A method of controlling operation of a linear actuator, including maintaining the linear actuator in equilibrium when supporting a first load, determining application of a second load on the linear actuator, and selectively actuating the linear actuator in response to application of the second load on the linear actuator.

A method of controlling operation of a linear actuator, including maintaining the linear actuator in equilibrium when supporting a first load, determining application of a second load on the linear actuator, and selectively actuating the linear actuator in response to application of the second load on the linear actuator.

A vehicle jacking assembly for raising a vehicle includes a plurality of cylinders, each of which is configured to couple to a frame of a vehicle proximate to a respective wheel of the vehicle. The cylinder comprises a plurality of nested sections so that the cylinder is selectively extensible. An actuator that is coupled to the vehicle is operationally coupled to the plurality of cylinders and an electrical circuit of the vehicle. The actuator is positioned to selectively actuate the plurality of cylinders to extend the cylinders from the frame of the vehicle so that the cylinders contact a surface. The plurality of cylinders thus is configured to raise the vehicle.

A telescopic column includes at least two telescopic elements movable with respect to one another between two end positions and at least one damper that is configured such that, prior to reaching at least one of the end positions, a force slowing the relative movement of the telescopic elements is exerted on at least one of the telescopic elements.

A telescopic column includes at least two telescopic elements movable with respect to one another between two end positions and at least one damper that is configured such that, prior to reaching at least one of the end positions, a force slowing the relative movement of the telescopic elements is exerted on at least one of the telescopic elements.

An automobile includes a plurality of frame-integrated hydraulic jacks includes a trunk mounted control panel in electrical communication with a power source and a plurality of jacks each being located beneath the automobile frame adjacent each wheel of the automobile. A plurality of flashing illumination is disposed upon the base of each jack and are in electrical communication with the control panel. The control panel permits a user to selectively raise or lower the automobile by the actuation of the plurality of jacks.

Pumping machine (650, 750) comprising: at least two tubular elements (651, 751) containing pressurized gas and extending vertically in parallel and interconnected between them by means of a connecting element (652, 752); andan electromechanical lifting system (600, 700) comprising a first cylinder (601, 701), interconnected to the tubular elements (651, 751) and comprising a substance compressible by a piston (601b, 701b); and a screw (602, 702) with a vertical axis Y coinciding with the axis of the pumping machine (650, 750). The screw (602, 702) is inserted inside a second thrust cylinder (658, 758), connected in sliding manner inside the first cylinder (601, 701), and has a first end (602b, 702b) fixed to the connecting element (652, 752) and a second end (602a, 702a) configured for sliding inside the thrust cylinder (658, 758) and overlying a chamber (605, 705) comprising lubrication and cooling oil overlying the piston (601b, 701b).

Pumping machine (650, 750) comprising: at least two tubular elements (651, 751) containing pressurized gas and extending vertically in parallel and interconnected between them by means of a connecting element (652, 752); andan electromechanical lifting system (600, 700) comprising a first cylinder (601, 701), interconnected to the tubular elements (651, 751) and comprising a substance compressible by a piston (601b, 701b); and a screw (602, 702) with a vertical axis Y coinciding with the axis of the pumping machine (650, 750). The screw (602, 702) is inserted inside a second thrust cylinder (658, 758), connected in sliding manner inside the first cylinder (601, 701), and has a first end (602b, 702b) fixed to the connecting element (652, 752) and a second end (602a, 702a) configured for sliding inside the thrust cylinder (658, 758) and overlying a chamber (605, 705) comprising lubrication and cooling oil overlying the piston (601b, 701b).

Electrical telescopic strut construction, movable between an extended locked position and a retracted unlocked position, comprising: an external cylinder (1); an inner cylinder (2); a screw (3) rotatable disposed within the inner cylinder (2); a drive (4) configured to rotate the screw (3); a nut (5) being movable with respect to the external cylinder (1) responsive to the rotation of the screw (3); at least one segment (6) located in a radial opening of the inner cylinder (2) and movable radially outward and inward in response to the movement of the nut (5) and configured to engage the external cylinder (1) when moved radially outward and not to engage the external cylinder (1) when moved radially inward, a second inner cylinder (7) located external to the first inner cylinder (2) and internal to the external cylinder (1).

Electrical telescopic strut construction, movable between an extended locked position and a retracted unlocked position, comprising: an external cylinder (1); an inner cylinder (2); a screw (3) rotatable disposed within the inner cylinder (2); a drive (4) configured to rotate the screw (3); a nut (5) being movable with respect to the external cylinder (1) responsive to the rotation of the screw (3); at least one segment (6) located in a radial opening of the inner cylinder (2) and movable radially outward and inward in response to the movement of the nut (5) and configured to engage the external cylinder (1) when moved radially outward and not to engage the external cylinder (1) when moved radially inward, a second inner cylinder (7) located external to the first inner cylinder (2) and internal to the external cylinder (1).