Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7963618 | Systems and methods for providing aircraft runway guidance There is presented a system and method for providing aircraft runway guidance. One delineated runway alert system for a host aircraft comprises: a processor for executing one or more instructions that implement one or more functions of the runway alert system; a dat... | 06/21/2011 |
| 7416261 | Quick change adjustable track center front hub assembly and method of use The quick-change adjustable track center front hub assembly is secured to a spindle axle of a sprint car by a friction drive bearing system located between the spindle axle and the front hub assembly. The bearings are spaced apart to provide increased side and torsi... | 08/26/2008 |
| 5839795 | Variable outer diameter wheel for vehicles A variable outer diameter wheel includes a generally cylindrical pipe or drum having four equally spaced penetrating holes or receiving parts in the cylindrical wall, a diaphragm sealing member corresponding to each of the penetrating holes and fitted to ... | 11/24/1998 |
| 4178042 | Variable-track wheels Agricultural tractors having variable-track wheels for working in different conditions, particularly in row-crops, are known. The track-width of their driving wheels has sometimes been made power-adjustable by fixing brackets having respective grooves on ... | 12/11/1979 |
| 4046339 | Landing gear for an aircraft including expansible wheels An auxiliary landing gear for an aircraft including a pair of auxiliary wheels mounted from the wings and including an exterior rim composed of segments connected to a hub by expansible members whereby expansion from a collapsed inoperative disposition to... | 09/06/1977 |
| 4023511 | Seed planting roller device An improved seed planting roller for planting seeds in individual holes in the ground, and having means for reclosing the hole over the planted seed. Also, means are shown for altering the circumference of the roller for adjustment of planted seed spacing... | 05/17/1977 |
| 3998258 | Expandable tire rim arrangement and method of installation An expandable tire rim arrangement is disclosed including a transversely split tire supporting rim having an outer peripheral tire engaging surface, an inner peripheral surface, and relatively circumferentially movable ends disposable between a rim diamet... | 12/21/1976 |
