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 |
| 6893099 | Tailgate A tailgate for use with a vehicle having a chassis and a truck bed. The truck bed has an inside surface and an outside surface. The tailgate may include a pair of mounting blocks positioned on the outside surface of the truck bed. Each of the mounting blocks may inc... | 05/17/2005 |
| 6491349 | In-service/out-of-service rotatable tailgate assembly An improved tailgate assembly for a truck body is provided. The tailgate assembly including a gate portion that is pivotally supported between a pair of opposing side beams for movement relative to the side beams between an operative and an inoperative po... | 12/10/2002 |
| 5887914 | Vehicle in-service/out-of-service rotatable tailgate mechanism A load-carrying body for a truck is provided that includes a tailgate assembly positionable between in-service and out-of-service positions for hauling materials of different densities while maintaining a controlled distribution of the weight of the load ... | 03/30/1999 |
| 5249843 | No-bounce tailgate assembly In a tailgate assembly, a locking mechanism for preventing rotation of the assembly in response to a torque generated by a moment arm of the tailgate assembly and a force resulting from the jolting of the truck as it travels over rough terrain.... | 10/05/1993 |
| 5174632 | No-bounce tailgate assembly In a tailgate assembly, a locking mechanism for preventing rotation of the assembly in response to a torque generated by a moment arm of the tailgate assembly and a force resulting from the jolting of the truck as it travels over rough terrain.... | 12/29/1992 |
| 5092656 | Automatic latching device for tailgate A dump truck is provided with a dump body having a tailgate. A lever arm having a first end and a second end is pivotably attached to the dump body. The first end is fixedly attached to the tailgate and the second end is attached to a latching device whic... | 03/03/1992 |
| 4710087 | Bale accumulator and discharger A bale accumulator is provided for use in conjunction with a baler from which, during operation, bales successively are discharged. The accumulator comprises a bale receiving table movable between a home position for receiving a bale from the baler and a ... | 12/01/1987 |
| 4569187 | Grass and leaf catching apparatus A grass catcher for receiving grass clippings and leaves from a rotary deck mower towed by a tractor. A fan driven by the mower forces the clippings through a flexible hose leading to a large capacity hopper. The hopper is mounted on a carriage having a s... | 02/11/1986 |
| 4141581 | Truck box liner A liner for a truck box for increasing the volumetric load carrying capacity thereof. The liner is provided with wall portions extending higher than the walls which form the truck box. The liner has a tail gate which opens automatically as the truck box i... | 02/27/1979 |
| 4099285 | High lift surface maintenance machine A surface maintenance machine that includes a powered vehicle having a rotary tool in a tool enclosure to direct debris from the surface through an enclosure outlet, a debris hopper having a debris inlet locatable adjacent the enclosure outlet, and a disc... | 07/11/1978 |
| 3998491 | Forage trailer The invention comprises a forage trailer. The trailer has an upper and lower frame with a scissor mechanism to raise and lower the upper frame. The lower frame has wheels thereon for towing. The upper frame has a box pivotally mounted to one side of the u... | 12/21/1976 |
| 3993353 | Farm wagon vehicle An all purpose wagon vehicle for general farm use, including an undercarriage frame on which is provided a dump box having a floor and fixed front and side walls standing thereover, with the dump box being tiltable on the undercarriage frame to discharge ... | 11/23/1976 |