Patent ID: 9670040
Date: 2017-06-06
CPC Classifications: B66F

Claim:
1. Bottle jack comprising a main body and a shaft expanding or contracting with respect to the main body for lifting and lowering a load, where the shaft expands due to pressure exerted by a hydraulic fluid contained in a hydraulically operated circuit that comprises: a passage space communicating the hydraulically operated circuit with an unloading circuit through which the controlled outlet of hydraulic fluid from the hydraulically operated circuit and subsequent lowering of the shaft can occur; a closure element located in the hydraulically operated circuit and elastically pushed towards the passage space to close said passage space and preventing the controlled outlet of hydraulic fluid through the passage space; a ram assembly provided with an outer end, outside the unloading circuit, and an inner end, inside the unloading circuit, said ram assembly being movable with respect to the passage space in a longitudinal forward movement direction (A) towards the passage space and in a longitudinal backward movement direction (B) opposite the longitudinal forward movement direction (A), where the inner end of the ram assembly pushes the closure element and separates said closure element from the passage space when the outer end is pushed, moving the ram assembly a sufficient distance in the longitudinal forward movement direction (A); where the bottle jack is characterized in that: the ram assembly is elastically pushed in the longitudinal backward movement direction (B) with a force greater than the force with which the closure element is elastically pushed against the passage space, and the user can operate the outer end from outside the main body in the longitudinal forward movement direction (A); and in that the bottle jack further comprises: an L-shaped part arranged in an inverted manner against a base of the main body, where said L-shaped part comprises an upper segment and a side segment and is capable of rotating with respect to said base according to a rotating shaft, where the side segment pushes the outer end of the ram assembly when the L-shaped part is rotated towards the inner end; a lever assembly which can be lowered by a user to operate the hydraulically operated system, where said lever assembly is telescopic such that the total length of the lever assembly is variable; an articulated receiver to which the lever assembly is connected, the articulated receiver providing the lever assembly with a rotating connection with respect to the main body, and wherein the lever assembly can be disassembled from the articulated receiver; and at least one fixing element for fixing the lever assembly, when it is disconnected from the articulated receiver, to an area of the main body other than the articulated receiver, wherein the fixing element fixes the lever assembly, when it is disconnected from the articulated receiver, to an upper area of the bottle through which the shaft projects, wherein the upper area of the bottle comprises a neck with a ring rotatably arranged around the neck, and wherein the fixing element connects the lever assembly, when it is disconnected from the articulated receiver, to the ring.