Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
262 words
A plastic pipe adapted for coupling with a clamp-type coupling, said adapted pipe comprising: a. said pipe recessed circumferentially on its outside surface near its coupling end suitably to retain a sleeve within the recess and further indented within said recessed area with three circumferential grooves; b. a split locking ring inserted in a first groove furthest removed from the coupling end of pipe, said locking ring of dimensions substantially to fill said first groove; c. a gasket ring of resilient material inserted in and substantially filling a second groove; d. a first metal sleeve of substantially the same outer circumference as said locking ring, said first sleeve inserted in said recess and extending from abuttment with said locking ring toward the end of the recess furthest removed from the coupling end of the pipe; e. a second metal sleeve of substantially the same outer circumference as said locking ring,, said second sleeve inserted in said recess and extending from abuttment with said locking ring toward the end of the recess nearest the coupling end of the pipe, said second sleeve encasing the gasket ring in the second groove and indented to fit into a third groove retaining the grooved configuration, said third groove nearest to the coupling end of the pipe and spaced from this end to receive a coupling device; and f. a third metal sleeve of inner circumference sufficient slidably to engage the outer circumference of said first and second metal sleeves, said third sleeve fixed into position encasing the locking ring and overlapping the first and second sleeves.
Claim 2
Dependent Claim
262 words
A plastic pipe adapted for coupling with a clamp-type coupling, said adapted pipe comprising: a. said pipe recessed circumferentially on its outside surface near its coupling end suitably to retain a sleeve within the recess and further indented within said recessed area with three circumferential grooves; b. a split locking ring inserted in a first groove furthest removed from the coupling end of pipe, said locking ring of dimensions substantially to fill said first groove; c. a gasket ring of resilient material inserted in and substantially filling a second groove; d. a first metal sleeve of substantially the same outer circumference as said locking ring, said first sleeve inserted in said recess and extending from abuttment with said locking ring toward the end of the recess furthest removed from the coupling end of the pipe; e. a second metal sleeve of substantially the same outer circumference as said locking ring,, said second sleeve inserted in said recess and extending from abuttment with said locking ring toward the end of the recess nearest the coupling end of the pipe, said second sleeve encasing the gasket ring in the second groove and indented to fit into a third groove retaining the grooved configuration, said third groove nearest to the coupling end of the pipe and spaced from this end to receive a coupling device; and f. a third metal sleeve of inner circumference sufficient slidably to engage the outer circumference of said first and second metal sleeves, said third sleeve fixed into position encasing the locking ring and overlapping the first and second sleeves.
Claim 3
Dependent Claim
28 words
A plastic pipe of claim 1 wherein the outer circumference of said first and second sleeves is substantially the same as the outer circumferencce of the plastic pipe.
Claim 4
Dependent Claim
31 words
A plastic pipe of claim 1 wherein said third metal sleeve is affixed to at least one of said split locking rings, said first metal sleeve and said second metal sleeve.
Claim 5
Dependent Claim
24 words
A plastic pipe of claim 3 wherein the third metal sleeve is fixedly adapted by means selected from among rivets, tapping screws, and welding.
Claim 6
Dependent Claim
60 words
A coupled plastic pipe comprising a pair of plastic pipes adapted to coupling according to claim 1, said pipes aligned in coupling position and held in said position with a split ring comprising a circular band with two inward projections keyed into a groove of an adapted plastic pipe, said band overlying and retaining a gasket sealing the coupling joint.
Claim 7
Dependent Claim
22 words
A coupled pipe of claim 3 comprising a split ring united by bolts passing through aligned projections on portions of said ring.
Claim 8
Dependent Claim
63 words
A method for forming an adapted plastic pipe of claim 1 comprising: a. forming said recess and said three grooves in the outside surface of a pipe; b. inserting said first metal sleeve; c. inserting said locking ring and said gasket ring; d. inserting said second metal sleeve; e. slidably positioning said third metal sleeve; and f. fixing said third sleeve in position.