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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7137675 | Road wheel for tracked vehicles A hollow-shell road wheel for tracked vehicles includes a generally triangular, outer circumferential cavity formed by an outer rim and two wall members that extend radially inward at angles to a generally planar flange at approximately the mid-radius point of the h... | 11/21/2006 |
| 6935667 | Wheels for a wheeled vehicle A wheel assembly for a wheeled vehicle utilizes interchangeable wheel hubs to secure various types of tires to provide better performance and maintenance on the vehicles. The design of the hubs is such that fabrication costs are reduced as well as costs for maintain... | 08/30/2005 |
| 5826948 | Two-piece plastic wheel for lightweight automobiles A wheel for a lightweight plastic automobile includes a unitarily-molded outboard plastic rim defining an inboard-oriented engagement surface and a unitarily-molded inner plastic rim defining an outboard-oriented engagement surface. The engagement surface... | 10/27/1998 |
| 5782540 | Plastic wheel and method of making same A plastic wheel assembly comprises a wheel, a hub assembly and a rim having two side walls adopted to hold a tire onto the rim. Preferably the wheel is made of two molded plastic wheel halves, each having a wheel flange extending outwardly from the circum... | 07/21/1998 |
| 5533793 | Agricultural tires and wheel assemblies therefore An agricultural wheel assembly constructed of a plastic wheel half and a metal half releasably secured together for use with agricultural row crop planters and grain drills. The plastic wheel half has a smooth flat or shallow cup for eliminating the probl... | 07/09/1996 |
| 5328252 | Quick change wheel and drive assembly for passenger boarding bridges A wheel assembly and power drive train for use with passenger boarding bridges having a ramp drive system. The wheel assembly includes a wheel rim which is releasably attached to a wheel hub to allow removal of the wheel rim and associate tire without dis... | 07/12/1994 |
| 5234259 | Resin wheel with more than two independently molded parts A resin wheel consisting of two or more molded parts coupled together. The parts are molded separately and have threaded portions. Then, the threaded portion of one molded part is screwed into the threaded portion of the other molded part so that the part... | 08/10/1993 |
| 4944563 | Wheel assembly including a solid tire A wheel assembly incorporating a solid tire having a controlled deflection under load. A wheel assembly (20,200) includes a solid tire (22,202) mounted on a rim (24,204). The rim includes a plurality of axial grooves (68), radial grooves (60), or "U" shap... | 07/31/1990 |
| 4696520 | Running wheel for track vehicles In a running wheel for track vehicles comprising two discs (1) which leave free a guide gap (11) for the chain teeth (10) and which terminate in a cylindrical region (2) with rubber coating (3) disposed at the outer periphery, to reduce the material stres... | 09/29/1987 |
| 4538657 | Wheel for land vehicles and method for moving such vehicles over soft or irregular surfaces A wheel is disclosed for use on land vehicles such as small manually drawn trailers and similar carriers, the wheel having a tire supporting rim (12) and a low pressure tire (48) engaging the rim, the tire comprising a thin walled torus (50) of elastomeri... | 09/03/1985 |
| 4488761 | Wheel disc brake In a combined wheel-disc assembly, the wheel disc surface is used as a brake rotor. The need for a separate disc rotor is eliminated and the assembly provides a large area for brake contact and desirable air cooling of the braking surface. Braking forces ... | 12/18/1984 |
| 4422490 | Vehicle road wheels and tires A vehicle road wheel is disclosed having a safety groove adjacent its outboard rim edge but so as to be within a tire fitted to the wheel and within which a flexible band is fitted so that a tire fitted to the wheel has it outboard bead embraced between t... | 12/27/1983 |
| 4193639 | Mountable wheel for toy vehicle A wheel suitable for use on toy vehicles. The wheel has a tire which is mountable and demountable with respect to such toy vehicle. The wheel includes a first member that is rotatably mounted in a permanent or semi-permanent arrangement on an axle. The wh... | 03/18/1980 |
| 4105254 | Wheel with rim embraced by tire A wheel for use with a tire whose sidewalls are to be maintained in a mechanically compressed condition when it is mounted on the wheel comprises a central disc for attachment to a vehicle, a pair of circumferentially extending radially outwardly facing s... | 08/08/1978 |
| 3993356 | Track carrying wheels for crawler type vehicles having improved panel assemblies A wheel for carrying continuous track of crawler type vehicles has a set of spaced pairs of inner and outer panel members that are connected together through vibration barriers. One of the inner or outer panels is formed of a laminate.... | 11/23/1976 |
| 3976116 | Rim constructions A rim for a pneumatic tire carcass has a pair of rim portions which are securable together to form such rim. One rim portion is integral with a wheel hub and includes a plurality of pockets or guide openings formed therein. The other rim portion includes ... | 08/24/1976 |
