A suspension unit includes a lower frame and an upper frame vertically movably mounted on the lower frame via a link mechanism. The suspension unit also includes a magneto-spring unit for resiliently supporting the upper frame relative to the link mechanism. The amount of motion of the magneto-spring unit is smaller than that of the suspension unit, making it possible to provide a relatively compact suspension unit having a large stroke.

An improved rear suspension assembly is provided for snowmobiles, which includes a link assembly operatively connecting the rear suspension arm to a front cushion absorber so that the pivot movement of the rear suspension arm actuates the front shock absorber assembly. In one embodiment of the present invention, a rocker arm is pivotally attached to the slide frame assembly and has a front end thereof pivotally attached to the front shock absorber assembly, and has a rear end pivotally attached ...

The present invention has a plurality of pivoting linkages to lift and retract a front castor assembly to facilitate traversing an obstacle or rough terrain. In this regard, a wheelchair suspension having a frame member and at least one a pivoting assembly is provided. The pivoting assembly has, for example, a first linkage pivotally coupled to the frame member and a second linkage pivotally coupled to the frame member. At least one front caster assembly is coupled to the first and second linkag...

A suspension or staying system uses a length of wire or cable with a hook or plain bead secured to one end. The hook may be secured directly or indirectly to a structure. The other or free end of the wire or cable is extended through a jam cleat and around an object to be suspended or stayed, and then back through the jam cleat to form a tightenable, adjustable loop simply by pulling on the free end. The jam cleat uses swinging wire gripping levers accommodating a range of wire sizes driving the...

A suspension system for a tractor-drawn mower used for crops for agricultural purposes is made up of parallel links, connected at a first end to a frame and to a mowing unit at a second end. A torsion spring assembly, similar to that used for torsion axles, is used to bear a portion of the weight of the mowing unit when the mowing unit is in a lower, mowing position. All torsional stress is removed from the torsion spring when the mowing unit is in a transport position. During mowing, the weight...

A suspension system includes a shock absorber, a coil spring, a tubular dust cover, and an insulator. The shock absorber is provided with a first seat and a second seat at the opposite ends. The insulator is disposed between the first seat and the coil spring, and includes a body for holding the coil spring, and a contact projecting from the body in a centripetal direction and having a portion being brought into contact with one of the opposite ends of the dust cover. The insulator forms a space...

A suspension arm in which the accuracy of a bush supporting portion is improved. The suspension arm is formed by respectively welding both side portions of an upper plate member and both side portions of a lower plate member to each other, the upper plate member and the lower plate member each having a substantially U-shaped cross-sectional configuration. The bush supporting portion is formed in such a manner that an upper cylindrical portion and a lower cylindrical portion are respectively form...

A suspension package includes a frame and a hammock. The hammock is tensioned by tensioning panels at each end of the frame. The lower edges of the frame include bottom panels that are secured together at two opposing corners such that the bottom panels automatically move to a side wall bracing position when the frame is squared. The tensioning panel 42 is sufficiently long to overlap each of the side walls in order to apply a substantial portion of loads from the hammock directly to the side wa...

A suspension for positioning a floating read-write head assembly over selected tracks on the surface of a rotating data storage device. It includes a planar and resilient load beam having a proximal end portion that may be constructed for attachment to an actuator arm, a gimbal region located at a distal end portion constructed for supporting a read-write head assembly for gimballed motion relative to the surface of the data storage device, a spring region between the proximal end portion, and a...

A suspension strut comprises inner and outer tubes and incorporates an end closure constituted by a moulded plastic insert containing a sleeve bearing in the form of a metal bush, the insert being a press fit into the outer tube of the strut and the press fit region of the insert including a portion adapted to engage with and locate in a radial direction the inner tube of the strut, together with at least two circumferential ribs which extend radially from the insert to engage the inner surface ...