One embodiment of the invention is a horizontal scaffold member having a primary end connector and a secondary end connector. Each end connector is configured to couple to a cup on a vertical scaffold member. Each end connector includes a wedge assembly having a handle and a wedge, movable with resp
One embodiment of the invention is a horizontal scaffold member having a primary end connector and a secondary end connector. Each end connector is configured to couple to a cup on a vertical scaffold member. Each end connector includes a wedge assembly having a handle and a wedge, movable with respect to the wedge head to a latched and unlatched position. The primary wedge assembly is connected to the secondary wedge assembly by a cable, and configured so that moving the primary wedge assembly to an unlatched position also moves the secondary wedge assembly to an unlatched position.
대표청구항▼
1. A horizontal scaffold member comprising: a tubular member and a primary wedge head attached to one end of the member and a secondary wedge head attached to the opposite end of the member, said primary and secondary wedge heads having an engagement portion configured to couple to a rosette annular
1. A horizontal scaffold member comprising: a tubular member and a primary wedge head attached to one end of the member and a secondary wedge head attached to the opposite end of the member, said primary and secondary wedge heads having an engagement portion configured to couple to a rosette annular member on a vertical scaffold member,said primary and secondary wedge heads further comprising a respective primary wedge assembly and secondary wedge assembly, each of said wedge assemblies comprising a wedge and coupled handle partially positioned within each respective wedge head, each said wedge assembly moving in said respective wedge head from a latched to an unlatched position, wherein in said latched position, when said tubular member is coupled to a vertical scaffold member, said tubular member is latched to said rosette annular member, and in said unlatched position, said tubular member is unlatched to said rosette annular member,a cable connecting said primary wedge assembly to said secondary wedge assembly, said primary wedge assembly and said secondary wedge assembly both moving to said unlatched position when said primary wedge is moved from a latched to an unlatched position; and when said secondary wedge assembly is moved to said unlatched position, said primary wedge assembly remains in said latched position. 2. The horizontal scaffold member of claim 1 wherein each of said wedge assemblies are separately biased to said respective latched positions. 3. The horizontal scaffold member according to claim 2 wherein each of said wedge assemblies further comprises a spring member that biases each respective said wedge assembly to a latched position. 4. The horizontal scaffold member according to claim 1 wherein said wedge head assemblies are pivotable in said wedge head. 5. The horizontal scaffold member according to claim 1 where the engagement portion comprises a tooth or projecting member. 6. The horizontal member of claim 5 wherein said tooth or projecting member is configured to engage with openings in said rosette annular member. 7. The horizontal scaffold member according to claim 1 further comprising a rotatable member mounted in said primary wedge head and said cable sliding on said rotatable member when said primary wedge head assembly is moved from a latched to unlatched position. 8. The horizontal scaffold member according to claim 1 wherein said cable is attached to said primary wedge head assembly at said handle of said wedge head assembly, and wherein said cable is attached to said secondary wedge head assembly at said wedge of said secondary wedge head assembly. 9. The horizontal scaffold member according to claim 1 wherein said cable is attached to said secondary wedge head assembly at said wedge of said secondary wedge head assembly, and wherein said cable is attached to said primary wedge head assembly at said handle of said primary wedge head assembly. 10. The horizontal scaffold member according to claim 8 wherein said 1, wherein said primary handle is shaped different from said secondary handle, to allow an operator to distinguish between the primary and secondary handles. 11. The horizontal scaffold member of claim 8 wherein said cable is a wire rope. 12. A horizontal scaffold member comprising: a tubular member and a primary wedge head attached to one end of the tubular member and a secondary wedge head attached to the opposite end of the tubular member, said primary and secondary wedge heads having an engagement portion configured to couple to an annular ring on a vertical scaffold member,said primary and secondary wedge heads further comprising a respective primary wedge assembly and secondary wedge assembly, each of said wedge assemblies comprising a wedge and coupled handle partially positioned within each respective wedge head, each said wedge assembly moving in said respective wedge head from a latched to an unlatched position, wherein in said latched position, when said horizontal scaffold member is coupled to a vertical scaffold member, said wedge is coupled to an annular ring on said vertical scaffold, and in a unlatched position said wedge is uncoupled from said annular ring on a vertical member;a cable connecting said primary wedge assembly to said secondary wedge assembly; whereby when said primary wedge assembly is moved from a latched to an unlatched position, said secondary wedge also moves, by action of said cable, to said unlatched position, and whereby when said secondary wedge assembly is moved from a latched to an unlatched position, said primary wedge assembly does not move, by action of said cable, to an unlatched position. 13. The horizontal scaffold member of claim 12 wherein each of said wedge assemblies are separately biased to said respective latched positions. 14. The horizontal scaffold member according to claim 13 wherein each of said wedge assemblies further comprises a spring member that biases each respective said wedge assembly to a latched position. 15. The horizontal scaffold member according to claim 13 wherein said wedge head assemblies are pivotable in said wedge head. 16. The horizontal scaffold member according to claim 13 where the engagement portion comprises a tooth or projecting member. 17. The horizontal member of claim 16 wherein said tooth or projecting member is configured to engage with openings in said rosette annular member. 18. The horizontal scaffold member according to claim 12 further comprising a rotatable member mounted in said primary wedge head and said cable sliding on said rotatable member when said primary wedge head assembly is moved from a latched to unlatched position. 19. The horizontal scaffold member according to claim 12 wherein said cable is attached to said secondary wedge head assembly at said wedge of said secondary wedge head assembly, and wherein said cable is attached to said primary wedge head assembly at said handle of said primary wedge head assembly. 20. The horizontal scaffold member according to claim 12 wherein primary handle is shaped different from said secondary handle, to allow an operator to distinguish between the primary and secondary handles. 21. The horizontal scaffold member of claim 12 wherein said cable is a wire rope.
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