Hydraulic floor jack
OwnerFirmin Coulombeinventor
Life of this patent
Estimating the term…
Abstract
An hydraulic floor jack of the type which rolls on the floor to engage under a vehicle to lift it. This jack is characterized by an articulated frame to operatively and selectively use less floor space, flexible tire wheels to allow the load on the jack to be transmitted directly to the floor by the base of the jack upon flexing of the flexible tires under the load until the best rests on the floor, and by a narrow construction and arrangement of the operative parts to allow engagement in narrow spaces and in particular between the tandem wheels of a truck.
Claims6
A hydraulic floor jack comprising an articulated frame including a front and a rear frame sections hinged one to the other, flexible tire wheel means attached to the front frame section and rollably supporting the same, a locking device connected to said frame and operatively locking the rear frame section in selected angular elevation relative to the front frame section, a rigid base fixed to said front frame section adjacent said flexible tire wheel means, and depending therefrom at a predetermined limited height for engagement with the ground upon flexing of any tire of the flexible tire wheel, an hydraulic cylinder secured upright on said base, an hydraulic fluid supply mounted on the frame, and a pump secured to the rear frame section, connected to the hydraulic fluid supply and to the hydraulic cylinder and selectively supplying hydraulic fluid under pressure to the hydraulic cylinder upon selective actuation thereof.
Dependencies are inferred from the claim text.