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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8151913 | Dual wheelend for a vehicle An axle assembly for a vehicle comprising a stationary spindle and a rotatable axle shaft. An intermediate hub is supported on the spindle. Adjacent inner and outer wheel hubs are supported on the intermediate hub. A differential mechanism interconnects the inner an... | 04/10/2012 |
| 7878278 | Heavy vehicle Presented is a heavy vehicle, such as a transport vehicle or civil engineering vehicle, of a mass greater than 500 metric tons and operable to generate a motive power. The vehicle includes tires of radial structure having a diameter greater than 3.5 meters, a front ... | 02/01/2011 |
| 7757795 | Dual wheelend for a vehicle An axle assembly for a vehicle comprising a stationary spindle and a rotatable axle shaft. An intermediate hub is supported on the spindle. Adjacent inner and outer wheel hubs are supported on the intermediate hub. A differential mechanism interconnects the inner an... | 07/20/2010 |
| 7413039 | Heavy vehicle Presented is a heavy vehicle, such as a transport vehicle or a civil engineering vehicle, of a mass greater than 500 metric tons. The vehicle is fitted with tires of radial structure having a diameter greater than 3.5 meters and an axial width greater than 37 inches... | 08/19/2008 |
| 7287934 | Stratum disposal monitoring system In monitoring a stratum disposal field for wastes, running tubes installed in the vicinity of a gallery or disposal holes, in a nearby rock bed, or within a gallery support or buffer members in the disposal holes have installed therein a movable monitoring device pr... | 10/30/2007 |
| 6923278 | Adjustable anti-tip wheels for power wheelchair A power wheelchair with front anti-tip wheels for substantially eliminating partial tips of the wheelchair is described. The anti-tip wheels are attached to the end of an extension arm which is attached to the frame of the wheelchair. A spring connects the anti-tip ... | 08/02/2005 |
| 6672985 | Independently rotating wheels with planetary drive A wheel end assembly having a dual wheel configuration includes independently rotating wheel hubs to reduce tire wear. The wheel end includes a first planetary gear assembly with a sun gear driven by a differential side gear and a ring gear for driving on... | 01/06/2004 |
| 6527073 | Dual wheel assembly with variable wheel engagement A variable engagement mechanism for a dual wheel assembly is provided. The mechanism includes a spindle having a drive axle defining a rotational axis. A first wheel hub is supported on the spindle and coupled to the drive axle for being rotatably driven ... | 03/04/2003 |
| 6428026 | Staggered independent suspension A wheel suspension system for a vehicle such as a truck trailer. Wheels of the suspension system are attached to stub axles supported by pivoting trailing arm wheel supports. The wheel supports are arranged on a sub-frame which can be slidingly coupled to... | 08/06/2002 |
| 6267188 | Drive assembly for independently driving vehicle wheels A drive assembly for independently driving wheels of a vehicle is disclosed. The drive assembly includes a wheel set positioned at a left or right side of the vehicle. The wheel set includes inner and outer wheels and tires associated with the inner and o... | 07/31/2001 |
| 6189931 | Cargo carrier A cargo transfer carrier for use in the unloading of break bulk goods. The cargo carrier has a plurality of longitudinal frame members connected by a plurality of cross members with decking affixed thereto to form a horizontal carrier bed. The bed is of s... | 02/20/2001 |
| 5609216 | Mobile base having leg assemblies with two wheels A mobile base for moving on a surface is provided having a driving and steering unit and a plurality of wheel assemblies. The driving and steering unit provides a drive force and a steering force. Each wheel assembly has a wheel assembly axis, and also ha... | 03/11/1997 |
| 5490755 | Self-propelled loader carrier A self-propelled boom loader is arranged as a hybrid between a trailer and a self-propelled vehicle. The loader has a carriage with a pair of independently controllable drive wheels powered by hydraulic drive motors and a free turning third wheel caster s... | 02/13/1996 |
| 5139314 | Load equalizing, dual wheels for grain cart First and second pairs of wheels are mounted to respective sides of a grain cart in a manner which avoids tire "scrubbing," such as when a tire is forced sideways over a support surface without rotation, as the cart is displaced in a turning manner over u... | 08/18/1992 |
| 4560018 | Wheel tandem drive mechanism A drive mechanism is disclosed for rotating a pair of tandem wheel assemblies journalled on a centrally pivoted tandem drive housing. A jointless elastomeric belt extends about the wheel assemblies which are driven by two chains entrained over respective ... | 12/24/1985 |
