William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7207346 | Hydrostat for portable gas range Provided is a hydrostat for a portable gas range, which prevents the explosion of a gas container by automatically discharging overcompressed gas from the gas container when the inner pressure of the gas container increases to an explosion pressure. The hydrostat in... | 04/24/2007 |
| 7053318 | Machine for weighing and sorting pieces of fruit and the like The machine has a regular structure symmetrical with respect to a central axis and provided with limiting end faces, said structure being disposed with its horizontal axis rotatably supported on its axis of symmetry on the frame of the machine, and bearing a plurali... | 05/30/2006 |
| 6877611 | Weight sorter A weight selecting apparatus capable of automatically performing calibration, and providing a weight selecting apparatus capable of certainly carrying objects to be inspected with a relatively simple mechanism and performing weight measurement of the objects. The ob... | 04/12/2005 |
| 6407346 | Rotary check weigher A check weigher for a bagging system includes a compartmentalized rotatable drum positioned immediately beneath a chute receiving bags from a conveyor system of a bagger. The rotatable drum is maintained upon a scale adapted to determine the tare weight o... | 06/18/2002 |
| 5626238 | Device for conveying products, in particular fruit, adapted to sort these products as a function of predetermined selection criteria The invention relates to a device for conveying products, in particular fruit, including two conveyors extending as an extension of one another and having an intermediate transfer zone in which they are disposed side by side and parallel with respect to o... | 05/06/1997 |
| 5579922 | Mixed cargo conveyer (sorter) for sorting pieces of mixed cargo A mixed cargo conveyer (1) for sorting coded pieces of mixed cargo having a driven, endless conveyer track (8) which is a plurality of conveyer elements joined to one another by articulated joints, movable along a guideway (11), and each having a bearing ... | 12/03/1996 |
| 5249689 | Handling and compacting of empty beverage cans A system for identification, separation and compacting of empty beverage cans including a first device for distinguishing between cans to be accepted and not accepted and rejecting non-acceptable cans, and for detecting at least one dimension of a can to ... | 10/05/1993 |
| 4830195 | High speed mechanical weighing system A high speed mechanical weighing system includes a series of article holders carried by chains and forming a flexible conveyor in which the holders are individually pivoted for movement between carrying and discharging positions. The mechanical weighing d... | 05/16/1989 |
| 4411366 | Device for grading products In a product grading apparatus in which the articles are conveyed in trays which are allowed to tilt downwardly at a discharge station to deposit an article onto an inclined chute leading to a support underlying the path of travel of the trays, each tray ... | 10/25/1983 |