Joints and connections – Distinct end coupler – Interrupted periphery – e.g. – split or segmental – etc.
Patent
1997-11-07
1999-04-20
Green, Brian K.
Joints and connections
Distinct end coupler
Interrupted periphery, e.g., split or segmental, etc.
403 79, 403306, 403161, 135150, 135151, 312 6, F16B 202
Patent
active
058951679
ABSTRACT:
A foldable rod assembly includes first and second rods of predetermined dimensions and having connecting ends with pivot holes, and a coupler unit for coupling pivotally the connecting ends. The coupler unit includes two elongate plates respectively having right and left longitudinal sides, upper and lower transverse sides, and upper and lower pivot holes disposed in symmetry to a middle line between the transverse sides. A blocking member extends transversely from the right longitudinal side proximate to the upper transverse side. Two protrusions extend from the left longitudinal side parallel to the blocking members respectively and proximate to the transverse sides. Two pins are inserted into the pivot holes of the elongate plates and the connecting ends of the first and second rods when the elongate plates are opposed to each other with a first transverse distance defined therebetween which is slightly larger than the predetermined dimension of the rods while one of the elongate plates is turned 180 degrees relative to the middle line so that the blocking members are located in a plane defined by the right longitudinal sides of the elongate plates at a diagonal position. The protrusions of the elongate plates define a second transverse distance which is smaller than the predetermined dimensions for sliding retention by the connecting ends when the latter are folded about the pin members.
REFERENCES:
patent: 1815142 (1931-07-01), Douglas et al.
patent: 1966561 (1934-07-01), Ratta, Jr.
patent: 4836485 (1989-06-01), Cooper
patent: 5638853 (1997-06-01), Tsai
Green Brian K.
Miller William L.
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