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| Number | Title | Issue Date |
| 7926836 | Elastomeric spring vehicle suspension An elastomeric spring suspension is described for supporting a longitudinally extending vehicle frame rail above first and second axles forming a tandem axle configuration. The suspension includes a frame hanger assembly mounted to the vehicle frame rail. The frame ... | 04/19/2011 |
| 7357595 | Pavement removal machine Portland Cement Concrete with steel reinforcement mats or rods used in airport runways, highways, and other objects need to have the cement broken up for recycling or disposal and the steel mat reused or the steel recycled. The pavement removal machine lifts the con... | 04/15/2008 |
| 7341272 | Expanding independent load suspension system An expanding independent load suspension system that incorporates a square walking beam, unique bushings, and multiple expanding sliding units to spread the load bearing tires evenly over the surface instead of grouping them close together. With the weight of the ve... | 03/11/2008 |
| 7320469 | Ride height control system for walking beam suspension A trailer suspension system includes first and second axles with a walking beam interconnecting the first and second axles. An intermediate portion of the walking beam provides a fulcrum for the first and second axles. Air bags are arranged on the first and second a... | 01/22/2008 |
| 7284764 | Sprayer strut suspension A chassis suspension for agricultural equipment, the chassis suspension comprising: an axle having a substantially upright journal adapted for upright axial constraint of an inner journal therein; an inner journal extending into the upright journal, the inner journa... | 10/23/2007 |
| 7281723 | Sprayer strut suspension A chassis suspension for agricultural equipment, the chassis suspension comprising: an axle having a substantially upright journal adapted for upright axial constraint of an inner journal therein; an inner journal extending into the upright journal, the inner journa... | 10/16/2007 |
| 7273118 | Electric wheelchair frame An electric wheelchair frame includes a seat brace, a pair of connection rods, a pair of front suspension brackets, a pair of rear suspension brackets, and a pair of resilient members. A front section of either side of the seat brace is pivotally connected to the fr... | 09/25/2007 |
| 7237631 | Vertical idler adjuster for track type work machine A work machine, and a work machine idler mounting assembly is provided, including a frame, a mounting member proximate an end of the frame, an idler support block adjacent the mounting member. At least one removeable spacer is positionable between the idler support ... | 07/03/2007 |
| 7234723 | Bolster spring suspension assembly A bolster spring assembly is adapted for securement to a vehicle having a primary suspension system for securing an axle to the vehicle. The bolster spring assembly is located and secured between the leaf spring over the axle and the undercarriage of the vehicle as ... | 06/26/2007 |
| 7229094 | Walking watts air beam A tandem axle suspension assembly includes a pair of walking beams disposed substantially parallel to a vehicle longitudinal axis supporting first and second axles. A link plate is pivotally attached to each of the walking beams and is pivotal about an axis transver... | 06/12/2007 |
| 7178824 | Walking beam trailer suspension slider A suspension is provided that comprises a tandem axle walking beam with a vertically compliant center pivot bushing and a spring medium located over each axle center. The walking beam is rigidly attached to the axles and is pivotally coupled to a frame of the vehicl... | 02/20/2007 |
| 7111850 | Wheeled vehicle provided with an oscillating axle and a pair of cylinders for blocking the axle A wheeled vehicle including a chassis; an axle coupled to the chassis to oscillate about a longitudinal axis parallel to a direction of advance of the vehicle; a pair of cylinders disposed between the axle and the chassis for blocking oscillation of the axle; and a ... | 09/26/2006 |
| 7104346 | Power wheelchair A mid-wheel drive power wheelchair for use by handicapped and disabled persons is provided having a frame, a seat supported by the frame, a pair of drive wheels supported on the frame under the seat, a motor for causing rotation of the drive wheels, a battery for su... | 09/12/2006 |
| 7017941 | Walking beam assembly A walking beam assembly includes a pair of axles in parallel spaced relation. At least one of the pair of axles being a drop axles having end portions and an intermediate portion that extends between the end portions. The intermediate portion drops down and has a se... | 03/28/2006 |
| 6951260 | Walking beam suspension for tracked vehicle A suspension for a tracked vehicle includes a bogie wheel assembly which has a pair of bogie wheels mounted to a walking beam. The walking beam is coupled to a body of the vehicle by a transversely-extending arm. The arm may be coupled to the body by a spherical bea... | 10/04/2005 |
| 6922881 | Method for installing and removing a continuous track drive unit The present invention is a system and method to install and remove continuous track drive units on vehicles, wherein the system contains two forcing discs connected hydraulically which mimic the shape of the vehicle end idlers. A hydraulically actuated telescopic se... | 08/02/2005 |
| 6916037 | Vehicle suspension A vehicle suspension system comprising a frame and a pair of levers carried by the frame. Each lever is pivotally mounted for swinging movement on an axis extending transverse to the frame. A pair of forward-extending beams and rearward-extending beams have pivot co... | 07/12/2005 |
| 6916038 | Vehicle suspension system A vehicle suspension system includes a pair of equalizing beams, two pairs of axle housings each having a lower portion connected to opposite ends of the equalizing beams, two pairs of linkage arms operably connected to an upper portion of each of the axle housings ... | 07/12/2005 |
| 6698478 | Mobile silvicultural apparatus and method for operating the same A mobile silvicultural apparatus for use in a land of trees comprising mature trees and immature trees. The apparatus includes a steerable wheeled support frame, an articulated boom, a motor system, and a control system. The steerable wheeled support fram... | 03/02/2004 |
| 6666474 | Semi-balanced tandem suspension A suspension system provides a pair of walking beams mounted parallel to a longitudinal main frame of a vehicle subframe. The walking beams support tandem axles. The walking beams are mounted to lower outboard brackets extending from each axle. A spherica... | 12/23/2003 |
| 6640915 | Vehicle A vehicle, which can be used in particular as an agricultural vehicle and/or for construction purposes, has a vehicle frame, a drive and an undercarriage. The undercarriage (4, 4a) includes on both sides wheels (12, 13) having tires, and/or chain wheels (... | 11/04/2003 |
| 6585286 | Vehicle suspension A vehicle suspension for connecting a vehicle frame rail to a first vehicle axle and for connecting the vehicle frame rail to a second vehicle axle includes a fabricated equalizing beam connected to the first and second vehicle axles, a split bolster spri... | 07/01/2003 |
| 6454294 | High clearance vehicle A high clearance vehicle includes a walking beam frame and an independent suspension. The frame consists of a main frame, A-shaped frames, a main truss, leg braces, and an axle. Pins which are used to join each A-shaped frame and leg braces to the main tr... | 09/24/2002 |
| 6264231 | Axle suspension connection In a tandem axle suspension a system for connecting the end of a rectangular axle housing to bushing in the eye at the adjacent end of a walking beam. The system comprises an axle bracket mounted on the bushing in the walking beam eye. The axle bracket ha... | 07/24/2001 |
| 6193266 | Vocational air ride tandem axle suspensions A vocational vehicle (i.e. truck or trailer intended for off-road operation) comprising a chassis mounted on a tandem axle suspension and having lateral stability in addition to roll and fore-and-aft stability. Roll and fore-and-aft stability are provided... | 02/27/2001 |
| 6179075 | Vehicle drive/suspension system The invention is directed to a vehicle drive/suspension system that has a chassis having a front and rear portion and a pair of sides. A drive axle has opposed end portions and extends between the sides. Each side has a pivotally mounted elongated rocker ... | 01/30/2001 |
| 6099013 | Spray cart A spray cart with pivoting suspension assemblies that include articulating trailing wheels with a hitch arrangement that can vary the amount of weight of the spray cart that can be transferred either to a towing vehicle or to an implement towed by the spr... | 08/08/2000 |
| 5655615 | Wheeled vehicle for distributing agricultural materials in fields having uneven terrain A vehicle adapted to traverse uneven terrain, comprising a chassis and a plurality of wheel assemblies. The wheel assemblies each comprise a forward wheel and a rear wheel mounted on a common support structure. The support structure is supported for free ... | 08/12/1997 |
| 5595397 | Method and apparatus for spreading a liquid slurry A trailer vehicle for distributing a fertilizing manure slurry to a field which includes a slurry distribution assembly mounted to the tear of the vehicle having four slurry distribution units, each with three plow teeth and a slurry distribution nozzle a... | 01/21/1997 |
| 5562172 | Wheeled vehicle arrangement for distributing agricultural materials in fields having undulations such as soft walled levees and the like Soft low pressure type trailer wheels are supported on inverted V-shaped wheel tandem-type support members. Each of the wheel support members is pivotally supported on a side of the trailer and arranged such that the front wheels are supported about twice... | 10/08/1996 |
| 5482326 | Apparatus providing a pivot axis to rear wheels Apparatus providing a pivot axis for rear wheels of a vehicle is disclosed. The vehicle has a chassis, an arm pivotally attached to the chassis and four rear wheels divided into two forward wheels and two rearward wheels. The apparatus of the present inve... | 01/09/1996 |
| 5447324 | Stabilized tandem axle drive suspension with elastomer spring in compression and shear A tandem axle vehicle suspension is provided which, in variant embodiments, employs one or two torque beams each supporting an axle of a tandem axle vehicle and each pivotally connected to a load compensator where a single elastomer spring is mounted betw... | 09/05/1995 |
| 5246246 | Walking beam track tension device The invention is a walking beam for a tandem wheel set having a continuous rack wrapped around tires on the set. The set's wheels are mounted on shoes which slide on bars forward or backward relative to the vehicle having the wheel set. A carriage member i... | 09/21/1993 |
| 5076378 | Vehicle with three-axle walking beams suspension This invention defines a suspension arrangement for off-highway vehicle that comprises a front pair or walking beams, a rear pair of walking beams, each beam pivoted to the vehicle underframe, articulated joints connecting the rear end of the front beam t... | 12/31/1991 |
| 5016905 | Tandem axle vehicle suspension system A suspension system for tandem axle vehicles includes: A pair of walking beams with opposite ends connected to tandem axles and with a transverse beam extending through said walking beams. A spring assembly located on each side of vehicle frame. Two verti... | 05/21/1991 |
| 4974684 | Walking beam retainer A wheel arrangement includes a retainer mechanism with a spring-loaded pin mounted on the walking beam of a support wheel assembly on a folding implement. A mating retainer supported on the wheel support tube is normally offset from the pin when the imple... | 12/04/1990 |
| 4968055 | Apparatus to vary axle orientation A device for changing the axle orientation in a balance beam suspension operates by introducing a variable axial eccentricity between an axle carrier and the beam hanger to vary the amount of yaw on the axle to enable the wheels on the axle to be oriented... | 11/06/1990 |
| 4951350 | Composite hinge pin A hinge pin of segmented form with its components in threaded connection with one another. The components of the pin include tool receiving surfaces engageable by a wrenching tool for applying torque during assembly and disassembly of the pin. The compone... | 08/28/1990 |
| 4872700 | Self-propelled vehicle having bogie-type running gear A common carrier for a feller-buncher, forwarder, or skidder comprising a self-propelled vehicle including a chassis and a bogie on either side of the chassis. The bogie includes a walking beam with pneumatic wheels on either end of the walking beam. A fi... | 10/10/1989 |
| 4840394 | Articulated suspension system A vehicle is provided which maintains a substantially constant weight, and therefore traction, on all wheels, despite one wheel moving considerably higher or lower than the others, while avoiding a very soft spring suspension. The vehicle includes a chass... | 06/20/1989 |
