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US 5,203,746 AGranted
Telescoping mast assembly
AssigneeThe Will-Burt Company
InventorHeidi E. Lehnert
Life of this patent
Estimating the term…
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AssigneeThe Will-Burt Company
InventorHeidi E. Lehnert
Estimating the term…
Link-type chain assemblies are disclosed comprising alternating, laterally spaced pairs of inner and outer link plates having overlapping ends pivotally interconnected by rollers between the inner link plates at the overlapping ends. Mounting flanges extend axially outwardly from each of the inner and outer link plates, and plate members are mounted on the mounting plates to maintain the roller axes generally coplanar and to preclude pivotal displacement of adjacent pairs of inner and outer link plates about the roller axes in at least one direction. In one chain assembly, the plate members mounted on the mounting flanges span adjacent pairs of inner and outer link plates to preclude pivotal displacement of the spanned pair of link plates in opposite directions about the roller axis therebetween. In another chain assembly, individual plate members are mounted on the mounting flanges of adjacent ones of the inner and outer link plates and have adjacent planar surfaces which engage to preclude pivotal displacement of the adjacent pair of inner and outer link plates in just one direction.
A chain assembly comprising a plurality of inner and outer link plates, each said inner and outer link plate having opposite ends and spaced apart opposite edges between said ends, said inner and outer link plates being in alternating laterally spaced pairs with the ends of adjacent pairs of inner and outer link plates overlapping and pivotally interconnected by roller means laterally between said inner link plates at said overlapping ends, said roller means providing roller axes transverse to said inner and outer link plates about which adjacent pairs of said inner and outer link plates are pivotal in opposite directions, said inner and outer link plates each having a mounting flange on a corresponding one of said opposite edges and extending axially outwardly from said one edge with respect to said roller axes, and means mounted on said mounting flanges of adjacent pairs of said inner and outer link plates to maintain said roller axes generally coplanar and preclude pivotal displacement of said adjacent pairs of inner and outer link plates about said roller axes in at least one of said opposite directions.
Dependencies are inferred from the claim text.