Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7108601 | Grain threshing device A grain threshing device (10) comprising a receptacle (12) or receiving a portion of crop head. The receptacle (12) has a plurality of longitudinal ribs (30) on inner surfaces. One or more flexible arm members (28) are arranged on ... | 09/19/2006 |
| 5851145 | Hand portable grain threshing device A hand portable grain threshing device includes a base, a reel with elongate paddle members, a mesh screen mounted over the top of the reel, a trough and collection member for collecting grain heads or kernels, a variable speed actuator for rotating the r... | 12/22/1998 |
| 5106340 | Portable field thrasher A field thrasher includes a housing assembly and a thrashing assembly. The housing assembly includes an upper thrashing enclosure with a mouth opening and a chaffe discharge opening. A lower, collection enclosure is mounted below the thrashing enclosure a... | 04/21/1992 |
| 5041058 | Portable thrasher A portable thrasher includes a housing with an interior, a mouth for passing crop heads into the interior, a grain discharge opening and a chaffe discharge opening. A thrashing assembly includes a primer mover mounted on the housing, a generally cylindric... | 08/20/1991 |
| 4904224 | Harvesting machine A harvesting machine for feeding seed plants such as grain into the machine includes a threshing unit and a sieve set for threshing the seed plant and for separating the seeds from the rest of the vegetable material. The seeds are removed from the machine... | 02/27/1990 |
| 4724632 | Filament seed thresher A method and apparatus for removing appendages from seeds are described. The apparatus includes a chamber to contain the seed to be threshed. Mounted rotatively in the chamber is at least one filament spool means which, upon rotation, causes filament to b... | 02/16/1988 |
| 4700718 | Threshing method and equipment intended for its application The invention concerns a threshing method and the threshing equipment needed in its application which operates as part of a combine harvester working in the field. Threshing is performed by means of a roll (12) rotating about its axle shaft (11) and the f... | 10/20/1987 |
| 4285348 | Threshing machine A small scale threshing machine using a rotary flail wheel for threshing small lots of various seed crops. The machine includes a cylindrical hollow housing enclosing a flail wheel that rotates about a horizontal axis. A chute leads to an opening in the u... | 08/25/1981 |
| 4121779 | Mechanical separator for plant material A mechanical separator having a container providing a chamber for receiving plant material, such as herb plants, spice plants and the like, a motor driven substantially flexible member being rotatably supported for substantially free form random thrashing... | 10/24/1978 |
