Abstract: A support foot (100) comprising: a first body (105), a second body (110) slidingly coupled to the first body (105) along a predetermined sliding direction (A), an actuator device (150) adapted to actuate the second body (110) to slide with respect to the first body (105) along said sliding direction (A) between a retracted position and an advanced position, a third body (115) hinged to the first body (105) according to a hinging axis (B) orthogonal to the sliding direction (A) of the second body (110), and an actuation apparatus adapted to actuate the first body (105) to rotate with respect to the third body (115) around said hinging axis (B) between an active configuration and an inactive configuration, wherein said actuation apparatus comprises a mechanism adapted to transform a sliding of the second body (110) from the advanced position towards the retracted position into a corresponding rotation of the first body (105) from the active configuration to the inactive configuration.

Abstract: A jack (1), which is extensible, comprising: a first tubular body (5), a second tubular body (30) slidably associated with the first tubular body (5) and movable along a predetermined longitudinal direction (A), a third tubular body (95) slidably associated with the second tubular body (30) and movable along the longitudinal direction (A), a base (115) for support associated with an end (105) of the third tubular body (95) distal from the second tubular body (30), characterized in that it comprises an automatic safety device (145) provided with a lockbolt (150) movable between a first position, wherein it allows relative sliding between the third tubular body (95) and the second tubular body (30), and a second position wherein it prevents the third tubular body (95) from sliding relative to the second tubular body (30).

Abstract: A support apparatus is equipped with a support foot of hydraulic type that comprises: a cylinder equipped with a cavity axially shaped that has a longitudinal axis, a piston slidably received in a sealed manner in the cavity so as to divide said cavity into a first chamber and a second chamber, a stem provided with a first end fixedly connected to the piston and a second end that protrudes from the cylinder, a base fixed to the second end of the stem, and an actuation group of the support foot configured to selectively send a pressurised work fluid to the first chamber or to the second chamber so as to change the relative position of the base with respect to the cylinder.

Abstract: An extensible support foot (10) includes a first body (20) equipped with a support base (21), a second body (30) slidingly associated with the first body (20) and movable along a predetermined longitudinal direction towards or away from the support base (21), and means (40) for adjusting the distance between the second body (30) and the support base (21), the support foot (10) includes a weighing device (50) adapted for measuring a force acting on the second body (30) in the longitudinal direction (A).

Abstract: An extensible support leg includes at least two reciprocally-slidable portions, a maneuvering screw axially constrained to a first portion, a threaded volute axially constrained to a second portion and screwed on the maneuvering screw, and a rotating drive shaft which is connected to the maneuvering screw by a mechanical gear change, and is rotatable to set the maneuvering screw in rotation. The mechanical gear change includes: two first cogged crown wheels, coaxial and rotatably solid with the maneuvering screw; two second cogged crown wheels mounted coaxially and rotatably idle on the drive shaft, which enmesh directly with a respective first cogged crown wheel, realizing two gears having different transmission ratios; and a cursor, which is solidly rotatably associated to a portion of the drive shaft between the second cogged crown wheels, and is mobile, in a direction of the drive shaft axis, between first and second enmeshed positions.

Abstract: An extensible support leg includes at least two reciprocally-slidable portions, a maneuvering screw axially constrained to a first portion, a threaded volute axially constrained to a second portion and screwed on the maneuvering screw, and a rotating drive shaft which is connected to the maneuvering screw by a mechanical gear change, and is rotatable to set the maneuvering screw in rotation. The mechanical gear change includes: two first cogged crown wheels, coaxial and rotatably solid with the maneuvering screw; two second cogged crown wheels mounted coaxially and rotatably idle on the drive shaft, which enmesh directly with a respective first cogged crown wheel, realizing two gears having different transmission ratios; and a cursor, which is solidly rotatably associated to a portion of the drive shaft between the second cogged crown wheels, and is mobile, in a direction of the drive shaft axis, between first and second enmeshed positions.