Abstract: An extendable support system for supporting an object on a surface, the support system comprising a support structure comprising an inner post and an outer post arranged such that the relative longitudinal position of the inner post and the outer post effects a change in an overall length of the support structure to vary the height of the object above the surface; a guide assembly comprising one or more guides positioned between the inner post and the outer post, the guides being configured to maintain the lateral position of the inner post and the outer post with respect to one another while allowing longitudinal movement of the inner post and outer post with respect to one another along the length of the support structure.

Abstract: A hydraulic foot assembly for supporting an object on a surface, the foot assembly comprising a cylinder defining an interior reservoir, a piston dividing the reservoir into two chambers in fluid communication with one another, the piston moveable within the reservoir, the position of the piston within the reservoir effecting the overall length of the foot assembly, a valve arrangement configured to limit movement of the piston within the reservoir.

Abstract: A hydraulic foot assembly for supporting an object on a surface, the foot assembly comprising a cylinder defining an interior reservoir, a piston dividing the reservoir into two chambers in fluid communication with one another, the piston moveable within the reservoir, the position of the piston within the reservoir effecting the overall length of the foot assembly, a valve arrangement configured to limit movement of the piston within the reservoir.

Abstract: A hydraulic foot assembly for supporting an object on a surface, the foot assembly comprising a cylinder defining an interior reservoir, a piston dividing the reservoir into two chambers in fluid communication with one another, the piston moveable within the reservoir, the position of the piston within the reservoir effecting the overall length of the foot assembly, a valve arrangement configured to limit movement of the piston within the reservoir.

Abstract: A hydraulic foot assembly for supporting an object on a surface, the foot assembly comprising a cylinder defining an interior reservoir, a piston dividing the reservoir into two chambers in fluid communication with one another, the piston moveable within the reservoir, the position of the piston within the reservoir effecting the overall length of the foot assembly, a valve arrangement configured to limit movement of the piston within the reservoir.

Abstract: A support for supporting a structure on a surface, comprising at least one support element, each support element comprising a piston, a cylinder in which the piston is moveable, and a brake for maintaining the piston in a position that is stable relative to the cylinder, wherein the piston and the cylinder are arranged so that a loading associated with the structure effects an adjustment of the support element, and wherein an increase in hydraulic pressure within the cylinder, effected by the loading associated with the structure, activates the brake.

Abstract: A support for supporting a structure on a surface, comprising at least one support element, each support element comprising a piston, a cylinder in which the piston is moveable, and a brake for maintaining the piston in a position that is stable relative to the cylinder, wherein the piston and the cylinder are arranged so that a loading associated with the structure effects an adjustment of the support element, and wherein an increase in hydraulic pressure within the cylinder, effected by the loading associated with the structure, activates the brake.

Abstract: A support for supporting a structure on a surface, comprising at least one support element, each support element comprising a piston, a cylinder in which the piston is moveable, and a brake for maintaining the piston in a position that is stable relative to the cylinder, wherein the piston and the cylinder are arranged so that a loading associated with the structure effects an adjustment of the support element, and wherein an increase in hydraulic pressure within the cylinder, effected by the loading associated with the structure, activates the brake.

Abstract: A support for supporting a structure on a surface, comprising at least one support element, each support element comprising a piston, a cylinder in which the piston is moveable, and a brake for maintaining the piston in a position that is stable relative to the cylinder, wherein the piston and the cylinder are arranged so that a loading associated with the structure effects an adjustment of the support element, and wherein an increase in hydraulic pressure within the cylinder, effected by the loading associated with the structure, activates the brake.

Abstract: A support for supporting a structure on a surface, comprising at least one support element, each support element comprising a piston, a cylinder in which the piston is moveable, and a braking means for maintaining the piston in a position that is stable relative to the cylinder, wherein the piston and the cylinder are arranged so that a loading associated with the structure effects an adjustment of the support element, and wherein an increase in hydraulic pressure within the cylinder, effected by the loading associated with the structure, activates the braking means.