Patent ID: 8434581

Claim:
A suspension device ( 1 ) for resiliently suspending a mass relative to a substructure ( 2 ), the suspension device ( 1 ) comprising: a spring/damper arrangement ( 4 , 5 ) disposed between the mass and the substructure ( 2 ) for damping at least one of impact and vibration, a Watt's linkage system having at least a first Watt's linkage (A, B, C, D, E) connecting the mass and the substructure ( 2 ) in a relatively displaceable manner, via a control arm ( 9 ) and first and second fixed length lateral struts ( 7 , 8 ), to reduce freedom of movement of the mass relative to the substructure ( 2 ), a central portion of the control arm ( 9 ) being pivotally secured with one of the mass and the substructure ( 2 ), the first fixed length lateral strut ( 7 ) interconnecting a first end of the control arm ( 9 ) with a first pivot point (A) which is connected to the other of the substructure ( 2 ) and the mass, the second fixed length lateral strut ( 8 ) interconnecting a second end of the control arm ( 9 ) with a second pivot point (E) which is connected to the other of the substructure ( 2 ) and the mass, and at least one of a plurality of pivot points (A, B, C, D, E, G) of the at least first Watt's linkage (A, B, C, D, E) being connected to at least one substantially linearly acting actuator ( 11 ) so as to be relatively displaceable with respect to at least one of the mass and the substructure ( 2 ) such that a relative position, between the at least one of the plurality of pivot points and either the mass or the substructure ( 2 ), is adjustable by actuation of the at least one substantially linearly acting actuator ( 11 ).