Pipe assembly

Claim 2

A pipe assembly including a first pipe section having a bell end terminating in a bell ring, a second pipe section having a spigot end terminating in a spigot ring, and a split, circumferentially expandable and contractible lock ring positioned between an inner face of said bell ring and an outer face of said spigot ring comprising: a. a wall projecting inwardly from adjacent one end of said bell ring toward said spigot ring and terminating in spaced relationship thereto, b. an annular rib projecting outwardly of said spigot ring from adjacent an end thereof and terminating in spaced relationship to said bell ring a distance sufficient to clear said bell ring wall and said lock ring in its expanded condition when said spigot ring is inserted in said bell ring and said lock ring, c. means defining first and second bearing walls on said lock ring extending in opposed relationship to said bell ring wall and said annular rib, respectively, d. means defining a slot through said bell ring intermediate said inwardly projecting wall and said annular rib, e. a pair of spaced lugs projecting upwardly from each end of said split lock ring through said bell ring slot, f. a substantially T-shaped spacer having a stem portion and a head portion, g. said stem of said spacer being positioned in said slot between said lock ring lugs, h. said head of said spacer being positioned outwardly of said bell ring, i. an annular gasket positioned about said spigot end of said second pipe section and projecting radially outwardly therefrom in its uncompressed state a distance greater than said annular rib projects outwardly of said spigot ring, j. means defining an inner annular surface on said lock ring, and k. means defining an inner surface on the base of said stem of said spacer substantially coincident with said annular surface of said lock ring when said spacer is positioned between said lugs of said lock ring to provide a substantially continuous surface and prevent damage to said gasket as said spigot end is inserted in said bell end and said lock ring.

Claim 3

The assembly of claim 1 wherein: a. said head of said spacer is wider than said slot.

Claim 4

The assembly of claim 1 wherein: a. said head of said spacer projects outwardly of said bell ring beyond said lock ring lugs.

Claim 5

The assembly of claim 1 further comprising: a. means defining depressed portions extending along opposite sides of said head to facilitate manual engagement therewith.

Claim 6

The assembly of claim 1 wherein: a. said head of said spacer is wider than said slot, b. said head of said spacer projects outwardly of said bell ring beyond said lock ring lugs, c. means are provided defining depressed portions extending along opposite sides of said head, and d. said base of said stem is curved matching said annular surface of said lock ring.

Claim 7

A pipe assembly including a first pipe section having a bell end terminating in a bell ring, a second pipe section having a spigot end terminating in a spigot ring, and a split, circumferentially expandable and contractible lock ring positioned between an inner face of said bell ring and an outer face of said spigot ring comprising: a. a nose portion projecting inwardly from an end of said bell ring toward said spigot ring and defining an inwardly projecting nose wall, b. first and second spaced annular ribs projecting radially outwardly of said spigot ring, terminating spaced from said bell ring a distance sufficient to clear said nose and said lock ring when said spigot ring is inserted into said bell ring and said lock ring, and defining a groove therebetween, c. a gasket seated in said groove and contacting said bell ring, d. a sloped shoulder on said bell ring spaced from said nose wall and sloped inwardly toward said spigot ring and away from said nose wall, e. a connecting wall extending between said nose wall and said sloped shoulder in spaced relationship to said spigot ring, f. said connecting wall having a step therein defining a radially outwardly offset section of said connecting wall between said step and said nose wall, g. means defining a plurality of openings through said bell ring at said connecting wall thereof, h. means defining a slot through said bell ring at said connecting wall thereof, i. spaced parallel inner and outer walls on said lock ring, j. a pair of spaced lugs projecting outwardly from said outer wall of said lock ring and received in said slot, k. an inner bevelled surface extending outwardly from said inner wall of said lock ring toward said outer wall thereof, l. a first bearing wall extending from said inner bevelled surface of said lock ring to said outer wall thereof in opposition to said nose wall, m. a second bearing wall extending outwardly from said inner wall of said lock ring in opposition to said first annular rib, n. an outer bevelled surface extending outwardly from said second bearing wall toward said outer wall of said lock ring, o. a stepped wall joining said outer bevelled surface and said outer wall of said lock ring, p. said outer wall and said stepped wall of said lock ring being approximately the same size as said offset section and said step, respectively, of said connecting wall of said bell ring for mating engagement therewith when said lock ring is in its expanded condition, and q. a hardenable material cast in said assembly and extending between said second bearing surface and said first annular rib, said outer bevelled surface of said lock ring and opposed portions of said bell ring, and said outer wall of said lock ring and said connecting wall.

Claim 8

A pipe assembly including a first pipe section having a bell end terminating in a bell ring, a second pipe section having a spigot end terminating in a spigot ring, and a split, circumferentially expandable and contractible lock ring positioned between an inner face of said bell ring and an outer face of said spigot ring comprising: a. a nose portion projecting inwardly from an end of said bell ring toward said spigot ring and defining an inwardly projecting nose wall, b. first and second spaced annular ribs projecting radially outwardly of said spigot ring, terminating spaced from said bell ring a distance sufficient to clear said nose and said lock ring when said spigot ring is inserted into said bell ring and said lock ring, and defining a groove therebetween, c. a gasket seated in said groove and contacting said bell ring, d. a sloped shoulder on said bell ring spaced from said nose wall and sloped inwardly toward said spigot ring and away from said nose wall, e. a connecting wall extending between said nose wall and said sloped shoulder in spaced relationship to said spigot ring, f. said connecting wall having a step therein defining a radially outwardly offset section of said connecting wall between said step and said nose wall, g. means defining a plurality of openings through said bell ring at said connecting wall thereof, h. means defining a slot through said bell ring at said connecting wall thereof, i. spaced parallel inner and outer walls on said lock ring, j. a pair of spaced lugs projecting outwardly from said outer wall of said lock ring and received in said slot, k. an inner bevelled surface extending outwardly from said inner wall of said lock ring toward said outer wall thereof, l. a first bearing wall extending from said inner bevelled surface of said lock ring to said outer wall thereof in opposition to said nose wall, m. a second bearing wall extending outwardly from said inner wall of said lock ring in opposition to said first annular rib, n. an outer bevelled surface extending outwardly from said second bearing wall toward said outer wall of said lock ring, o. a stepped wall joining said outer bevelled surface and said outer wall of said lock ring, p. said outer wall and said stepped wall of said lock ring being approximately the same size as said offset section and said step, respectively, of said connecting wall of said bell ring for mating engagement therewith when said lock ring is in its expanded condition, and q. a hardenable material cast in said assembly and extending between said second bearing surface and said first annular rib, said outer bevelled surface of said lock ring and opposed portions of said bell ring, and said outer wall of said lock ring and said connecting wall.

Claim 9

A pipe assembly including a first pipe section having a bell end terminating in a bell ring, a second pipe section having a spigot end terminating in a spigoT ring, and a split, circumferentially expandable and contractible lock ring positioned between an inner face of said bell ring and an outer face of said spigot ring comprising: a. a nose portion projecting inwardly from an end of said bell ring toward said spigot ring and defining an inwardly projecting nose wall, b. first and second spaced annular ribs projecting radially outwardly of said spigot ring, terminating spaced from said bell ring a distance sufficient to clear said nose and said lock ring when said spigot ring is inserted into said bell ring and said lock ring, and defining a groove therebetween, c. a gasket seated in said groove and contacting said bell ring, d. a sloped shoulder on said bell ring spaced from said nose wall and sloped inwardly toward said spigot ring and away from said nose wall, e. a connecting wall extending between said nose wall and said sloped shoulder in spaced relationship to said spigot ring, f. said connecting wall having a step therein defining a radially outwardly offset section of said connecting wall between said step and said nose wall, g. means defining a plurality of openings through said bell ring at said connecting wall thereof with said openings spaced from each other approximately 6 - 18 inches, h. means defining a slot through said bell ring at said connecting wall thereof, i. spaced parallel inner and outer walls on said lock ring, j. a pair of spaced lugs projecting outwardly from said outer wall of said lock ring and received in said slot, k. an inner bevelled surface extending outwardly from said inner wall of said lock ring toward said outer wall thereof, l. a first bearing wall extending from said inner bevelled surface of said lock ring to said outer wall thereof in opposition to said nose wall, m. a second bearing wall extending outwardly from said inner wall of said lock ring in opposition to said first annular rib, n. an outer bevelled surface extending outwardly from said second bearing wall toward said outer wall of said lock ring, o. a stepped wall joining said outer bevelled surface and said outer wall of said lock ring, p. said outer wall and said stepped wall of said lock ring being approximately the same size as said offset section and said step, respectively, of said connecting wall of said bell ring for mating engagement therewith when said lock ring is in its expanded condition, q. a substantially T-shaped spacer positioned between said spaced lugs, r. the stem of said spacer being received in said slot in said bell ring and the head of said spacer being positioned outwardly thereof, s. said head being wider than said slot and projecting outwardly of said bell ring further than said lugs, and t. means defining manually engageable depressions extending along opposite sides of said head of said spacer.

Claim 10

A pipe assembly including a first pipe section having a bell end terminating in a bell ring, a second pipe section having a spigot end terminating in a spigoT ring, and a split, circumferentially expandable and contractible lock ring positioned between an inner face of said bell ring and an outer face of said spigot ring comprising: a. a nose portion projecting inwardly from an end of said bell ring toward said spigot ring and defining an inwardly projecting nose wall, b. first and second spaced annular ribs projecting radially outwardly of said spigot ring, terminating spaced from said bell ring a distance sufficient to clear said nose and said lock ring when said spigot ring is inserted into said bell ring and said lock ring, and defining a groove therebetween, c. a gasket seated in said groove and contacting said bell ring, d. a sloped shoulder on said bell ring spaced from said nose wall and sloped inwardly toward said spigot ring and away from said nose wall, e. a connecting wall extending between said nose wall and said sloped shoulder in spaced relationship to said spigot ring, f. said connecting wall having a step therein defining a radially outwardly offset section of said connecting wall between said step and said nose wall, g. means defining a plurality of openings through said bell ring at said connecting wall thereof with said openings spaced from each other approximately 6 - 18 inches, h. means defining a slot through said bell ring at said connecting wall thereof, i. spaced parallel inner and outer walls on said lock ring, j. a pair of spaced lugs projecting outwardly from said outer wall of said lock ring and received in said slot, k. an inner bevelled surface extending outwardly from said inner wall of said lock ring toward said outer wall thereof, l. a first bearing wall extending from said inner bevelled surface of said lock ring to said outer wall thereof in opposition to said nose wall, m. a second bearing wall extending outwardly from said inner wall of said lock ring in opposition to said first annular rib, n. an outer bevelled surface extending outwardly from said second bearing wall toward said outer wall of said lock ring, o. a stepped wall joining said outer bevelled surface and said outer wall of said lock ring, p. said outer wall and said stepped wall of said lock ring being approximately the same size as said offset section and said step, respectively, of said connecting wall of said bell ring for mating engagement therewith when said lock ring is in its expanded condition, q. a substantially T-shaped spacer positioned between said spaced lugs, r. the stem of said spacer being received in said slot in said bell ring and the head of said spacer being positioned outwardly thereof, s. said head being wider than said slot and projecting outwardly of said bell ring further than said lugs, and t. means defining manually engageable depressions extending along opposite sides of said head of said spacer.

Claim 11

A pipe assembly including a first concrete pipe section having a bell end terminating in a bell ring, a second concrete pipe section having a spigot end terminating in a spigot ring, and a split, circumferentially expandable and contractible lock ring positioned between an innerface of said bell ring and an outer face of said spigot ring comprising: a. a nose portion projecting inwardly from an axial end of said bell ring and defining a first, inwardly projecting wall, b. means defining a sloped shoulder on said bell ring spaced axially inwardly of said bell ring from said first wall, c. a connecting wall extending between said first wall and said sloped shoulder in spaced relationship to said spigot ring, d. said connecting wall having a step therein defining a radially outwardly offset section of said connecting wall displaced radially outwardly from said spigot ring a distance greater than the remainder of said connecting wall, e. means defining a stepped portion on said lock ring complementary to and engageable with said bell ring step when said lock ring is in its expaNded condition to lock in said bell ring offset section said lock ring against displacement as said spigot ring is inserted into said bell ring and lock ring, f. an annular rib projecting outwardly of said spigot ring adjacent to but spaced inwardly from an axial end of said spigot ring and terminating in spaced relationship to said bell ring a distance sufficient to clear said first wall and said lock ring in its expanded condition when said spigot ring is inserted in said bell ring and said lock ring, g. means defining a gasket receiving groove displaced axially outwardly of said annular rib, h. a compressible gasket received in said groove and in its uncompressed state projecting radially outwardly of said spigot ring further than said annular rib, i. means defining an outer bevelled surface on said lock ring extending from said stepped portion thereon in opposition to said sloped shoulder, j. means defining an inner bevelled surface on said lock ring in spaced, substantially parallel relationship to said outer bevelled surface, k. a first bearing wall on said lock ring extending from said outer bevelled surface inwardly toward said spigot ring in opposition to a radial surface of said annular rib, l. a second bearing wall on said lock ring extending from said outer bevelled surface in opposition to said first wall on said nose portion, m. means defining an opening through said bell ring intermediate said sloped shoulder and said first wall of said nose portion, and n. radially outwardly extending lugs attached to ends of said split lock ring and extending through said opening in said bell ring.

Claim 12

A pipe assembly including a first concrete pipe section having a bell end terminating in a bell ring, a second concrete pipe section having a spigot end terminating in a spigot ring, and a split, circumferentially expandable and contractible lock ring positioned between an innerface of said bell ring and an outer face of said spigot ring comprising: a. a nose portion projecting inwardly from an axial end of said bell ring and defining a first, inwardly projecting wall, b. means defining a sloped shoulder on said bell ring spaced axially inwardly of said bell ring from said first wall, c. a connecting wall extending between said first wall and said sloped shoulder in spaced relationship to said spigot ring, d. said connecting wall having a step therein defining a radially outwardly offset section of said connecting wall displaced radially outwardly from said spigot ring a distance greater than the remainder of said connecting wall, e. means defining a stepped portion on said lock ring complementary to and engageable with said bell ring step when said lock ring is in its expaNded condition to lock in said bell ring offset section said lock ring against displacement as said spigot ring is inserted into said bell ring and lock ring, f. an annular rib projecting outwardly of said spigot ring adjacent to but spaced inwardly from an axial end of said spigot ring and terminating in spaced relationship to said bell ring a distance sufficient to clear said first wall and said lock ring in its expanded condition when said spigot ring is inserted in said bell ring and said lock ring, g. means defining a gasket receiving groove displaced axially outwardly of said annular rib, h. a compressible gasket received in said groove and in its uncompressed state projecting radially outwardly of said spigot ring further than said annular rib, i. means defining an outer bevelled surface on said lock ring extending from said stepped portion thereon in opposition to said sloped shoulder, j. means defining an inner bevelled surface on said lock ring in spaced, substantially parallel relationship to said outer bevelled surface, k. a first bearing wall on said lock ring extending from said outer bevelled surface inwardly toward said spigot ring in opposition to a radial surface of said annular rib, l. a second bearing wall on said lock ring extending from said outer bevelled surface in opposition to said first wall on said nose portion, m. means defining an opening through said bell ring intermediate said sloped shoulder and said first wall of said nose portion, and n. radially outwardly extending lugs attached to ends of said split lock ring and extending through said opening in said bell ring.