Patents by Inventor Marvin A. Joanis, Jr.

Marvin A. Joanis, Jr. 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).

  • Multiple groove variable pitch pulley system
    Patent number: 4725258
    Abstract: A multiple groove, variable pitch pulley comprises an annular hub threaded about its exterior surface. A stationary end flange is mounted at one end of the hub and a movable end flange is threaded onto the other end of the hub. One or more center flanges are threaded into the hub and lie between the stationary end flange and the movable end flange. The center flanges comprise a disk section and a collar section of lesser diameter than the disk section. The disk section of each center flange and the movable end flange each comprises an axial counterbore for receiving the collar section of an adjacent center flange.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: February 16, 1988
    Assignee: T & M Grinding Corp.
    Inventor: Marvin A. Joanis, Jr.