Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
210 words
Exercising apparatus comprising a frame, a handle assembly arranged to be grasped by a user and connected to the frame so that it can be moved upwards and downwards by the user, in which a hydraulic piston and cylinder device is connected between the handle assembly and the frame so that on upward movement of the handle assembly a piston is moved in one direction in the cylinder whilst on downward movement of the handle assembly the piston is moved in the opposite direction, the cylinder is filled with hydraulic fluid and the piston has passage means through which fluid flows from one side of the piston to the other during movement of the piston, and in which the piston is provided with valve means operable to restrict the tctal cross-sectional area of the passage means when the piston moves in the said one direction, to increase the face required to lift the handles against the resistance of the fluid and to open fully the passage means when the piston moves in the opposite direction to reduce the force required to lower the handles, and adjusting means for adjusting the cross-sectional area of the passage means thereby to adjust the resistance of the fluid to upward movement of the handles.
Claim 2
Dependent Claim
210 words
Exercising apparatus comprising a frame, a handle assembly arranged to be grasped by a user and connected to the frame so that it can be moved upwards and downwards by the user, in which a hydraulic piston and cylinder device is connected between the handle assembly and the frame so that on upward movement of the handle assembly a piston is moved in one direction in the cylinder whilst on downward movement of the handle assembly the piston is moved in the opposite direction, the cylinder is filled with hydraulic fluid and the piston has passage means through which fluid flows from one side of the piston to the other during movement of the piston, and in which the piston is provided with valve means operable to restrict the tctal cross-sectional area of the passage means when the piston moves in the said one direction, to increase the face required to lift the handles against the resistance of the fluid and to open fully the passage means when the piston moves in the opposite direction to reduce the force required to lower the handles, and adjusting means for adjusting the cross-sectional area of the passage means thereby to adjust the resistance of the fluid to upward movement of the handles.
Claim 3
Dependent Claim
105 words
Exercising apparatus as chimed in claim 1, in which the piston comprises two parts rctatable relative to one another, one part of the piston having a plurality of holes of different cross-sectional areas arranged in a circle around the axis of the piston, all but one of the holes being closed by the valve means when the piston is moving in the said one direction, the selection of the hole which remains open being dependent on the relative angular orientation of the two parts of the piston, and the adjusting means is arranged to alter the relative orientation of the two parts of the piston.
Claim 4
Dependent Claim
64 words
Apparatus as claimed in claim 2, in which the valve means comprises an annular valve member movable axially in a cavity between the two parts of the piston, the valve member having a hole which is aligned with the selected one of said plurality of holes in one part of the piston, the valve member being rotatable with the other part of the piston.
Claim 5
Dependent Claim
44 words
Apparatus as claimed in claim 3, in which the said other part of the piston has a number of passages opening into the cavity between the two parts of the piston, and a guide pin extending through a second hole in the valve member.
Claim 6
Dependent Claim
84 words
Apparatus as claimed in claim 2, in which the means for altering the relative orientation of the two parts of the piston comprises interengaging elements on one part of the piston and on the cylinder, the elements engaging one another to hold the said one part of the piston against angular movement when the piston is in a predetermined position, and the other part of the piston being fixed to the piston rod so that it can be rotated by rotating the piston rod.
Claim 7
Dependent Claim
56 words
Apparatus as claimed in claim 2, in which spring catch means are provided to hold the two parts of the piston in each of a plurality of relative angular orientations, in each of which a respective one of the plurality of holes in the said part of the piston is left open by the valve means.
Claim 8
Dependent Claim
64 words
Apparatus as claimed in claim 1, in which the handle assembly is pivoted to the main frame and the piston and cylinder device is pivoted at its lower end to the frame and at its upper end to the handle assembly, and in which the connections to the frame of the piston and cylinder device and of the handle assembly are adjustable in position.
Claim 9
Dependent Claim
32 words
Apparatus as claimed in claim 7, in which the frame includes a base positioned below the handle assembly so that the user can stand on the base in use of the apparatus.
Claim 10
Dependent Claim
26 words
Apparatus as claimed in claim 7, in which the handle assembly and the piston and cylinder device are detachable from the frame for storage or transport.