Conveyor shock absorber

Details Conveyor shock absorber Conveyor shock absorber

2005-01-25

2005-01-25

Le, Mark T. (Department: 3617)

Railways

Traction

Chain

C213S03200A, C213S03200A, C213S037000, C213S038000

Reexamination Certificate

active

06845720

ABSTRACT:
A shock absorbing tow bar for connecting between a drive trolley and a load carrying trolley of a conveyor system. The tow bar includes a pair of tubes that reciprocate relative to each other. A plunger is located within a first of the tubes and attached to a second tube. Mounted on the plunger are a pair of brake surfaces that frictionally engage the first tube. The brake surfaces are biased toward the first tube by springs and the force applied to the brake surfaces is adjustable through an adjustment mechanism including a pair of wedges upon which the springs are located. An adjustment rod is joined with the adjustment mechanism and extends outwardly from the tow bar to allow an operator to adjust the friction produced by the brake surfaces without disassembly of the tow bar.

REFERENCES:
patent: 2615535 (1952-10-01), Snyder
patent: 2646860 (1953-07-01), Pirard
patent: 3870128 (1975-03-01), Nicolay et al.
patent: 5027715 (1991-07-01), Moore et al.
patent: 5067414 (1991-11-01), Moore et al.
patent: 5632206 (1997-05-01), Summa et al.
patent: 6244451 (2001-06-01), Summa et al.
patent: 6330952 (2001-12-01), Summa et al.
patent: 6330953 (2001-12-01), Summa et al.

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