Patents by Inventor William Doak

William Doak 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).

  • System and method for improving lift cylinder buckling resistance
    Patent number: 10435280
    Abstract: A lift truck can include a mast and a lift cylinder. The lift cylinder can include a piston rod and a cylinder housing. The lift truck also can include a piston rod retention mechanism that restricts movement of the lift cylinder in a direction lateral to an axial direction when the mast is in an extended position.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: October 8, 2019
    Assignee: The Raymond Corporation
    Inventors: Fernando D Goncalves, William Doak, Paul F Finnegan
  • Caster wheel with constant force mechanism
    Patent number: 9593003
    Abstract: A wheel assembly for a material handling vehicle includes a chassis, a first caster wheel mounted to the chassis, a second caster wheel mounted to the chassis, a torsion bar coupling the first caster wheel to the second caster wheel, and a constant force mechanism coupled to at least one of the first caster wheel, the second caster wheel and the torsion bar. The first and second caster wheels are displaceable in at least one dimension, and the constant force mechanism imparts a substantially constant force opposing a displacement in the at least one dimension.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: March 14, 2017
    Assignee: The Raymond Corporation
    Inventors: Fernando D. Goncalves, Paul F. Finnegan, Greg Sigman, Michael V. Brown, William Doak
  • CASTER WHEELS WITH TORSION SPRING ASSEMBLY
    Publication number: 20160340162
    Abstract: A wheel assembly for a material handling vehicle includes a chassis, a first caster wheel mounted to the chassis, a second caster wheel mounted to the chassis, a torsion bar coupling the first caster wheel to the second caster wheel, and a torsion spring coupled to the torsion bar.
    Type: Application
    Filed: August 3, 2016
    Publication date: November 24, 2016
    Inventors: ADAM WAYNE STANDARD, FERNANDO GONCALVES, GREG SIGMAN, MICHAEL V BROWN, WILLIAM DOAK
  • SYSTEM AND METHOD FOR IMPROVING LIFT CYLINDER BUCKLING RESISTANCE
    Publication number: 20160039649
    Abstract: A lift truck can include a mast and a lift cylinder. The lift cylinder can include a piston rod and a cylinder housing. The lift truck also can include a piston rod retention mechanism that restricts movement of the lift cylinder in a direction lateral to an axial direction when the mast is in an extended position.
    Type: Application
    Filed: August 6, 2015
    Publication date: February 11, 2016
    Inventors: Fernando D. Goncalves, William Doak, Paul F. Finnegan
  • CASTER WHEEL WITH CONSTANT FORCE MECHANISM
    Publication number: 20150274496
    Abstract: A wheel assembly for a material handling vehicle includes a chassis, a first caster wheel mounted to the chassis, a second caster wheel mounted to the chassis, a torsion bar coupling the first caster wheel to the second caster wheel, and a constant force mechanism coupled to at least one of the first caster wheel, the second caster wheel and the torsion bar. The first and second caster wheels are displaceable in at least one dimension, and the constant force mechanism imparts a substantially constant force opposing a displacement in the at least one dimension.
    Type: Application
    Filed: May 1, 2014
    Publication date: October 1, 2015
    Inventors: Fernando D. Goncalves, Paul F. Finnegan, Greg Sigman, Michael V. Brown, William Doak
  • Apparatus and method for decreasing water vapor in compressed gas
    Patent number: 6758883
    Abstract: An apparatus for decreasing water vapor in a compressed gas, such as compressed air, using cooling. A pipe, tapered or not, is attached to the air inlet port of the main gas compressor tank, or in a secondary tank or other downstream device, such that the compressed gas is forced through the pipe and onto a heat conductive plate, where water vapor condenses and is drained away.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: July 6, 2004
    Inventors: George William Doak, Kenneth William Doak
  • Apparatus and method for decreasing water vapor in compressed gas
    Publication number: 20040055466
    Abstract: An apparatus for decreasing water vapor in a compressed gas, such as compressed air, using cooling. A pipe, tapered or not, is attached to the air inlet port of the main gas compressor tank, or in a secondary tank or other downstream device, such that the compressed gas is forced through the pipe and onto a heat conductive plate, where water vapor condenses and is drained away.
    Type: Application
    Filed: September 23, 2002
    Publication date: March 25, 2004
    Inventors: George William Doak, Kenneth William Doak