| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 280104000 | Equalized frame | 19 |
| 20100301576 | WHEELCHAIR BASE - A wheelchair base including a base frame and a pair of pivot arm assemblies each including a first pivot arm and a second pivot arm, pivotally coupled to each other for pivotal movement about a transverse pivot axis. The pivot arms defining first and second auxiliary wheel attachments opposed to the transverse pivot axis for attaching first and second end auxiliary wheels. Each pivot arm assembly including a link pivotally coupled to the second pivot arm intermediate the transverse pivot axis and the second auxiliary wheel attachment for pivotal movement about a link axis substantially parallel to the transverse pivot axis forming a drive wheel attachment intermediate the auxiliary wheel attachments. The pivot arm assemblies are mounted to the base frame substantially laterally opposed to each other through the link and first pivot arm such that the pivot arm assemblies are independently pivotable relative to the base frame. | 12-02-2010 |
| 20120211957 | Triple Axle With Rubber Torsion Mechanism - A preferred embodiment of the present invention includes a triple torsion axle system and kit with various features to help reduce or prevent damage that otherwise may occur with large loads. For example, each axle assembly includes larger diameter caps on the ends of each torsion bar to prevent the bar from pulling out of its outer tube during high side loads. In another example, the outer end of the torsion bar has a rounded surface that is fixed to a swing arm so as to better equalize the stress around the weld joint. Additionally, the triple torsion axle is configured such that when the vehicle is unloaded, the middle axle assembly supports more weight than the two adjacent axle assemblies. However, when the vehicle is loaded, all three axle assemblies provide similar support to the vehicle. | 08-23-2012 |
| 20150343869 | TRUNNION SUSPENSION STRUCTURE - A trunnion bracket | 12-03-2015 |
| 280676000 | Tandem axles | 16 |
| 20100007118 | Tandem wheel arrangement - A machine ( | 01-14-2010 |
| 20120018983 | INDEPENDENT HYDRAULIC SERVO DRIVE STEERING FOR BETWEEN-THE-DUALS DIRECT DRIVE EQUALIZING BEAM SUSPENSION - A tandem axle (TA) has identical right and left halves, each having a walking beam ( | 01-26-2012 |
| 20120018984 | INDEPENDENT DUAL WHEEL DIRECT DRIVE AXLES, BETWEEN THE DUALS GEAR BOX, AND INDEPENDENT SERVO DRIVE STEERING FOR BETWEEN THE DUAL DIRECT DRIVE SUSPENSIONS - A rear dual wheel direct drive axle assembly ( | 01-26-2012 |
| 20140159349 | CENTRAL HANGER BRACKETS AND EQUALIZERS FOR TANDEM SUSPENSION - This invention relates to central hanger brackets and equalizers for tandem suspension, used in trucks, trailers and semi-trailers, provided with spring pack arranged on the axles of the vehicle comprising an equalizer, provided with an intermediate area located in the upper part of the body, said area coupling to a surface arranged in the central hanger bracket. The set promotes a structural arrangement that allows the articulation of said equalizer, and eliminates the use of fixing pins, bushings or screws to attach said set to said central hanger bracket, in order to simplify the system and reduce the number of components, providing better conditions for the durability and maintenance of the suspension and thus reducing the operating cost and the cost of the product itself. | 06-12-2014 |
| 280677000 | With walking beam | 3 |
| 20090085328 | WALKING BEAM SYSTEM FOR A SCRAPING DEVICE - An earthmoving scraping device has a bowl-shaped frame with walls and a frame floor that define an interior for transporting material and a walking beam system for the rear wheels thereof that includes a suspension arm pivotally connected between the back end of the frame and a beam, the beam having first and second axles disposed in parallel orientation on separate sides of the beam. The scraping device may have two walking beams independently connected to the rear end of the frame, each having a cylinder connecting the back of the frame and the suspension arm. The first axles of the beam may extend outward to position the outer tires closest to the frame, the inner axles and associated tires being positioned furthest from the frame between the two walking beams. | 04-02-2009 |
| 20160089942 | Vehicle Suspension - A vehicle suspension having a frame attachment portion attached to a saddle, first and second bolster springs mounted to spring mounts on an outboard side of the saddle and mounted on walls of a spring mount on an outboard side of an equalizing beam, and third and fourth bolster springs mounted to walls of a spring mount on an inboard side of the saddle and mounted to spring mounts on an inboard side of the equalizing beam, wherein upwardly extending flanges on the bottom of the first and second bolster sprints are mounted to each other using a common fastener, and wherein upwardly extending flanges on the bottom of the third and fourth bolster springs are mounted to each other with a common fastener. | 03-31-2016 |
| 280678000 | With fluid-type suspension | 1 |
| 20090033068 | WALKING BEAM SUSPENSION - The invention relates to a vehicle suspension system. There is a need for a stable walking beam suspension system where the beam can oscillate and move vertically. Such a suspension system includes a support fixed to the vehicle frame and having first and second ends. A swing arm has a first end pivotally coupled to the first end of the support via a pair of spaced apart pivot pins. Air bags are coupled between the frame and the second end of the swing arm. A walking beam has opposite ends coupled to left and right wheel support assemblies. The walking beam is pivotally coupled to the swing arm. A damping cylinder is coupled between the frame and the second end of the swing arm. Resilient bumper members are engagable with the walking beam and are mounted on an end of the swing arm and fixed to an end of the support. | 02-05-2009 |
| 280682000 | With rocker | 3 |
| 20090250907 | VEHICLE SUSPENSION LEVELLING CONTROL - A front wheel suspension system is arranged to support a vehicle chassis suspended for movement relative to its wheels. The suspension system includes a double leaf spring arrangement on each side of the chassis. A first leaf spring connection arrangement pivotably connects each leaf spring to the chassis at a first end. A second leaf spring connection arrangement is connected to each leaf spring at its opposite, second end by a linkage arrangement which is carried on a pivot pin pivotably attached to a first arm of a lever that is supported by a pivotal connection on the vehicle chassis. A length adjustable unit is mounted on each side of the chassis, and each length adjustable unit being operatively connected to a second arm of the lever for each leaf spring, wherein each length adjustable unit is arranged to effect a substantially vertical displacement of the second end of each leaf spring relative to the chassis. | 10-08-2009 |
| 20100072733 | Vehicle conversion - Vehicle conversion; for example, a vehicle conversion kit to convert a vehicle from a first vehicular type into a second, different, vehicular type. The vehicle conversion kit includes: an intermediary sub-chassis unit adapted for attachment to a chassis of the vehicle; a first tandem suspension adapted to pivotally connect to a right side of the intermediary sub-chassis unit; and a second tandem suspension adapted to pivotally connect to a left side of the intermediary sub-chassis unit, wherein the first and second tandem suspensions comprise first and second ground directing units, respectively; and wherein each one of the first and second tandem suspensions is adapted for suspension from the intermediary sub-chassis unit through a shock absorbing unit. | 03-25-2010 |
| 20100253046 | Equalizer for a Suspension System - An equalizer for a suspension system for a trailer is configured to absorb or dampen the harsh shocks or vibrations coming off of the leaf springs proximate to a center frame hangar, thus allowing for a “softer” ride. The equalizer utilizes one or two independent equalizer arm assemblies or castings which are each rotatably secured within the equalizer. Each equalizer arm assembly or casting is operatively associated with one of the leaf springs such that upon upward movement of the leaf spring, the associated equalizer arm assembly or casting is forced to rotate within the equalizer and to deform a shock absorber provided within the equalizer. The shock absorber, upon the deformation thereof, absorbs the harsh shocks or vibrations which would otherwise normally be transferred from the leaf springs, to the equalizer, and thus to the frame of the trailer. | 10-07-2010 |
| 280683000 | With fluid-type suspension | 3 |
| 20100102537 | System and method for load balancing in a tandem wheel arrangement - A tandem drive arrangement includes one or more independently driven wheels ( | 04-29-2010 |
| 20120112437 | SUSPENSION FOR A VEHICLE - A suspension system for a vehicle chassis includes a pair of trailing arms, a pair of air springs and a guiding assembly for preventing lateral loads from being transferred to the air springs. Each trailing arm is pivotally mounted to the vehicle chassis so as to permit an arcuate movement of the vehicle axle. A first lateral surface faces in a first lateral direction and a second lateral surface faces in an opposite second lateral direction. The guiding assembly includes a first guide element mounted beneath the vehicle chassis which extends proximate the first lateral surface so as to block lateral movement thereof in the first lateral direction. The guiding assembly further includes a second guide element mounted beneath the vehicle chassis and which extends proximate the second lateral surface so as to block lateral movement thereof in the second lateral direction. The suspension system can be adapted to a tandem suspension. | 05-10-2012 |
| 20130264801 | AIR ASSIST SUSPENSION - Representative implementations of devices and techniques provide an air assist suspension, for use in a wide range of vehicles and implements having multiple axles (such as agricultural equipment). The air assist suspension uses one or more air bags (e.g., fluid-filled bladders, containers, pistons, and the like) to assist in adjusting the loading of the implement with respect to the multiple axles. In one embodiment, the air assist suspension also uses one or more rocker assemblies, coupled to the air bag(s) and coupled to the axles. | 10-10-2013 |
| 280684000 | With torsion-type suspension | 1 |
| 20130161927 | DEVICE FOR DAMPING THE VIBRATIONS IN A CRAWLER OR TRACKED VEHICLE - A device for damping vibrations acting on a tracked vehicle is provided, which has a front and rear track roller. Torsion springs are mounted along a vehicle pan. Alternatively, the torsion springs can be subdivided into smaller torsion springs. For the immediate track rollers, a further device is provided in which the long torsion springs which hitherto absorbed the torsion are divided into a plurality of smaller torsion springs and mounted not transversely with respect to the vehicle pan, but in a direction of travel with respect thereto. The torsion springs are functionally connected to one another via drive and/or transmission elements, and are accommodated outside an interior space. In this way, no further installation space is required transversely with respect to and below the vehicle pan, at most in the side region or within a small recess in the pan, a so-called pan niche. | 06-27-2013 |
| 280686000 | With leaf-type suspension | 2 |
| 20110095511 | TANDEM SUSPENSION FOR A VEHICLE - A pivot assembly for a tandem suspension is provided which includes a balancer and an elastomeric assembly operable to allow the balancer to rotate about a vehicle chassis. In addition, an elastomeric assembly for a suspension system is provided which includes an elastomeric element provided with a slot for allowing a deformation in response to a tension load imparted by a balancer, and a groove for preventing bulging in response to a compression load imparted by the balancer. A balancer for a vehicle suspension is also provided which includes first and second plates, an open area formed between the plates, an engaging member provided within the open area and first and second pins which define an axis of rotation about which the balancer is rotatable. A kit for the pivot assembly is also provided. | 04-28-2011 |
| 20110127753 | LEAF SPRING ASSEMBLY AND TANDEM SUSPENSION SYSTEM - A leaf spring assembly and a tandem suspension system of a vehicle includes a number of leaf springs secured together so as to form a central seat adapted to be mounted to a chassis of the vehicle. The leaf spring assembly also includes a first end portion adapted to be mounted to a first axle of the vehicle and a second end portion adapted to be mounted to a second axle of the vehicle. Each leaf spring features a central arcuate section and a pair of end sections, where a thickness of the leaf spring is at a maximum in the central arcuate section and tapers down in thickness towards the pair of end sections so that a constant stress results in the material of the leaf spring when the leaf spring assembly is used in the suspension system. | 06-02-2011 |
