Patents by Inventor Larry G. Petree

Larry G. Petree 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).

  • Exercise equipment employing fluid resistance suitable for use in spacecraft and other low gravity environments
    Patent number: 5190511
    Abstract: A simplified fluid flow resistance device and exercise equipment utilizing the same is disclosed. In a preferred embodiment, a rotating shaft is centered in a fluid filled sealed cylinder. A rotor is connected to the shaft and a baffle is connected to the internal wall of the cylinder. Rotation of the rotor in the cylinder drives fluid through bores in the baffle. Adjustable spring loaded ball valves are situated in at least two bores passing through the baffle so that resistance to fluid flow through the baffle in opposite directions can be controlled. The simplified design of the fluid flow resistance device of the present invention utilizes less materials so as to have minimal weight; thus the fluid resistance device is ideal for use in spacecrafts. Further, by use of spring loaded one way valves, the device can be used in any orientation, and a minimum resistance to motion of a lever arm connected to the fluid resistance device can be obtained.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: March 2, 1993
    Inventor: Larry G. Petree