Double flexing chain

Details Double flexing chain Double flexing chain

1977-07-18

1979-04-24

Scott, Samuel

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

74250R, 74250C, 74251R, 74251C, F16G 1306, F16G 1308

Patent

active

041505840

ABSTRACT:
A block and bar chain of the trolley conveyor type includes a center link having U-shaped bushing inserts at the ends of the link. The inserts with the center link are respectively turnable on the pins; the center link is pivotable on either insert about a separate axis normal to that of the pins. The improved double flexure of the chain reduces the stress in the chain parts comprising the joint and in turn allows the center link and the inserts in particular to be of a molded plastic construction of the required configuration. The inserts have pivot and retaining means and their plastic construction permits their "snap-in" assembly.

REFERENCES:
patent: 1660354 (1928-02-01), Phelps
patent: 1748334 (1930-02-01), Evans
patent: 1825675 (1931-10-01), Morse
patent: 1866318 (1932-07-01), Muhlenbruch
patent: 2004321 (1935-06-01), Hay
patent: 2332408 (1943-10-01), Stenger
patent: 2612056 (1952-09-01), Prox, Jr. et al.
patent: 2638009 (1953-05-01), Beveridge
patent: 2816453 (1957-12-01), Frank et al.
patent: 3056308 (1962-10-01), Burrows

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