Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7832508 | 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... | 11/16/2010 |
| 7721832 | 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 end... | 05/25/2010 |
| 7584812 | Articulated dozer with suspension and suspension lockout An articulated loader has an articulated chassis and two A-frames. The points of the A-frames face each other. The articulated chassis includes a front portion and a rear portion. Likewise, there is a front or first A-frame and a rear or second A-frame. The A-frames... | 09/08/2009 |
| 7395890 | Snowmobile track suspension A rear track suspension for a snowmobile having a single resilient element for biasing both the front and rear arms. The slide rail is permitted to pitch between first and second pitching constraints in response to terrain obstacles in a gradual manner as the motion... | 07/08/2008 |
| 7328760 | Semi tracked-type working vehicle A semicrawler-type working vehicle is provided having a vehicle body (3), a front steering control wheel (7) arranged at a front side of the vehicle body, a drive shaft (26) and a pivot shaft (22) arranged at a rear side of the vehicle bo... | 02/12/2008 |
| 7278506 | Snow vehicle suspension system A vehicle comprises a frame and a slide rail pivotally coupled to the frame. A spring member urges the slide rail in a direction away from the frame. The spring member has a first portion mounted to the frame and a second portion supported on the slide rail at a fir... | 10/09/2007 |
| 7231993 | Drive track support with vibration isolation A track driven machine has a pair of track frames on opposite sides thereof, and each of the track frames has a pair of laterally extending arms fixed thereto. The arms are joined to a machine frame only through vibration isolating elastomeric blocks that carry comp... | 06/19/2007 |
| 7232134 | Steering ski for snow vehicle A snowmobile has a pair of steering skis. Each ski has an elongated primary section that has a bottom surface. The bottom surface extends generally horizontally and warps upward at a forwardly end. A keel section extends along the primary section. The keel section p... | 06/19/2007 |
| 7188915 | Suspension and drive mechanism for a multi-surface vehicle A tracked vehicle produces a pressure no more than 3 psi on the ground by increasing the number of contact points on the inner surface of the track. The stiffness of the track is also selected to minimize bowing between the idler wheels or rollers. The track is ther... | 03/13/2007 |
| 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 |
| 7025429 | Drive assembly for a track-type vehicle A drive assembly for a track-type vehicle which makes the effective ground contact length within the tumbler distance as large as possible. The drive assembly has a single track roller unit disposed closest to the idler and closest to the sprocket respectively, each... | 04/11/2006 |
| 7017688 | Independent suspension for multi-use vehicle A half-track vehicle includes a frame, first and second beams having forward and rearward wheels attached thereto, and first and second suspension systems. The frame includes a first side and a second side, and the first suspension system suspends the first beam fro... | 03/28/2006 |
| 7014278 | Drive assembly for a track-type vehicle A drive assembly has a track frame, an idler, and a sprocket arranged substantially on a straight line that includes single track roller units disposed respectively closest to the idler and closest to the sprocket. The single track roller units each rotatably suppor... | 03/21/2006 |
| 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 |
| 6945342 | Track drive undercarriage device, kit and method A track drive undercarriage device, a kit for the device, and a method of using the same are described attached to a chassis of a heavy construction work vehicle for operationally connected to a transmission and drive shaft of the construction vehicle. The device is... | 09/20/2005 |
| 6921304 | Amphibious vehicle The amphibious vehicle is a motorized vehicle capable of travel on land as well as in the water. The amphibious vehicle has a boat-like hull, and a caterpillar track assembly mounted along each side by hinges. The tracks are arranged so that they can be rotated betw... | 07/26/2005 |
| 6840338 | Articulation of suspension in an independently suspended beam structure A half-track all-terrain vehicle having an independent suspension system that provides an improved vehicle ride and facilitates traversing obstacles. The vehicle includes a frame, a pair of beams that each holds front and rear wheels, and a suspension system extendi... | 01/11/2005 |
| 6761235 | Machine frame assembly for a track-type machine A machine frame assembly is provided that includes a machine frame, a hollow pivot shaft attached to the machine frame and configured to support a drive assembly for a track-type machine to allow pivotal movement of the drive assembly relative to the machine frame, ... | 07/13/2004 |
| 6749034 | Motorized traction device for a patient support A patient support including a propulsion system for moving the patient support. The patient support includes a propulsion system having a propulsion device operably connected to an input system. The input system controls the speed and direction of the propulsion dev... | 06/15/2004 |
| 6564889 | Crawler vehicle A crawler vehicle comprises a body frame and an auger mounted to the body frame at a front portion thereof, the body frame being mounted to a rear portion of a crawler frame via a pivot shaft to allow the crawler frame carrying a crawler belt to swing ver... | 05/20/2003 |
| 6502651 | Suspension mechanism for a snowmobile Devices and methods for suspending a vehicle are disclosed. A suspension mechanism in accordance with the present invention includes a suspension arm having a first end and a second end, a swing arm having a first end pivotably coupled to the first end of... | 01/07/2003 |
| 6394204 | Crawler or tracked vehicle having pivotable tracks A crawler or tracked vehicle has a running gear with separately operable tracks, and a vehicle body pivotably connected to the running gear about a substantially horizontal pivot axis that allows the running gear to pivot relative to the vehicle body. The... | 05/28/2002 |
| 6354389 | Suspension mechanism for a snowmobile Devices and methods for suspending a vehicle are disclosed. A suspension mechanism in accordance with the present invention includes a suspension arm having a first end and a second end, a swing arm having a first end pivotably coupled to the first end of... | 03/12/2002 |
| 6283241 | Rear suspension for snowmobiles A number of embodiments of snowmobile suspensions for the drive belt of the snowmobile. The suspension includes a single cushioning unit that has its opposite ends loaded by a linkage system that is interposed between a guide rail and a frame of the snowm... | 09/04/2001 |
| 6012724 | Wheel suspension system Wheel suspension system for a vehicle having a frame and a wheel oriented in a longitudinal direction of the vehicle. The system includes an axle beam coupled to the frame of the vehicle and a traction motor coupled to the wheel for rotating the wheel. Th... | 01/11/2000 |
| 5947217 | Track laying vehicle A track vehicle that uses a sliding rail type suspension, which is mounted on the outside of the vehicle frame. A supporting frame is used to support the outer edge of the track. The use of this type of suspension allows the vehicle to operate at speeds i... | 09/07/1999 |
| 5904216 | Rear suspension for snowmobile A number of embodiments for suspension units for snowmobile drive belts that provide a compact assembly and yet permit the use of a single cushioning unit that can extend horizontally within the frame so as to provide large suspension travel in a relative... | 05/18/1999 |
| 5899543 | Resilient support element for roller wheels of a rubber tracked vehicle A resilient suspension element for use in a resilient system for supporting roller wheels from the undercarriage of a tracked vehicle having a rubber track. The resilient suspension element includes a T-shaped and a U-shaped rigid mounting component, with... | 05/04/1999 |
| 5899542 | Support system for roller wheels of rubber tracked vehicle A system for supporting roller wheels from the undercarriage of a tracked vehicle having a rubber track. A beam, extending transverse to the axles of the roller wheels mounted thereon, is supported at each end by a resilient suspension element which provi... | 05/04/1999 |
| 5894901 | Endless track magnetic traveling device Magnets 1 are pressed against a vehicle body (side plates, a rotary shaft, a supporting beam 12 of springs 10, etc.), which travels on an endless track comprising the magnets 1, a chain 5, etc., by auxiliary wheels 9 having a plurality of springs 10 which... | 04/20/1999 |
| 5785395 | Cushioned roller for a belted undercarriage Rollers used in the past have usually been cushioned by the attachment system. The present cushioned roller includes the cushioned member being an integral part of the roller. For example, the unique roller includes a pair of individual shell portions pos... | 07/28/1998 |
| 5749423 | Belted work machine A heavy duty belt laying work machine includes a frame, a driver wheel mounted in supporting relation to the frame on each lateral side thereof, an idler wheel assembly disposed on each lateral side of the frame. The idler wheel assembly includes an idler... | 05/12/1998 |
| 5727643 | Suspension device for a snowmobile A suspension device for providing a resilient support for a snowmobile body includes a frame for supporting the snowmobile body. A slide rail is operatively connected to the frame for pressing a crawler belt against a snow surface. A swing arm includes a ... | 03/17/1998 |
| 5622234 | Track suspension system and track gauge adjustment assembly A suspension system for a tracked vehicle comprising a first axial member pivotally coupled to the main drive wheel axle housing and extending forward towards the idler wheel, and a second axial portion pivotally coupled to the first axial member and to w... | 04/22/1997 |
| 5503238 | Spring mounted tracked tractor chassis A spring mounted tracked tractor chassis comprises a double-armed balance beam, having upper and lower arms, rotatably mounted by the lower arm to a main arm. The balance beam carries a journal of a tensioning wheel and its upper arm is rotatably connecte... | 04/02/1996 |
| 5324065 | Suspension assembly for a heavy vehicle, in particular for a tracked vehicle The invention relates to an oscillating arm suspension assembly for a heavy vehicle, in particular for a track vehicle. According to the invention, the oscillating arm comprises a housing receiving firstly a shock absorber of the type in which a semi-soli... | 06/28/1994 |
| 5286044 | Belted multi-purpose trailer A belted multi-purpose trailer vehicle has first and second roller frame assemblies and a main support frame assembly. The roller frame assemblies are connected to the support frame assembly by first, second, and third quick release connecting mechanisms.... | 02/15/1994 |
| 5273126 | Tracklaying vehicles A suspended-track tracklaying vehicle 8 (FIG. 1) comprises an endless ground-engaging track 12, a drive sprocket 20 which remains positionally fixed relative to the vehicle body, a rear idler 14 and track-engaging ground rollers 16 which move with the swi... | 12/28/1993 |
| 5183287 | Suspension system for road wheel of a track laying vehicle A suspension system (28) for a track laying vehicle includes a support arm (30) that defines a cavity (36) and has a first end (32) about which the arm pivots under the control of a stationary crank arm (38) and a cylinder of (42) supported for swiveling ... | 02/02/1993 |
| 5064011 | Crawler-propelled truck A crawler-propelled truck includes a chassis frame assembly, an engine mounted on the chassis frame assembly and having a substantially vertical crankshaft, a gear transmission case having an upper portion coupled to the engine and housing a gear transmis... | 11/12/1991 |
