Patents by Inventor Steven L. Dickson

Steven L. Dickson 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: 4328603
    Abstract: A street sweeping vehicle with a single engine both for the purpose of propulsion and generation of hydraulic power. The hydraulic power is used to drive individual hydraulic motors controlling the main broom, gutter broom and debris elevating system. Each separate hydraulic motor is so positioned as to operate effectively while accomodating various drine positions, yet minimizing wear and tear on the mechanism driven.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: May 11, 1982
    Inventors: Donald L. Dickson, Steven L. Dickson
  • Patent number: 4320552
    Abstract: A street sweeping vehicle with a main broom driven by a hydraulic motor whose output shaft is axially aligned with and rigidly coupled to one end of the broom shaft. The motor housing is supported against rotation by an auxiliary housing that is also pivotally secured to the rearward end of an associated broom support arm such that the auxiliary housing is able to rotate about the longitudinal axis of the support arm, and such that the longitudinal axis of the support arm intersects the longitudinal axis of the broom shaft.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: March 23, 1982
    Inventors: Donald L. Dickson, Steven L. Dickson
  • Patent number: 4308632
    Abstract: A street sweeping vehicle has a motor and drive system for propelling it forward. It also has several auxiliary devices including a main broom, a gutter broom, and a debris elevating system, each of which is powered by a separate hydraulic motor. Each hydraulic motor receives its energy from a pump that is in turn driven by a main motor of the vehicle. In each auxiliary device, the separate hydraulic motor which powers that device is so positioned as to operate effectively while permitting necessary position adjustments of the driven mechanism to take place and also minimizing wear and tear on the mechanism.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: January 5, 1982
    Inventors: Donald L. Dickson, Steven L. Dickson