Pivot rod retention structure in modular conveyor belts

Details Pivot rod retention structure in modular conveyor belts Pivot rod retention structure in modular conveyor belts

1991-06-14

1992-04-21

Valenza, Joseph E.

Conveyors: power-driven

Conveyor section

Endless conveyor

198851, B65G 1706

Patent

active

051059380

ABSTRACT:
Pivot rods tend to move from a preferred resident working axial position in modular link conveyor belts because of load forces tending to flex the rods, movement of belts around curves and other conditions encountered. This invention provides for pivot rod receptacle apertures in modular link ends which are elongated and contain detenting structure for holding the pivot rod in a bistable position in either end of the elongated apertures. Thus, the edge of links or belts have only one of the ends of the apertures occluded so that rods may be inserted and removed in a slack non-working bistable position and then the rods are moved with a force overcoming the detent into a tension working bistable position where they are confined in their resident working position. A preferred detenting structure in resilient plastic belt modules comprises reduced width waist structure intermediate the two ends of the elongated apertures in one or more of the link ends. The elongated pivot rod receptacle apertures thus form a "figure 8"cross section configuration in plastic modules as detent structure which gives resiliently with manual force to permit the rod to be moved from one end of the elongated aperture to the other to reside in one of two bistable positions.

REFERENCES:
patent: 4858753 (1978-08-01), Hodlewsky
patent: 4951807 (1990-08-01), Roinestad et al.

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