A fitting includes a hollow body, a sealing member, and a draw mechanism. The fitting mechanism includes a primary actuation element coupled with the body at a first end, and a plurality of secondary actuation elements coupled to the sealing member. The plurality of secondary actuation elements are
A fitting includes a hollow body, a sealing member, and a draw mechanism. The fitting mechanism includes a primary actuation element coupled with the body at a first end, and a plurality of secondary actuation elements coupled to the sealing member. The plurality of secondary actuation elements are positioned in an interior of the hollow body and circumferentially spaced from each other. The plurality of secondary actuation elements are also engaged with the primary actuation element such that actuation of the primary actuation element draws the plurality of secondary actuation elements axially towards the opening at the first end of the hollow body thereby translating the sealing member from an open position to a sealing position.
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1. A fitting, comprising: a hollow body that includes an opening at a first end;a sealing member positioned on an interior surface of the hollow body;a draw mechanism including a primary actuation element coupled with the hollow body at the first end, and a plurality of secondary actuation elements
1. A fitting, comprising: a hollow body that includes an opening at a first end;a sealing member positioned on an interior surface of the hollow body;a draw mechanism including a primary actuation element coupled with the hollow body at the first end, and a plurality of secondary actuation elements coupled to the sealing member, the plurality of secondary actuation elements positioned in an interior of the hollow body and circumferentially spaced from each other, the plurality of secondary actuation elements engaged with the primary actuation element such that actuation of the primary actuation element draws the plurality of secondary actuation elements axially towards the opening at the first end of the hollow body, thereby translating the sealing member from an open position to a sealing position;wherein the primary actuation element includes a plurality of sloped surfaces and each one of the secondary actuation elements is engaged with a respective one of the plurality of sloped surfaces. 2. The fitting of claim 1, further comprising a gripping element coupled to one of the plurality of secondary actuation elements such that the gripping element is moved axially towards the opening at the first end of the hollow body and radially inward towards a longitudinal axis of the hollow body from an open position to an engaged position by actuating the primary actuation element. 3. The fitting of claim 2, wherein the gripping element abuts the sealing member. 4. The fitting of claim 3, wherein the gripping element is not fixedly attached to either of the one of the plurality of secondary actuation members or the sealing member. 5. The fitting of claim 1, further comprising a plurality of gripping elements, each of the gripping elements coupled to one of the plurality of secondary actuation elements such that the plurality of gripping elements are moved axially towards the first end of the hollow body and radially inward towards a longitudinal axis of the hollow body from an open position to an engaged position by actuating the primary actuation element. 6. The fitting of claim 1 wherein the hollow body also includes an opening at an opposing, second end. 7. The fitting of claim 1 wherein the hollow body includes an end cap at an opposing, second end. 8. The fitting of claim 1 wherein the hollow body is a portion of a hydrant. 9. The fitting of claim 1 wherein the hollow body is a portion of a valve. 10. A fitting, comprising: a hollow body that includes an opening at a first end;a sealing member positioned on an interior surface of the hollow body;a draw mechanism including a primary actuation element coupled with the hollow body at the first end, and a plurality of secondary actuation elements coupled to the sealing member, the plurality of secondary actuation elements positioned in an interior of the hollow body and circumferentially spaced from each other, the plurality of secondary actuation elements engaged with the primary actuation element such that actuation of the primary actuation element draws the plurality of secondary actuation elements axially towards the opening at the first end of the hollow body, thereby translating the sealing member from an open position to a sealing position;wherein the first end of the hollow body includes a plurality of circumferentially spaced tapered tabs that converge towards a longitudinal axis at the first end, adjacent ones of the tabs being separated in the first circumferential direction by longitudinally extending slots and wherein the secondary actuation members each extend through a respective one of the longitudinally extending slots. 11. The fitting of claim 10, further comprising a gripping element coupled to one of the plurality of secondary actuation elements such that the gripping element is moved axially towards the opening at the first end of the hollow body and radially inward towards a longitudinal axis of the hollow body from an open position to an engaged position by actuating the primary actuation element. 12. The fitting of claim 11, wherein the gripping element abuts the sealing member. 13. The fitting of claim 12, wherein the gripping element is not fixedly attached to either of the one of the plurality of secondary actuation members or the sealing member. 14. The fitting of claim 10, further comprising a plurality of gripping elements, each of the gripping elements coupled to one of the plurality of secondary actuation elements such that the plurality of gripping elements are moved axially towards the first end of the hollow body and radially inward towards a longitudinal axis of the hollow body from an open position to an engaged position by actuating the primary actuation element. 15. A fitting, comprising: a hollow body that includes an opening at a first end;a sealing member positioned on an interior surface of the hollow body;a draw mechanism including a primary actuation element coupled with the hollow body at the first end, and a plurality of secondary actuation elements coupled to the sealing member, the plurality of secondary actuation elements positioned in an interior of the hollow body and circumferentially spaced from each other, the plurality of secondary actuation elements engaged with the primary actuation element such that actuation of the primary actuation element draws the plurality of secondary actuation elements axially towards the opening at the first end of the hollow body, thereby translating the sealing member from an open position to a sealing position;wherein the primary actuation element is rotatably coupled with the hollow body at the first end and rotation of the primary actuation element in a first circumferential direction with respect to a longitudinal axis of the hollow body draws the plurality of secondary actuation elements axially towards the opening at the first end of the hollow body, thereby dragging the sealing member from an open position to a sealing position. 16. The fitting of claim 15, wherein the hollow body is coupled to the primary actuation element such that the primary actuation element is rotated in the first circumferential direction by actuating at least one bolt. 17. The fitting of claim 15, further comprising a bolt that extends from a first lug that extends from the hollow body to a second lug that extends from the primary actuation element, wherein the first and second lugs are positioned such that actuating the bolt causes the primary actuation element to rotate in the first circumferential direction. 18. The fitting of claim 15, further comprising a gripping element coupled to one of the plurality of secondary actuation elements such that the gripping element is moved axially towards the opening at the first end of the hollow body and radially inward towards a longitudinal axis of the hollow body from an open position to an engaged position by actuating the primary actuation element. 19. The fitting of claim 18, wherein the gripping element abuts the sealing member. 20. The fitting of claim 19, wherein the gripping element is not fixedly attached to either of the one of the plurality of secondary actuation members or the sealing member. 21. The fitting of claim 15, further comprising a plurality of gripping elements, each of the gripping elements coupled to one of the plurality of secondary actuation elements such that the plurality of gripping elements are moved axially towards the first end of the hollow body and radially inward towards a longitudinal axis of the hollow body from an open position to an engaged position by actuating the primary actuation element. 22. A fitting, comprising: a hollow body that includes an opening at a first end;an annular sealing member positioned on an interior surface of the hollow body; andan actuation mechanism configured to draw the sealing member axially towards the first end of the hollow body and radially inward towards a longitudinal axis of the hollow body by actuating at least one bolt that is coupled to the hollow body and the actuation mechanism, the at least one bolt extending substantially transverse to the longitudinal axis of the hollow body; anda plurality of restraining elements circumferentially arranged on the interior surface of the hollow body, the plurality of restraining elements being arranged axially between the sealing member and the first end of the hollow body. 23. A fitting, comprising: a hollow body that includes an opening at a first end;an annular sealing member positioned on an interior surface of the hollow body; andan actuation mechanism configured to draw the sealing member axially towards the first end of the hollow body and radially inward towards a longitudinal axis of the hollow body by actuating at least one bolt that is coupled to the hollow body and the actuation mechanism, the at least one bolt extending substantially transverse to the longitudinal axis of the hollow body;wherein the actuation member includes a ring rotatably mounted to the hollow body and a plurality of follower elements, and each of the follower elements are coupled to the annular sealing ring, andwherein the at least one bolt is coupled to the ring such that actuating the at least one bolt causes the ring to rotate in a circumferential direction with respect to the hollow body, and the plurality of follower elements engage the ring such that rotation of the ring causes the plurality of follower elements to translate towards the first end of the hollow body. 24. The fitting of claim 23, wherein the ring includes a plurality of cam surfaces that vary in axial length along the circumferential direction, and each one of the follower elements includes an engagement portion that engages a respective one of the cam surfaces of the ring. 25. The fitting of claim 24, wherein the engagement portion of each of the follower elements is a hook. 26. The fitting of claim 25, wherein the hook includes a sloped portion that corresponds in shape to an axial end surface of the cam surfaces of the ring. 27. The fitting of claim 25, wherein the ring is mounted to an external surface of the hollow body, the first end of the hollow body includes a plurality of circumferentially spaced slots that extend through the hollow body from the external surface of the hollow body to the internal surface of the hollow body and that extend substantially parallel to the longitudinal axis of the hollow body, and the hook on each one of the follower elements extends through a respective one of the slots in the hollow body. 28. The fitting of claim 23, wherein ring includes a first bolt receiver, the hollow body includes a second bolt receiver, and the at least one bolt extends through the first and second bolt receivers. 29. The fitting of claim 23, wherein each follower element includes a stem that extends axially from the engagement portion to a base portion, and the base portion is coupled to the annular sealing member. 30. The fitting of claim 23, further comprising a plurality of restraining elements arranged circumferentially on the interior surface of the hollow body between adjacent follower elements and axially between the sealing member and the first end of the hollow body.
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이 특허에 인용된 특허 (124)
Kunsman Donald R. (Easton PA), Abrasive grip pipe coupling.
Warehime Kevin S. (Taneytown MD) Munley Daniel T. (Laurel MD) Oh Thomas S. (Columbia MD) Swensen Jeffrey E. (Eldersburg MD), Compact pipe coupling device.
Dent Larry G. (Castle Rock WA) Denison George F. (Seattle WA), Cooperating combination of a gland and a grip ring installed in restrained sealed bolted joints of fluid piping systems.
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