Patents by Inventor Dafydd W. Evans

Dafydd W. Evans 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).

  • Patent number: 4109748
    Abstract: Steering apparatus is provided for a vehicle which has a steering axle assembly which is movable between a first position at which the turning radius in a first direction of the vehicle is at a preselected minimum value, a second position at which the turning radius of the vehicle is infinite, and a third position at which the turning radius in a second direction of the vehicle is at a preselected minimum value. The second position is intermediate the first and third positions. The steering apparatus controls the turning radius of the vehicle in response to a predetermined operational rate by automatically restricting the movement of the steering axle assembly towards the first and third positions while leaving the steering axle assembly free for movement towards the second position.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: August 29, 1978
    Assignee: Towmotor Corporation
    Inventor: Dafydd W. Evans
  • Patent number: 4059281
    Abstract: A fluid tank apparatus has mounting structure including linkage assemblies for moving the tank between first and second positions in response to moving a pivotally movable structure of the vehicle. The mounting structure is of a construction sufficient for maintaining the tank at substantially a preselected attitude at and between said first and second tank positions.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: November 22, 1977
    Assignee: Towmotor Corporation
    Inventor: Dafydd W. Evans
  • Patent number: 4033424
    Abstract: An article hold-down device is disclosed which is capable of restraining movement of a heavy article away from a supporting platform. The hold-down device includes a lower clamping member adaptable to be secured to the platform, an upper clamping member having a projection thereon adaptable to be positioned into a close overlapping orientation with respect to the article, and a coupling member for quickly permitting vertical adjustment of the upper clamping member on the lower clamping member and for positively connecting the clamping members together upon reaching the close, overlapping orientation and to provide a secured condition of the article. The hold-down device is particularly adaptable to restrain vertical movement of a battery on a vehicle.
    Type: Grant
    Filed: April 9, 1976
    Date of Patent: July 5, 1977
    Assignee: Towmotor Corporation
    Inventor: Dafydd W. Evans
  • Patent number: 3997029
    Abstract: An improved hoisting arrangement is provided for raising and lowering a load supporting carriage upon a front lift mast of an industrial lift truck which arrangement removes the normally vertically disposed carriage hoisting jack from between the upright channel members of the lift mast and positions such jack in a horizontal, rearwardly extending relation with respect to such lift mast so as to provide the lift truck operator with greater forward visibility.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: December 14, 1976
    Assignee: Towmotor Corporation
    Inventor: Dafydd W. Evans