Deflection constraint device for telescopic uprights

Details Deflection constraint device for telescopic uprights Deflection constraint device for telescopic uprights

1977-12-23

1979-05-22

Reeves, Robert B.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 9E, 414670, B66B 702, B66F 906

Patent

active

041554280

ABSTRACT:
A system for reducing the lateral bending moments and deflection in side loading telescopic uprights, such as for lift trucks. Hydraulic actuated restraint device is mounted between each adjacent pair of upright rails, as well as between the inner rails and fork carriage in a lift truck. The restraint device is energized under controlled conditions, such as when a load on a fork carriage is extended to one side of the upright, to lock together each adjacent pair of upright rails and the fork carriage so as to form a rigid column of each side of the upright.

REFERENCES:
patent: 3221840 (1965-12-01), Weinert
patent: 4015686 (1977-04-01), Bushnell, Jr.

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