Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8061459 | Traction control method for a tracked vehicle The present invention provides a traction control method for a tracked vehicle such as a military tank. The method includes calculating a track proportionality factor and a vehicle proportionality factor based on predefined attributes of the tracked vehicle. A minim... | 11/22/2011 |
| 7836982 | Compact crawler type tractor A compact crawler type tractor having an excellent turning feeling is provided. A hydraulic speed change mechanism for turning includes a hydrostatic transmission pump for turning and a hydrostatic transmission motor for turning, and is characterized in that the hyd... | 11/23/2010 |
| 7798260 | Track vehicle having drive and suspension systems A track vehicle includes a cab operable to support an operator. Left and right motors each rotate an output shaft at a first speed, and a speed reduction system is operably coupled to each output shaft. Left and right drive shafts are driven by the speed reduction s... | 09/21/2010 |
| 7784568 | Method and apparatus for controlling tracked vehicles Apparatus for controlling a track on a tracked vehicle may comprise a drive system, a clutch, a brake, and a track control system to operate the clutch and the brake. A control signal generator operatively associated with the track control system produces control si... | 08/31/2010 |
| 7575075 | Tracked vehicle The present invention is an improved personal tracked vehicle consisting of a platform pivotally mounted on top of a housing, the platform having a right and left side and a central axis. The platform is pivotally movable between a first position wherein the right s... | 08/18/2009 |
| 7434637 | Working-machine steering apparatus Working-machine steering apparatus includes an assist mechanism for reducing a force necessary for operating any one of left and right operating members. First and second cord members, connected to the left and right operating members, are wound on first and second ... | 10/14/2008 |
| 7326141 | Compact fault tolerant variable cross-drive electromechanical transmission A transmission drive system (TDS) has two AC induction traction motors, each operatively coupled to two semi-independent coaxial traction shafts, and two AC induction steer motors coaxially mounted on a common steer axis parallel to the coaxial traction shafts. A st... | 02/05/2008 |
| 7293374 | Crawler frame for construction machine A crawler frame includes a center frame and right and left track frames disposed at right and left sides of the center frame so as to extend in a back and forth direction, wherein legs for connecting a central frame section of the center frame to the track frames ar... | 11/13/2007 |
| 7293375 | Crawler frame for construction machine In a crawler frame in which legs in a center frame are formed from cast steel, a simple structure is achieved by reducing the number of components. To this end, the crawler frame, which has a center frame composed of a central frame section for supporting a swing be... | 11/13/2007 |
| 7267188 | Electric vehicle An electric vehicle has a control unit having a decelerating control function of decelerating an electric motor disposed on a side of a vehicle body corresponding to a turning direction of the electric vehicle, and an accelerating control function of outputting an a... | 09/11/2007 |
| 7255184 | Track assembly A track assembly having first and second hub assemblies that are operatively connected to a support frame by first and second attachment members, respectively. The first and second attachment members include resilient or movable mounts that are configured so that th... | 08/14/2007 |
| 7246670 | Work vehicle with hydrostatic steering system A work vehicle with a hydrostatic steering system is disclosed which is capable of performing optimum control of the absorption torque of a hydraulic pump according to running load; capable of preferentially ensuring turning performance and implement speed when runn... | 07/24/2007 |
| 7228927 | Vehicle protection against the effect of a land mine A vehicle with protection against the effects of an exploding land mine is provided, in which a military wheeled vehicle is provided with wheel axels and drives built into front and/or rear building blocks. The vehicle is divided into multiple building blocks, altho... | 06/12/2007 |
| 7201106 | Hydrostatic hi-rail system A hydrostatic hi-rail system for use with a railway maintenance vehicle to allow travel along railway rails by raising the vehicle off of road-engaging tires onto rail-engaging flanged rail wheels. The operator controlled system includes front and rear lift assembli... | 04/10/2007 |
| 7182353 | Turn brake for multi-track vehicles A turn brake includes a cylinder assembly coupled to a conventional front-wheel steering system of a multi-track vehicle. The cylinder assembly generates fluid power for applying differential braking force to left and right wheels of the vehicle in response to turni... | 02/27/2007 |
| 7142956 | Automatic steering system and method An automatic steering system and method are provided for a vehicle including an hydraulic primary steering system. The automatic steering system includes a guidance module with a GPS receiver and a microprocessor adapted to process and store GPS data defining travel... | 11/28/2006 |
| 7131507 | Tracked ATV The invention relates to a tracked ATV which is fully supported, driven and steered by a pair of parallel endless tracks driven by means of an internal combustion engine. Steering means are arranged to control the differential speed between the tracks for steering t... | 11/07/2006 |
| 7086490 | Tracked vehicle A tracked vehicle has smooth driving and idler wheels (6, 7, 8, 9), which frictionally transmit the tractive force to tracks (3, 4), e.g. rubber tracks, and which are mounted on a frame (3) of the vehicle which carries at least one driving engin... | 08/08/2006 |
| 7073613 | Motorized vehicle A motorized vehicle has a vehicle body, at least a pair of wheels mounted on the vehicle body for undergoing rotation to cause the motorized vehicle to undergo travelling, and a pair of electric motors each mounted on the vehicle body to selectively undergo forward ... | 07/11/2006 |
| 7066276 | Method and apparatus for excavating earth to a desired depth A system and method of facilitating excavating a below grade opening at a construction site in a parcel of land includes a first vehicle having a motor operably connected to at least a pair of traction members and a second excavating vehicle. The motor is operably c... | 06/27/2006 |
| 7059433 | Riding lawn mower A transmission for speed changing and steering of a vehicle comprises a first HST and a first differential for speed changing and a second HST and a second differential for steering. The first HST is a combination of a hydraulic pump and motor. The pump is driven by... | 06/13/2006 |
| 7059434 | Hand controls for small loader A control system for a small work vehicle such as a compact track propelled loader has a control handle that is mounted onto a swinging support plate. The support plate swings about a vertical axis positioned forwardly of the control handle, and the control handle i... | 06/13/2006 |
| 7007761 | Emergency response vehicle A small emergency response vehicle having a wedge-shaped nose and triangular wheel base for improved accessibility to emergency sites previously inaccessible to conventional fire fighting vehicles. A main overhead tank and two modular auxiliary tanks provide 2400 li... | 03/07/2006 |
| 7003386 | Device and method for determining the position of a working part The invention relates to a device and to a method for determining the position for a working part of a tool on a working machine with a position-determining apparatus (2, 4, 5, 6; 2, 4a, 4b, 5, 6′; 31, 33, 49, 50, 51, 1′,53). At least one de... | 02/21/2006 |
| 6988571 | Crawler tractor The purpose of the invention is to enable a crawler tractor to brake and stop certainly without applying a load to an engine and a driving mechanism, and without complicated operation. An operation link links a conic linkage (53) which links a steering wheel ... | 01/24/2006 |
| 6968914 | Tracked vehicle with improved track drive unit An all-terrain vehicle is supported and driven by endless track units. Each track unit includes a drive belt with rows of interior drive lugs driven by cogs on multiple sprocket wheels of a common drive wheel assembly having an integrated, one-piece drum and hub. Mu... | 11/29/2005 |
| 6954003 | Mobile, self-sufficient operating assembly for providing electrical energy A mobile, self-sufficient operating assembly for providing electrical energy which includes two internal-combustion engines (21, 23) as well as two generators (22, 24). The internal-combustion engines (21, 23) and the generators (22, 24) ... | 10/11/2005 |
| 6935445 | Back-up steering system for track laying vehicles A back-up steering system is provided having a hydraulic pump, an accumulator, a mode control valve, a main solenoid valve, and a pair of back-up solenoid valves. The system is connected, to left and right service brakes. The hydraulic pump and the accumulator are b... | 08/30/2005 |
| 6918850 | Working vehicle In a working vehicle, a variable output HST and a planetary gear unit are connected with an engine, which is supported on a vehicle frame closer to a first side of a fore and aft direction of the vehicle in vibration free manner so as to together constitute a drivin... | 07/19/2005 |
| 6913103 | Hydraulically driven traveling vehicle A hydraulically driven traveling vehicle comprising a pair of right and left driving axles (driving sprockets) differentially connected to each other by a differential mechanism, the input section of the differential mechanism having the output rotation of traveling... | 07/05/2005 |
| 6910544 | Work machine arrangement In the operation of work machines of the type having an extensible arm, the maximum reach of the arm for a given work machine is limited by such factors as the vehicle's weight, body size and engine placement. The present invention provides for a work machine arrang... | 06/28/2005 |
| 6907951 | Snowmobile planetary drive system Disclosed is a snowmobile including reduction drive including a planetary gear system having a shaft with a sun gear, a plurality of planetary gears spaced around the sun gear and engaging a ring gear. A second shaft is driven by said planetary gears or ring gear. | 06/21/2005 |
| 6902027 | Piping structure of crawler driving hydraulic motor A piping structure of a crawler driving hydraulic motor able to reduce a reduction in strength of a vehicle body frame and shorten the exposure length of a hydraulic piping in the exterior of the vehicle body frame, and reduce a damage opportunity due to an external... | 06/07/2005 |
| 6837318 | Rescue and exploration apparatus A rescue and exploration apparatus that has a first continuous track rotatably supported within a first frame and a second continuous track rotatably supported within a second frame. The first and second continuous tracks are driven by at least one drive motor. The ... | 01/04/2005 |
| 6805218 | Motorized vehicle A motorized vehicle has wheels mounted on a vehicle body for undergoing rotation to cause the motorized vehicle to undergo travelling, electric motors for selectively undergoing forward and reverse rotation to rotationally drive respective ones of the wheels, brakes... | 10/19/2004 |
| RE38632 | Propulsion control apparatus and method for a paver An apparatus is disclosed for controlling the propulsion and steering of a machine. The machine includes a hydrostatic system that drives a pair of ground engaging traction devices. An electronic controller receives operator signals indicative of a desired travel sp... | 10/19/2004 |
| 6712187 | Clutch adjustment method and apparatus thereof A clutch adjustment method and apparatus thereof are described which are capable of properly compensating for performance variations or performance deterioration due to variations or wear in various parts. The apparatus comprises: (a) adjustment mode setting means f... | 03/30/2004 |
| 6691806 | Drive unit for a Track-laying vehicle The invention concerns a drive unit for a tracked vehicle with a first and a second electric generator (6, 8) and with a first and a second internal combustion engine (10, 12), such that one generator (6, 8) can be driven respectively by one combustion en... | 02/17/2004 |
| 6637529 | Steering control system for tracklaying vehicle A steering control system for a tracklaying vehicle, which ensures smooth turning performance according to various modes such as ascent travel, descent travel, and travel in a low speed range and which provides improved controllability. According to vario... | 10/28/2003 |
| 6604590 | Battery powered, all-terrain vehicle for the physically challenged A battery powered, all-terrain vehicle for the physically challenged comprises a battery powered transportation unit that allows a handicapped person to travel on otherwise inaccessible terrain.... | 08/12/2003 |
