초록 ▼

A device for temporarily closing a flexible pipe against the flow of fluid through the pipe includes upper and lower jaw members pivotally connected at their first ends to receive and compress the pipe between the jaw members, with pipe engaging surfaces of the jaw members separated from each other

A device for temporarily closing a flexible pipe against the flow of fluid through the pipe includes upper and lower jaw members pivotally connected at their first ends to receive and compress the pipe between the jaw members, with pipe engaging surfaces of the jaw members separated from each other to prevent excessive compression of the pipe. An elongate threaded rod is pivotally connected to the second end of the lower jaw member, to extend between bearing plates connected to and extending outwardly from the second end of the upper jaw member. A nut assembly is threaded onto the threaded rod to be received and tightened against the bearing plates to safely compress the pipe between the jaw members without damaging the pipe wall.

대표청구항 ▼

The invention claimed is: 1. A device for temporarily closing a flexible pipe against the flow of fluid through the pipe, comprising, an elongate first jaw member having a first end and a second end, a pipe engaging surface, and a longitudinal axis; an elongate second jaw member having a first end

The invention claimed is: 1. A device for temporarily closing a flexible pipe against the flow of fluid through the pipe, comprising, an elongate first jaw member having a first end and a second end, a pipe engaging surface, and a longitudinal axis; an elongate second jaw member having a first end and a second end, a pipe engaging surface, and a longitudinal axis, disposed relative to said first jaw member such that said longitudinal axis of said first jaw member and said longitudinal axis of said second jaw member define a plane, and with said pipe engaging surface of said first jaw member facing said pipe engaging surface of said second jaw member; a pair of planar hinge plates disposed in spaced apart parallel relation and connected to said first end of said first jaw member such that said hinge plates extend outwardly from said first end of said first jaw member parallel to said plane defined by said longitudinal axes of said first and second jaw members; a planar pivot plate connected to said first end of said second jaw member and extending outwardly therefrom in said plane defined by said longitudinal axes of said first and second jaw members, said pivot plate having an outer end received between and pivotally connected to said hinge plates with said first ends of said first and second jaw members spaced apart from each other in said plane defined by said longitudinal axes of said first and second jaw members and with said pipe engaging surfaces of said first and second jaw members facing each other; a pair of planar latch hinge plates disposed in spaced apart parallel relation and connected to said second end of said first jaw member with said latch hinge plates parallel to said hinge plates, said latch hinge plates extending from said second end of said first jaw member perpendicular to said longitudinal axis of said first jaw member so as to extend at least partially across said second end of said second jaw member with said first and second jaw members disposed in parallel relation to each other; a pair of planar bearing plates disposed in spaced apart parallel relation and connected to said second jaw member in opposed relation on either side thereof adjacent to said second end thereof with said bearing plates parallel to said pivot plate, said bearing plates extending outwardly from said second end of said second jaw member on either side of said longitudinal axis of said second jaw member; an elongate threaded rod with external threads, said rod having a first end and a second end and a longitudinal axis, said first end disposed between and pivotally connected to said latch hinge plates with said threaded rod extending outwardly therefrom with said longitudinal axis of said threaded rod in said plane defined by said longitudinal axes of said first and second jaw members, such that said threaded rod may be pivoted to extend between said bearing plates and outwardly therefrom; and a nut assembly including a threaded nut with a central aperture and internal threads, threaded onto said threaded rod with said threads of said nut engaged with said threads of said rod such that said nut assembly is moveable along said rod, said nut assembly receivable against and across said bearing plates with said rod extending between said bearing plates. 2. The device of claim 1, wherein said first and second jaw members are formed of solid rods, each being circular in cross-sectional configuration. 3. The device of claim 2, wherein said solid rods are formed of steel. 4. The device of claim 1, wherein said first and second jaw members are formed of hollow pipe, each being circular in cross-sectional configuration. 5. The device of claim 1, wherein said pipe engaging surfaces of said first and second jaw members are curved. 6. The device of claim 1, wherein said nut of said nut assembly is of non-circular external configuration such that said nut may be engaged and turned with a wrench. 7. The device of claim 1, wherein said nut assembly further includes an elongate cylindrical tube with a hollow interior, a longitudinal axis, a first end, and a second end, said tube connected at said first end to said nut and extending outwardly therefrom such that said threaded rod is received through said hollow interior of said tube when said nut is threaded onto said threaded rod, and wherein said nut assembly further includes an elongate first handle rod with a first end and a second end, connected at said first end to said tube adjacent to said second end thereof and extending outwardly therefrom perpendicular to said longitudinal axis of said tube. 8. The device of claim 7, wherein said nut assembly includes a second handle rod connected to and extending outwardly from said tube in opposed coaxial relation to said handle rod. 9. The device of claim 1, wherein said nut assembly further includes a thrust bearing to be received between said nut and said bearing plates. 10. The device of claim 9, wherein said thrust bearing is connected to said nut so as to rotate with said nut. 11. The device of claim 1, wherein said nut of said nut assembly is elongate with a longitudinal axis, a first end, and a second end, and wherein said nut assembly further includes a pair of elongate handle rods, each having a first end and a second end, each connected at its first end to said nut adjacent to said second end thereof, said handle rods extending outwardly from said nut in opposed relation mutually perpendicular to said longitudinal axis of said nut. 12. The device of claim 11, wherein said nut assembly further includes a second nut of greater cross-sectional dimension than said elongate nut, connected to said first end of said elongate nut. 13. The device of claim 12, wherein said nut assembly further includes an annular thrust bearing connected to said second nut opposite said connection of said second nut to said elongate nut, said thrust bearing to be received between said second nut and said bearing plates. 14. A device for temporarily closing a flexible pipe against the flow of fluid through the pipe without damaging the wall of the pipe, comprising, an elongate first jaw member having a first end and a second end, a rounded pipe engaging surface, and a longitudinal axis; an elongate second jaw member having a first end and a second end, a rounded pipe engaging surface, and a longitudinal axis, disposed relative to said first jaw member such that said longitudinal axis of said first jaw member and said longitudinal axis of said second jaw member define a plane, and with said pipe engaging surface of said first jaw member facing said pipe engaging surface of said second jaw member; a pair of planar hinge plates disposed in spaced apart parallel relation and connected to said first end of said first jaw member such that said hinge plates extend outwardly from said first end of said first jaw member parallel to said plane defined by said longitudinal axes of said first and second jaw members; a planar pivot plate connected to said first end of said second jaw member and extending outwardly therefrom in said plane defined by said longitudinal axes of said first and second jaw members, said pivot plate having an outer end received between and pivotally connected to said hinge plates so as to pivotally connect said first and second jaw members with pipe engaging surfaces of said first and second jaw members at said first ends of said first and second jaw members in facing separated relation to each other in said plane defined by said longitudinal axes of said first and second jaw members; a pair of planar latch hinge plates disposed in spaced apart parallel relation and connected to said second end of said first jaw member with said latch hinge plates parallel to said hinge plates, said latch hinge plates extending from said second end of said first jaw member perpendicular to said longitudinal axis of said first law member so as to extend at least partially across said second end of said second jaw member with said first and second jaw members disposed in parallel relation to each other; a pair of planar bearing plates disposed in spaced apart parallel relation and connected to said second jaw member in opposed relation on either side thereof adjacent to said second end thereof with said bearing plates parallel to said pivot plate, said bearing plates extending outwardly from said second end of said second jaw member on either side of said longitudinal axis of said second jaw member; an elongate threaded cylindrical rod with external threads, said rod having a first end and a second end and a longitudinal axis, said rod having a flattened portion extending a short distance from said first end toward said second end, said flattened portion disposed between and pivotally connected to said latch hinge plates with said threaded rod extending outwardly therefrom with said longitudinal axis of said threaded rod in said plane defined by said longitudinal axes of said first and second jaw members, such that said threaded rod may be pivoted to extend between said bearing plates and outwardly therefrom; and a nut assembly including a threaded nut with a central aperture and internal threads, threaded onto said threaded rod with said threads of said nut engaged with said threads of said rod such that said nut assembly is moveable along said threaded rod, an elongate tube with a hollow interior, a longitudinal axis, and fist and second end, connected at said first end to said nut around said central aperture such that said tube extends over said threaded rod without engagement therewith, and a pair of elongate handle rods each having a first end and a second end, each connected at said first end to said tube adjacent to said second end of said tube and extending outwardly therefrom perpendicular to said longitudinal axis of said tube, said nut assembly receivable against and across said bearing plates with said threaded rod extending between said bearing plates. 15. The device of claim 14, wherein said first and second jaw members are formed of solid rods, each with a circular cross-sectional configuration. 16. The device of claim 14, wherein said first and second jaw members are formed of hollow pipe, each with a circular cross-sectional configuration. 17. The device of claim 16, wherein said first and second ends of said first and second jaw members are closed. 18. The device of claim 14, wherein said nut assembly further includes a thrust bearing connected to said nut to be received between said nut and said bearing plates. 19. The device of claim 14, wherein each of said bearing plates includes a tab extending outwardly therefrom perpendicular to said longitudinal axis of said second jaw member, to retain said nut assembly relative to said bearing plates.