Lying type of jack structure

Details Lying type of jack structure Lying type of jack structure

1986-07-07

1988-05-10

Schmidt, Frederick R.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Single throw lever

B66F 504

Patent

active

047429917

ABSTRACT:
A jack structure, particularly an improved lying type of jack structure, has the front end of the hydraulic cylinder of the jack fixed in place with an arch-shaped plate. When the extension rod of the hydraulic cylinder is driven, the pulling rods raise the lifting arm, and the extension rod generates downward and upward components of force. By means of the arch-shaped plate and a holding member on the tail portion of the cylinder, the joint parts on the front and rear ends of the hydraulic cylinder are not pulled apart to become disengaged by the one-way stress which would cause a leak.

REFERENCES:
patent: 2674851 (1954-04-01), Wooley
patent: 3181836 (1965-05-01), Arnes et al.
patent: 3807694 (1974-04-01), Butorac
patent: 4210314 (1980-07-01), Carroll et al.

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