Today In History
James McLean is issued a patent for a piano.
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 |
| 8171808 | Material sampling device with rotatable tube assembly A material sampling device comprises an auger, a first motor, and a rotatable tube assembly. The auger is configured to extract material from a container. The first motor is configured to rotate the auger. The rotatable tube assembly comprises an outer tube and a se... | 05/08/2012 |
| 7360725 | Material crusher Crusher has a housing with a cylindrical crushing chamber defined by a tubular wall. Opposed side plates are secured to respective ends of the wall. A drive shaft rotates impact tools within the chamber. An intake aperture and a discharge aperture are in communicati... | 04/22/2008 |
| 5413004 | Method and apparatus for sampling coal A coal sampling device is provided for the efficient extraction of a core sample of coal from a container, such as a coal truck or railroad hopper car, and crushing of the extracted coal sample into particles useful for laboratory analysis. Uncrushed piec... | 05/09/1995 |
| 5370218 | Apparatus for hauling coal through a mine A coal haulage apparatus is provided for use in moving coal fragments within the horizontal shafts of a coal mine on a belt conveyor that runs longitudinally along the apparatus. The apparatus is an assembly of multiple, like sections that each have a pai... | 12/06/1994 |
