on one end of one of said members and a flange on the other end of said one member, a stopper pawl on one end of the other of said members, said stopper pawl engageable with said receiving pawl, a flange on the other end of said other member to face said flange on said one member.

Claim 6

The pipe joint as defined in claim 4, further comprising ribs on each end of each of said members.

Claim 7

The pipe joint as claimed in claim 1 wherein said joint body comprises two separate members each of which extends over substantially one half the circumference of the portion of each of said first and second tubes, a flange on each circumferential end of each of said members, each flange on one of said members facing a corresponding flange of the other of said members.

Claim 8

The pipe joint as claimed in claim 1, wherein said joint body comprises two separate members each of which extends over substantially one half the circumference of the portion of each of said first and second tubes, a flange on one end of each of said members, and the flange on one of said members faces the flange on the other of said members.

Claim 9

The pipe joint as defined in claim 7, wherein said clamping means comprises a tightening band.

Claim 10

The pipe joint as claimed in claim 8 wherein said tightening band comprises a first portion abutting and extending over a substantial portion of one of said coupling portions of said joint body and a second portion abutting and extending over a substantial portion of the other coupling portion of said joint body and two longitudinal connecting portions, one of said connecting portions connecting one end of said first portion to one end of said second portion, the other of said connecting portions connecting the other end of said first portion to the other end of said second portion, a bolt hole through each of said connecting portions, said clamping means further comprises a bolt and a nut on said bolt, said bolt passing through each of said bolt holes with the connecting portions clamped between the head of the bolt and said nut.

Claim 11

The pipe joint as claimed in claim 1 wherein said clamping means comprises a nut and a bolt.

Claim 12

The pipe joint as claimed in claim 1 wherein said annular projection is spaced from said one end of said second tube, and the portion of said second tube between said annular projection and said one end is a spigot.

Claim 13

The pipe joint as claimed in claim 1 wherein said raised projecting portion comprises first, second, and third portions, said first portion abuts and extends over a substantial portion of said first flange, said second portion abuts and extends over a substantial portion of the portion of said annular projection other than second flange, and said third portion extends longitudinally and interconnects said first and second portions.

Claim 14

The pipe joint as claimed in claim 1 wherein: said first flange is an annular flange, said second flange is an annular flange, said packing is annular, and said joint body is substantially tubular.

Claim 15

A pipe joint comprising: a first tube, a first annular flange at one end of said first tube, a second tube, an annular projection on said second tube spaced from one end thereof, one portion of said annular projection being a second annular flange, the portion of said second tube between said one end thereof and said annular projection being a spigot, an annular packing interposed between said first and second flanges, a substantially tubular joint body, said joint body having a substantially tubular coupling portion at each end thereof and a raised projecting portion between said coupling portions, one of said coupling portions abutting and extending over substantially the entire annular periphery of a portion of said first tube adjacent said one end thereof, and the other of said coupling portions abutting and extending over substantially the entiRe annular periphery of a portion of second tube adjacent said annular projection, said raised projecting portion having first, second, and third portions, said first portion abutting and extending over substantially the entire annular periphery of said first flange, said second portion abutting and extending over substantially the entire annular periphery of the portion of said annular projection other than said second flange, said third portion interconnecting said first and second portions, and clamping means for clamping said joint body to said first and second tubes.

Claim 16

A pipe joint comprising: a first tube, a first annular flange at one end of said first tube, a second tube, an annular projection on said second tube spaced from one end thereof, one portion of said annular projection being a second annular flange, the portion of said second tube between said one end thereof and said annular projection being a spigot, an annular packing interposed between said first and second flanges, a substantially tubular joint body, said joint body having a substantially tubular coupling portion at each end thereof and a raised projecting portion between said coupling portions, one of said coupling portions abutting and extending over substantially the entire annular periphery of a portion of said first tube adjacent said one end thereof, and the other of said coupling portions abutting and extending over substantially the entiRe annular periphery of a portion of second tube adjacent said annular projection, said raised projecting portion having first, second, and third portions, said first portion abutting and extending over substantially the entire annular periphery of said first flange, said second portion abutting and extending over substantially the entire annular periphery of the portion of said annular projection other than said second flange, said third portion interconnecting said first and second portions, and clamping means for clamping said joint body to said first and second tubes.

Claim 17

A pipe joint comprising: a first tube, a first annular flange at one end of said first tube, said first annular flange extending radially outwardly and longitudinally away from said one end of said first tube at an angle relative to the longitudinal center line of said first tube, a second tube, an annular projection on said second tube adjacent one end thereof, said annular projection being substantially V-shaped in longitudinal cross-section with the bottom of the V being radially outward of the top of the V, one portion of said annular projection being a second annular flange, said second flange being one of the two legs of the V of the annular projection which is closest to said one end of said second tube, said second flange extending radially outward from said second tube at an angle relative to the longitudinal center line of said second tube, said angle being substantially the same as the angle of said first flange, an annular packing interposed between said first and second flanges, a substantially tubular joint body, said joint body having a substantially tubular coupling portion at each end thereof and a raised projecting portion between said coupling portions, one of said coupling portions abutting and extending over substantially the entire annular periphery of a portion of said first tube adjacent said one end thereof, and the other of said coupling portions abutting and extending over substantially the entire annular periphery of a portion of said second tube adjacent the leg of the V-shaped annular projection most remote from said one end, said raised projecting portion having a first portion, a second portion and a third substantially tubular portion, said first portion abutting and extending over substantially the entire annular periphery of said first flange, said second portion abutting and extending over substantially the entire annular periphery of the leg of the V-shaped annular projection most remote from said one end of said second tube, said third substantially tubular portion interconnecting said first and second portions, and clamping means for clamping said joint body to said first and second tubes.

Claim 18

A pipe joint comprising: a first tube, a first annular flange at one end of said first tube, said first annular flange extending radially outwardly and longitudinally away from said one end of said first tube at an angle relative to the longitudinal center line of said first tube, a second tube, an annular projection on said second tube adjacent one end thereof, said annular projection being substantially V-shaped in longitudinal cross-section with the bottom of the V being radially outward of the top of the V, one portion of said annular projection being a second annular flange, said second flange being one of the two legs of the V of the annular projection which is closest to said one end of said second tube, said second flange extending radially outward from said second tube at an angle relative to the longitudinal center line of said second tube, said angle being substantially the same as the angle of said first flange, an annular packing interposed between said first and second flanges, a substantially tubular joint body, said joint body having a substantially tubular coupling portion at each end thereof and a raised projecting portion between said coupling portions, one of said coupling portions abutting and extending over substantially the entire annular periphery of a portion of said first tube adjacent said one end thereof, and the other of said coupling portions abutting and extending over substantially the entire annular periphery of a portion of said second tube adjacent the leg of the V-shaped annular projection most remote from said one end, said raised projecting portion having a first portion, a second portion and a third substantially tubular portion, said first portion abutting and extending over substantially the entire annular periphery of said first flange, said second portion abutting and extending over substantially the entire annular periphery of the leg of the V-shaped annular projection most remote from said one end of said second tube, said third substantially tubular portion interconnecting said first and second portions, and clamping means for clamping said joint body to said first and second tubes.