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| Number | Title | Issue Date |
| 7850252 | Loose terrain traction-assist device for wheeled all-terrain and utility vehicles A loose terrain traction assist device for wheeled vehicles includes a generally frusto-conical structure having a proximal portion with a diameter smaller than an overall diameter of a tire of a vehicle, a distal portion that extends outwardly from the wheel, and a... | 12/14/2010 |
| 6637834 | Variable-diameter wheel apparatus for motor vehicles A wheel-and-tire apparatus having at least two coaxially mounted tires is disclosed in which the diameters of one or more of the tires in the apparatus may be adjusted to select the tire or tires which are to be in contact with the road surface. The appar... | 10/28/2003 |
| 6386252 | Traction device for vehicle wheels A traction device for vehicle wheels comprises an expandable and contractible member (10) mounted next to a wheel (70) or in between dual wheels (12, 14). In another embodiment the device comprises an air chamber (106, 134) formed in the tread of the tire... | 05/14/2002 |
| 6336515 | Unsprung vacuum-operated traction enhancement system for land vehicles A vacuum intake horn is constantly secured to a portion of a land vehicle and connected to a vacuum generator to increase the load on the wheels and, thereby, enhance traction. In order to minimize the clearance between the intake horn face and road surfa... | 01/08/2002 |
| 6244666 | Traction device for vehicle wheels A tire as provided with a circumferential portion for contacting a road surface. Edge segments thereof include studs and an inflatable chamber at the edge segment is inflated and deflated to extend and withdraw the edge segments for engagement and disenga... | 06/12/2001 |
| 6241321 | All terrain wheel for a wheelchair An all terrain wheel for a wheelchair includes an integral wheel body having an annular rim, a central hub, and an array of struts extending radially between the hub and the rim. An outer face of the rim includes a circumferential groove sized and configu... | 06/05/2001 |
| 5810451 | Traction device for vehicle wheels A traction device for vehicle wheels has tread segments that are expandable and contractible by secondary inflatable chambers to place studs either in engagement or out of engagement with a road surface. Alternatively, stud bearing tread segments are remo... | 09/22/1998 |
| 5716106 | Traction enhancing device An auxiliary traction device for use with a wheeled vehicle to be attached o the vehicle wheels for additional traction during traverse of soft terrain. The traction device includes a spider adapted for attachment to the wheel hubs of the vehicle with a fr... | 02/10/1998 |
| 5427398 | All-terrain wheelchairs and apparatus therefor A lightweight set of attachments adapted to convert a conventional wheelchair to an all-terrain vehicle without compromising the general utility of said wheelchair for everyday use.... | 06/27/1995 |
| 5423195 | Portable cooler chest with pivoting wheels having expanded circumferential rolling surfaces A portable cooler chest is disclosed having a collapsible storage bin for nonperishable items and wheels specially adapted for rolling on sand or soft soils. The collapsible storage bin includes foldable side panels and may be integrated with or separable... | 06/13/1995 |
| 5282503 | Anti-skid device for use on pneumatic tires An anti-skid device for use on pneumatic tires of an automotive vehicle includes a supporting ring rotatably provided on the outer circumferential periphery of a mounting plate that is detachably mounted on the wheel portion of the automotive vehicle, a p... | 02/01/1994 |
| 5254187 | Anti-skid device for vehicle wheels The anti-skid device includes a housing capable of being removably fastened on an outer side of a vehicle wheel. An anti-skid travel path, formed of chains, is connected to a plurality of radial arms of the housing. The chains are automatically positioned... | 10/19/1993 |
| 5223058 | Device for the attachment of an antiskid device to a motor vehicle wheel rim The invention relates to a device for the releasable attachment of an antiskid device to the rim of a motor vehicle wheel, having: a base disc which is formed with a central opening and can be screwed coaxially to the outside of the rim; and a more partic... | 06/29/1993 |
| 5147479 | Anti-skid device for use on pneumatic tires for automotive vehicles An anti-skid device for use on pneumatic tires of an automotive vehicle includes a supporting ring rotatably provided on the outer circumferential periphery of a mounting plate that is detachably mounted on the wheel portion of the automotive vehicle, a p... | 09/15/1992 |
| 5022711 | Auxiliary tractor wheel for increased traction An auxiliary traction wheel is provided for use in combination with a tractor wheel so as to provide increased traction for the tractor. The traction wheel includes a pair of spaced apart rims at the perimeter of the wheel defining a channel therebetween.... | 06/11/1991 |
| 4906052 | Tire crampon The tire crampon comprises a cross-shaped member having four arms, interconnected by half-braces bearing bushes for connection to a vehicle's wheel hub bolts. Counter-arms are slideable on the arms and each have a toothed sector rigidly associated with an... | 03/06/1990 |
| 4641850 | Wheelchair adapter wheel Thin wide metal bands encircle the propulsion wheels of a wheelchair to enable the chair to be operated on a beach or on other soft terrain. The somewhat flexible bands have separated ends which are drawn together and secured by an elastic connector web a... | 02/10/1987 |
