William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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 |
| 6178894 | Lateral control mount A mount for use in the suspension system of a railway truck that limits the relative lateral movement between a side frame member and a bearing adapter. In one embodiment, the mount includes a rigid material layer having at least four sections laterally a... | 01/30/2001 |
| 6006674 | Self-steering railway truck A railway truck includes a frame having a pair of side frames and laterally extending transoms therebetween. A plurality of journal boxes are resiliently suspended from the side frames and support a pair of longitudinally spaced apart end axles extending ... | 12/28/1999 |
| 4947761 | Stub axle truck A truck having a pair of wheels mounted by individual stub axles to longitudinal members of a frame. Lateral members of the frame received the forces from the wheels via the longitudinal members and forces from the car via air springs mouted to the latera... | 08/14/1990 |
| 4883000 | Stub axle truck A truck having a pair of wheels mounted by individual stub axles to longitudinal members of a frame. Lateral members of the frame received the forces from the wheels via the longitudinal members and forces from the car via air springs mounted to the later... | 11/28/1989 |
| 4554875 | Pedestal tie bar arrangement A railway truck pedestal has a pedestal tie bar irremovably secured to one of the pedestal legs but arranged for easy movement between open and closed positions. The tie bar is of generally I-shape in plan and it is slidably mounted in channel-shaped sadd... | 11/26/1985 |
| 4546706 | Equipment mounting structure for inside bearing railway car trucks For supporting equipment which must be maintained at constant height above the rails, such as third rail collection gear, on inside bearing trucks in which the truck frame is spring-supported from journal boxes vertically movably mounted in downwardly ope... | 10/15/1985 |
| 4179995 | Snubbed railroad car truck A truck for a railroad car includes two spaced side frames which resiliently support ends of a transversely positioned bolster in a window formed in each side frame. On each side of the bolster is a vertical recess formed having opposing convex-shaped sid... | 12/25/1979 |
| 4170180 | Pedestal wear liner assembly A pedestal assembly for use in a railroad vehicle having a journal box which slides vertically with respect to the pedestal assembly, said assembly including a pedestal liner consisting of elastomer having a wear face and a non-wear face, said wear face c... | 10/09/1979 |
| 4168666 | Railway truck floating pedestal liner A floating pedestal liner for railroad trucks and a method for its mounting are disclosed in which the liner is restricted from moving in a vertical direction but is free to move in a horizontal plane either laterally or longitudinally.... | 09/25/1979 |
| 4094253 | Railway truck floating pedestal wear liner A pedestal liner for railroad trucks is disclosed in which the liner is not bolted to the pedestal leg, but instead is allowed to "float" -- that is, to move relative both to the journal box and to the pedestal leg.... | 06/13/1978 |
| 4044689 | Resiliently railway truck suspension Axle journal bearing mounting for railway truck having travel weave taken in elastomeric mounting bushing or sleeve elements surrounding the roller bearing assembly in which the outer bearing ring element, elastomeric bushing component and clamping means ... | 08/30/1977 |
| 4043273 | Alternatively usable sling and key roller bearing retainers A pedestal type side frame for a railway truck selectively having a sling type axle bearing retainer and a key-type axle bearing retainer. The pedestal includes a pair of depending legs defining a downwardly opening jaw for receiving an axle roller bearin... | 08/23/1977 |