Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7832745 | Single caster wheel assembly for trailer towable at high speeds A trailer wheel assembly for mounting on the rear of a trailer has a structure that reduces or prevents oscillations about a vertical axis arising during high speed towing. The structure includes dual wheels mounted on an axle, a resilient support, and a suspension ... | 11/16/2010 |
| 7077220 | Tractor with rear castor wheels A hydrostatic agricultural tractor has front ground wheels mounted on the frame at fixed angles parallel to each other and parallel to a center line of the frame and rear ground wheels mounted on a respective castor, with each of the front ground wheels being driven... | 07/18/2006 |
| 6938300 | Wheel assembly for a stroller A wheel assembly for a stroller includes a wheel with a rim that has two vertical side surfaces and a vertical central plane. A vertical pivot shaft is disposed within a mounting space in the wheel, is located in the central plane, and extends through a fixed seat t... | 09/06/2005 |
| 6854745 | Baby-carriage with steerable wheels A hand-propelled vehicle for passenger transport, in particular a pushchair, includes a chassis with at least three wheels, at least two of which are pivotally connected to the chassis, wherein the pivotable wheels are connected by at least one shaft which is pivota... | 02/15/2005 |
| 6843349 | Trolley wheel mechanism A trolley wheel mechanism has two caster wheel assemblies each having a pair of wheels mounted on a rotatable housing. In a free mode the wheels are free to both rotate and to swivel. This is caused by the user pressing a release pedal. In a unidirectional mode a re... | 01/18/2005 |
| 5492351 | Axle construction for a vehicle An axle construction for a vehicle has a rigid axle and wheels mounted at opposite ends of the rigid axle. Supports respectively at the opposite ends of the rigid axle respectively support opposite sides of a chassis frame of the vehicle from the rigid ax... | 02/20/1996 |
| 5221100 | Trailer frame with stabilized caster swivel A cargo trailer for towing behind another vehicle has a cargo container platform and a stabilized caster swivel assembly supporting the cargo container platform. The swivel assembly includes an elongated frame, a caster wheel on a swivel member being rota... | 06/22/1993 |
| 4410194 | Caster wheel brake For an implement, a caster wheel assembly including a tubular member connected to reciprocate as the caster wheel swivels. An adjustable brake assembly resists movement of the tubular member to eliminate caster wheel wobble as the implement is transported... | 10/18/1983 |
| 4390189 | Self-steering bogies for trailers The load of a trailer is applied to lower members of shackles that have upper members rigidly attached to axle housings of tandem axle assemblies. Linkages and levers are connected between a lower pivotal member of a swivel assembly supporting the load an... | 06/28/1983 |
| 4195858 | Steering linkages and vehicles incorporating them A steering linkage for a pair of wheels with upright pivot axes is comprised of links and pivots. Torque can be applied to each wheel via a pivotal connection to an intermediate link when control links are pivoted about their fixed pivots by a drive appli... | 04/01/1980 |
| 4161325 | Supplementary support for vehicles A removable frame for reduction of axle loads for heavy vehicles is disclosed herein. The frame includes a pair of lever arms pivoted to each other at one end with adjustable biasing means between the free ends of the lever arms. One of the lever arms has... | 07/17/1979 |
| 4154451 | Control wheel A control wheel for an agricultural machine of the folding type in which the wings fold to trail behind a central section. The control wheel comprises a castor wheel coupled with tensioning devices which enable the wheel to track normally while folding or... | 05/15/1979 |
