Booster arm for high-lift mechanism

Details Booster arm for high-lift mechanism Booster arm for high-lift mechanism

1992-02-21

1993-06-29

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Lazy tongs

B66F 322

Patent

active

052227170

ABSTRACT:
A booster link arm positioning device for position or from a top to bottom position. The link arm is maintained by spring tension in the proper positions by the use of two torsion springs during first and second stage operations. In the second stage the link arm is disengaged from the hydraulic cylinder rollers and is maintained in a vertical position by a blocking bar. Upon lowering the upper frame to its bottom position, the link arm and yoke will re-engage with the hydraulic cylinder rollers at the proper location.

REFERENCES:
patent: 2501001 (1950-03-01), Neely
patent: 3891108 (1975-06-01), Traficant

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