Patents by Inventor David F. Cerqua

David F. Cerqua 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).

  • Shock and vibration isolating caster suspension
    Patent number: 5493755
    Abstract: A caster has a stationary hub with a bearing between the hub and a floor engaging wheel ring which allows the wheel ring to rotate relative to the hub. Torsional elastomeric elements mount the hub between spaced support arms radially inward of the bearing and are positioned eccentrically relative to the axis of rotation of the wheel ring so as to suspend the hub resiliently between the arms. In an alternate embodiment, the hub is cantilevered from a single support arm.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: February 27, 1996
    Assignee: Applied Power Inc.
    Inventors: Daniel H. Kindstrand, David F. Cerqua, Paul R. Gagnon
  • Shock and vibration isolating caster
    Patent number: 5305496
    Abstract: A caster has two spaced apart wheels with an elastomeric torsional shock and vibration isolating suspension between them. The wheel axis is spaced longitudinally from a bearing axis to subject elastomeric disks positioned between the wheels to torsional shear stresses to help absorb shocks and vibrations. A snubber is provided for limiting the angular motion of the wheels about a bearing axis.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: April 26, 1994
    Assignee: Applied Power Inc.
    Inventors: Paul R. Gagnon, David F. Cerqua