A vibration isolator with an adjustable response. A vibration isolator for isolating a vibration source from a support structure include a base in engagement with the support structure and two supports connected to the base. At least one of the supports is slidably connected to the base. A flexible member having a generally elongate shape and an elongate length is supported by the two supports. The flexible member is attachable to the vibration source. Each support slidably engages the flexible member such that the flexible member can move relative to each support with the support that is slidably connected to the base being moveable along the elongate length of the flexible member.

A vibration isolator with an adjustable response. A vibration isolator for isolating a vibration source from a support structure include a base in engagement with the support structure and two supports connected to the base. At least one of the supports is slidably connected to the base. A flexible member having a generally elongate shape and an elongate length is supported by the two supports. The flexible member is attachable to the vibration source. Each support slidably engages the flexible member such that the flexible member can move relative to each support with the support that is slidably connected to the base being moveable along the elongate length of the flexible member.

Hydraulically-damped mounting, especially for supporting the engine of a motor vehicle, comprises a support spring (10) made of an elastically deformable material and supporting a mounting core (13) removably connected to a support arm (30), a working chamber (11) defined by the support spring and filled with a hydraulic fluid, and an equalization chamber (20) connected to the working chamber by an overflow channel (36) integrated in the support arm. Preferred Features: The mounting core has a passage (14) receiving the support arm.

A device (1) for the application and/or for the removal of elements for the connection of a rail to a railway track sleeper, comprising at least one lever (2, 3) mounted on a frame (4) in a rotatable manner around an axis of rotation (5, 6), and equipped with at least one pressure organ (7, 8) adapted to engaging the connecting element, and at least one cylinder-piston group (9) adapted to driving the lever (2, 3) in order to assemble or disassemble the connecting element. The cylinder-piston group (9) comprises a cylinder body (10) and a sliding piston (11) housed within the cylinder body (10) and moveable with respect to the cylinder body (10) under the action of pressurised fluid. At least one first (12, 14) and second (13, 15) stop surfaces interact in such a manner as to form a stop device (16, 17) for stopping the lever (2, 3) in a defined position with respect to the frame (4), wherein the stop surfaces are formed, the one (12, 14) on the piston (11) and the other (13, 15) on the cylinder body (10) of said cylinder-piston group (9).

Catch system for a gradual bi-directional elevator safety device based on the use of a roller together with hinged rectangular frames on which a friction element is placed, thereby preventing to mark the guiderails during the braking, its operation being such that initially the displacement of the roller produces the braking action on the guide and the catching of the rectangular frame, while subsequently said frame brakes the guiderail, without the participation of the roller (9) and with the aid of fixed brake shoes placed opposite the hinged rectangular frames.

A crusher comprises a main shaft a portion of which is disposed in a bore of a rotatable eccentric shaft, the main shaft (1) having a central axis that is inclined with respect to the axis of rotation of the eccentric shaft, and a first crushing head attached to the main shaft and rotatable by the main shaft with respect to a second crushing head so that constrained stroke motion is effected between the first crushing head and the second crushing head. The inclination of the central axis of the main shaft is changed with respect to the axis of rotation of the eccentric shaft by a gear transmission comprising cog wheels, such that the magnitude of the constrained stroke motion changes.

A conveying device ( 1 ) which is particular in that the conveying device comprises a plurality of conveying elements ( 2 ), where each conveying element ( 2 ) comprises a chain box element ( 4 ) in which at least one transport roller ( 3 ) is rotatably fixed such that rollers ( 3 ) arranged in adjacent conveying elements ( 2 ) define the conveying device transport plane, and that chain box elements ( 4 ) of adjacent conveying elements are interconnected in such a way that one conveying element may articulate in relation to adjacent conveying elements, and that at least some of the chain box elements in the conveying device comprise drive elements directly engaging and rotating the transport rollers ( 3 ).

A method for generating pulse width modulated control signal has the steps of providing a base carrier waveform, segmenting the base carrier waveform into a plurality of carrier waveforms, and providing at least one modulating signal. The first and second waveforms are compared to the at least one modulating signal to produce first and second comparator outputs, which are then mathematically combined to produce a pulse width modulated control signal.

A method for generating pulse width modulated control signal has the steps of providing a base carrier waveform, segmenting the base carrier waveform into a plurality of carrier waveforms, and providing at least one modulating signal. The first and second waveforms are compared to the at least one modulating signal to produce first and second comparator outputs, which are then mathematically combined to produce a pulse width modulated control signal.

The invention relates to a gearbox control device comprising an input clutch which is controlled by a clutch release fork (30) and at least two shift actuators (200, 100) which each control two forward gear shifts. The invention is characterised in that the clutch release fork control shaft (50) can be moved by one of the aforementioned actuators.