Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8177310 | Elastomeric track field-repair assembly The field-repair assembly is used for temporarily repairing a ruptured or otherwise damaged elastomeric track mounted on a vehicle and generally allows the vehicle to proceed, preferably on its own, to a maintenance site located nearby where replacement or permanent... | 05/15/2012 |
| 7367637 | Endless track for high speed multi-terrain vehicles The track design for use with a tracked vehicle includes a cantilever cut made down into the outward side of each tread just outboard of the position where the inside of the track contacts the outboard edge of the tread of the outer wheel of each pair of track-suppo... | 05/06/2008 |
| 7229141 | Manoeuvrable traction track A one-piece track comprising, along each opposite edge thereof, regions having an accordion-type structure, which allows these regions to have a variable longitudinal length along each opposite edge of the track according to a movement of the tracked vehicle and to ... | 06/12/2007 |
| 7121636 | Endless track for paving vehicles A drive track is for a wheel train for mobilizing a paving vehicle upon a ground surface, the wheel train including a drive wheel and a bogie wheel. The track includes an endless body disposable about the wheel train and having a driven portion engageable by the dri... | 10/17/2006 |
| 7114788 | Angled traction lugs for endless band This invention refers to the traction lugs of reinforced elastomeric endless traction bands, and more particularly to those which are used on heavy vehicles like defense vehicles or for skid steer vehicles. More specifically, the invention relates to traction lugs w... | 10/03/2006 |
| 7083242 | Endless flexible track with reinforcing layers for all-terrain vehicles An endless flexible belt track produced from an elastomer comprises a steel cable (30) spirally wound in the thickness of the belt (12) and outer layers embedded in the thickness of the belt and formed successively from the turns (34) of the cab... | 08/01/2006 |
| 7077485 | Rubber crawler A core-less rubber crawler has a guide protrusion protruding from an internal surface of a rubber main body in the shape of an endless belt, and the protrusion extends in the lengthwise direction of the rubber main body at the center with respect to the widthwise di... | 07/18/2006 |
| 7048343 | Endless elastomeric track with corrosion resistant cables This invention relates to annular or endless elastomeric track 10 for use in vehicles for civil engineering, construction works and agricultural works. The track 10 has a thin belt 20 which includes a primary table 59 made of corrosion re... | 05/23/2006 |
| 6935708 | Track for all terrain vehicle A track for a vehicle travelling on all terrain, especially those displaying ruts, is formed of an endless longitudinal body displaying a series of longitudinally spaced drive lugs on its inner surface and a series of longitudinally spaced profiles on its outer surf... | 08/30/2005 |
| 6913329 | Endless rubber track having guide lugs with guide lug support layer, and vehicle containing such track The invention relates to an endless vehicular rubber track. The invention particularly relates to such track having hard rubber guide lugs with a softer guide support layer. It is to be appreciated that such guide lugs may also be positively driven drive lugs. The i... | 07/05/2005 |
| 6905182 | Elastic crawler An elastic crawler has a crawler body formed like an endless belt out of an elastic material, a plurality of driving projections provided on an inner circumferential surface of the crawler body with a predetermined pitch in the circumferential direction thereof, and... | 06/14/2005 |
| 6890042 | Crawler traveling apparatus A crawler traveling apparatus includes a rubber crawler belt having a plurality of driving projections formed with a predetermined peripheral pitch on an inner peripheral face of the belt, a drive wheel rotatable when engaged with the driving projections of the craw... | 05/10/2005 |
| 6832820 | Core bar of elastic body track shoe It is possible to achieve a light structure by making a part of a core bar thin and to prevent an elastic body from strain deforming by a smooth rib reinforcing portion from which an edge portion of the core bar does not protrude. It is possible to achieve a strengt... | 12/21/2004 |
| 6824229 | Nestable guide lug for a traction band This invention relates to the guide lugs of reinforced elastomeric endless traction bands, which are used on heavy vehicles like defence vehicles. More specifically, the invention relates to guide lugs which are partly nested into each other around the curved portio... | 11/30/2004 |
| 6764143 | Endless elastomeric track with corrosion resistant cables This invention relates to annular or endless elastomeric track 10 for use in vehicles for civil engineering, construction works and agricultural works. The track 10 has a thin belt 20 which includes a primary table 59 made of corrosion re... | 07/20/2004 |
| 6609770 | Caterpillar made of elastomer material A caterpillar made from elastomer material and having a plurality of guide teeth projecting from the inside surface of the caterpillar, the said guide teeth having lateral faces and front and rear faces in the longitudinal direction of the caterpillar, wi... | 08/26/2003 |
| 6530626 | Field-repair device for a rubber-band track The device (10) is used for temporarily repairing a ruptured or otherwise damaged rubber-band track (50) of a vehicle and allow the vehicle to proceed on its own to the nearest maintenance site or to a convenient location where replacement or permanent re... | 03/11/2003 |
| 6241327 | Endless track for high speed multi-terrain vehicles In a conventional rubber track of the type supported and driven by wheels mounted on a vehicle, the terrain-contacting lugs are modified specially for use on high speed multi-terrain vehicles to increase energy efficiency of track operation. The thickness... | 06/05/2001 |
| 6079802 | Rubber crawler In a rubber crawler, lags are generally are formed on the outer surface of an endless belt-like elastomer, and rubber projections for transmission of driving force and prevention of the rubber crawler from coming of off from a wheel are formed on the inne... | 06/27/2000 |
| 5988776 | Soft bottom flexible track belt assembly The soft bottom track assembly of the present invention includes inner pad assemblies, side plate assemblies, and link and cross bolt assemblies. An inner pad assembly includes a multiplicity of longitudinally arranged pads, hingedly attached one to the n... | 11/23/1999 |
| 5676436 | Positive drive endless rubber belted track A positive drive endless rubber belted track is adapted to be attached to track links of an endless track link assembly. The particular construction of the core and grousers of the belted track permit the rubber belted track to stretch as it passes over t... | 10/14/1997 |
| 5511869 | Replacement endless vehicle tracks A replacement endless drive track for use on a heavy duty tracked vehicle such as a bulldozer or tank includes a reinforced polymeric drive belt, two parallel sets of closely spaced rail blocks adjacent the drive belt, a plurality of drive pins extending ... | 04/30/1996 |
| 5511870 | Rubber track for vehicles The rubber vehicle track comprises a rubber structure (1) exhibiting on an external surface a series of shaped reliefs (2) and on an internal surface a series of metal rail tracts (4) partially sunk into the rubber structure (1), projecting from said stru... | 04/30/1996 |
| 5482364 | Replacement endless vehicle tracks A replacement endless drive track for use on a heavy duty tracked vehicle such as a bulldozer or tank includes a reinforced polymeric drive belt, two parallel sets of closely spaced rail blocks adjacent the drive belt, a plurality of drive pins extending ... | 01/09/1996 |
| 5186227 | Driving device A driving device comprises at least one chain (16) in the form of a closed loop. The chain is connected to at least one driving member arranged to cause the chain to orbit. Furthermore, the chain is laid over diverting members which in combination with th... | 02/16/1993 |
| 4715668 | Pneumatic mattress track system for vehicles Pneumatic mattress track system to be used as a construction element in vehicles. A soft air filled mattress formed for instance by mattress bags (5) is automatically rolled out and serves as running surface and means of propulsion. The hull (1) of the sy... | 12/29/1987 |
| 4687261 | Tracks for track-laying vehicles A light-weight track for a track-laying vehicle in which a flexible belt (11;64) has rigid driving members (28;61) secured to its inner surface for engagement with a drive sprocket (40,75). Successive driving members are staggered relative to the longitud... | 08/18/1987 |
| 4664212 | Vacuum wall crawler A vacuum wall crawler is provided with a pair of endless belts at both sides of the frame, the pair of endless belts having at their outer surfaces a plurality of recesses each of which has a through hole. Air in the recesses is sucked through suction cha... | 05/12/1987 |
| 4613006 | Endless belt driven cycle A ground support vehicle has a rear drive track. Cleats extending transversely of the outer surface of the track are outwardly curved to facilitate leaning of the vehicle and its rider as the vehicle travels around a curve. In a preferred embodiment the v... | 09/23/1986 |
| 4572528 | Grass ski A grass ski for enabling skiing on a grass covered sloped surface without the presence of snow includes a flexible runner defined by an endless guide track on which is mounted boot supports and bindings for attachment to ski boots and on which is movably ... | 02/25/1986 |
| 4541498 | Apparatus for increasing vehicle mobility Apparatus adapted to be mounted on a vehicle frame for the purpose of increasing traction comprises an L-shaped framework, a first shaft rotatably mounted on the upper portion of the framework, a second shaft rotatably mounted on the framework and dispose... | 09/17/1985 |
| 4407550 | Resilient band structure having improved laminated core and drive shoes An annular resilient band structure designed for installation on a ground hicle to provide tractive propulsion force and vehicle suspension force. Resilient suspension function is achieved by an annular resilient leaf spring core encapsulated within an el... | 10/04/1983 |
| 4386809 | Driving-guidance system for a resilient vehicle propulsion band In a ground vehicle having resilient endless bands engaged with the terrain or suspension and propulsion purposes, improved novel roller arrangements for maintaining a desired band envelope under adverse operating conditions, such as large vehicle accelera... | 06/07/1983 |
| 4270811 | Buckle proof wear resistant endless traction band A vehicle supporting endless traction band including an endless resilient band of concavo-convex transverse shape and a pair of assemblies for supporting and protecting opposite sides of the band. The assemblies are similar to conventional roller chains e... | 06/02/1981 |
| 4269457 | Endless traction band support apparatus A vehicle supporting endless traction band including an endless resilient band of concavo-convex transverse shape and a pair of assemblies for supporting and protecting opposite sides of the band. The assemblies are similar to conventional roller chains e... | 05/26/1981 |
| 4154488 | Traction device for cross-country vehicles and machines A cross-country vehicle includes a wheel provided with an outer layer of resilient material having a plurality of circumferentially disposed protruding teeth. A track is provided about the wheel and has a plurality of transverse bars connected to one anot... | 05/15/1979 |
| 4093318 | Endless drive system An endless drive system suitable for use as an endless belt, an endless chain drive or an endless track vehicle drive system. The endless drive system includes endless drive sections, with sloped sides to shed dirt or other foreign objects, and fasten piv... | 06/06/1978 |
| 3934943 | Endless track adapted for use with track laying vehicles An endless track belt adapted for use on all types of track laying vehicles. The track is constructed to have the capability of utilizing ground material coherence as a primary means of flotation. In the exemplary form, the track is in the form of a grid ... | 01/27/1976 |
