Patents by Inventor William L. Barrett

William L. Barrett 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: 4799672
    Abstract: A weightlifting apparatus operable to support a barbell comprising a pair of spaced-apart, substantially parallel vertical support members, each having an upper end and a lower end. A base supports the support members. Each support member bears synchronously and selectively movable, horizontally projecting spotting arms which are disposed in substantially the same horizontal plane. These support members are adapted to receive the barbell. Each spotting arm is coupled with a rod and cylinder assembly and each assembly is fluid actuable for synchronous movement of said spotting arms. An actuator or switch is provided for actuating said assemblies.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: January 24, 1989
    Inventor: William L. Barrett