Patent Document ID: 10143877
Application ID: 15263359
Patent Flag: 1

Claim One:
1. An apparatus for duplicating climbing movement of a user, the apparatus comprising: two treads, a first tread and a second tread, each of the first tread and the second tread configured to move vertically to-and-fro from a reference plane; tread controls configured to the two treads, in that, a first tread control configured to the first tread, and a second tread control configured to the second tread, such that, the first tread control controls to-and-fro movement of the second tread, and the second tread control controls to-and-fro vertical movement of the first tread; two hydraulic cylinders with internal pistons, each of the two hydraulic cylinders configured to the respective treads to move vertically to-and-fro, the respective treads, from the reference plane; at least one control valve configured along the reference plain, the at least one control valve, at a closed position, restricts two of the hydraulic cylinders with internal pistons to restrict vertical to-and-fro movements of the first and second treads, and, at an open position, release the first and second tread controls to enable, upon the first tread control and the second tread control being activated, vertical to-and-fro movements of the first and second treads, wherein the first tread and the second tread are configured to move vertically to-and-fro from the reference plane, respectively, via the first tread control and the second tread control in a step lock control manner, and wherein the step lock manner is such that when the first tread remains locked in an upper-most position, the second tread moves to-and-fro vertically towards the lower-most position and back towards the upper-most position, and wherein when the second tread reaches the upper-most position, the second tread releases the first tread to move vertically to-and-fro towards the lower-most position and back towards the upper-most position, while the second tread remains locked in the upper-most position until the first tread reaches at the upper-most position.