초록 ▼

A universal, portable base for heavy equipment, such as pump jacks, has a substantially rectangular slab of reinforced concrete with three rails extending longitudinally from end-to-end thereof substantially equally spaced apart. Anchor slides fit over the rails and can be moved along the rails to a

A universal, portable base for heavy equipment, such as pump jacks, has a substantially rectangular slab of reinforced concrete with three rails extending longitudinally from end-to-end thereof substantially equally spaced apart. Anchor slides fit over the rails and can be moved along the rails to appropriate positions for receiving tie-down devices for securing heavy equipment to the base. The base includes networks of reinforcing steel bars extending longitudinally and transversally of the base intermediate its thickness with one network being secured to the longitudinal rails.

대표청구항 ▼

In combination, a universal, portable base comprising a substantially rectangular slab of reinforced concrete having three structural I-beams extending longitudinally from end-to-end thereof substantially equally spaced apart, with their upper flanges substantially flush with the upper surface of th

In combination, a universal, portable base comprising a substantially rectangular slab of reinforced concrete having three structural I-beams extending longitudinally from end-to-end thereof substantially equally spaced apart, with their upper flanges substantially flush with the upper surface of the slab and the lower portions of the webs embedded in the concrete, there being respective longitudinal smooth walled recesses, which recess walls are equidistant from one another extending from end-to-end of the slab and open at the ends within which the upper flanges and upper portions of the webs of the I-beams and the ends thereof are freely exposed as rails, said flange ends spaced essentially equidistant from said longitudinal recesses walls; anchor slide means for the reception and adjustable positioning along each said I-beam flange, in clearance with said longitudinal recess walls; means for providing said longitudinal recesses with smooth essentially equidistant walls; a pump jack mounted on said base; anchor slides at selected locations on one or more of said rails as required by the particular type of pump jack; structural tie-downs positioned for fastening the pump jack to said anchor slides; and externally threaded tie-down elements passed through said tie-downs and having their lower ends threaded into said anchor slides and nuts on their upper ends cinched down upon said tie downs.