Patents by Inventor Gregg Sheldon

Gregg Sheldon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4082306
    Abstract: An improved skateboard having a front platform separate and spaced from a rear platform. To each platform is attached a relatively conventional flexing wheel assembly with axle. In the first species of the invention the base plate of the wheel assemblies has resilient cushions mounted between the base plate of the wheel assemblies and the platforms. A torsion bar interconnects the base of the front wheel assemblies with the base of the rear wheel assemblies permitting rotary flexing between the two wheel assemblies. In the second species of the invention the torsion bar is connected to the pivotal collar of the shaft bushings rather than being connected directly to the base plates. To improve stability a support tubing is attached to the front and rear platforms and surround and encase the torsion bar. The support tubing maintains a front and rear platform in substantially constant spaced relationship.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: April 4, 1978
    Inventor: Gregg Sheldon