Patents by Inventor Vincent J. McGrath

Vincent J. McGrath 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).

  • Roller assembly with relative tolerance mountings
    Patent number: 5099559
    Abstract: A roller comprises an axle (2), a pair of inner collars (3) one adjacent each end of the axle, a bearing (4, 5) mounted on each inner collar (3), an outer collar (6) mounted on each bearing, and a cylindrical member (7) mounted on and spanning the outer collars. The fit of the inner collar (3) onto the axle (2) is relatively loose or of high tolerance, relative to the fit of the collars (3, 6) onto the bearing (4, 5). Preferably the inner collars (3) are rebated (22), so that parts of the inner collar remain substantially clear of the axle (2).
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: March 31, 1992
    Assignee: McGrath Industries Limited
    Inventor: Vincent J. McGrath
  • Apparatus to facilitate movement of objects over a surface
    Patent number: 5094341
    Abstract: An apparatus for efficiently moving containers, cargo and similar objects (39) over a surface includes two parallel chains (1, 2) of links (3) with rollers (4, 5) perpendicular to and attached between the chains, alternate rollers projecting upwardly (4) and downwardly (5), respectively. The apparatus is preferably provided in association with a retrieving and dispensing apparatus (27, 28, 29, 31) so that the rollers can be positioned on a surface (32) and removed therefrom.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: March 10, 1992
    Assignee: McGrath Industries Limited
    Inventor: Vincent J. McGrath