Patents by Inventor Douglas S. Guy

Douglas S. Guy 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).

  • Publication number: 20040099453
    Abstract: A motorized lift truck includes a coast mode of operation in which the vehicle can be operated while the operator walks alongside the vehicle. The coast mode can be activated from either of a walking or a riding position. An indicator device, such as an indicator light, is provided to alert the operator when the lift truck is operated in the coast mode.
    Type: Application
    Filed: November 26, 2002
    Publication date: May 27, 2004
    Inventor: Douglas S. Guy
  • Patent number: 5964313
    Abstract: The present invention is directed to an improved motion control system for a motorized hand/rider lift truck having a load bearing fork, electric traction motor, storage battery, steerable wheel, steering control mechanism, and a brake that includes a deadman brake mechanism. An electrical power circuit comprises a high speed control circuit and a low speed control circuit that control, respectively, a high speed travel mode and a low speed travel mode of the truck. The improved motion control system of the invention further comprises means for selecting the high or low speed travel mode and means for actuating an automatic coast control device that automatically overrides the deadman brake mechanism while the truck is in the low speed travel mode and deactivates the coast control device when the truck is in the high speed travel mode.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: October 12, 1999
    Assignee: Raymond Corporation
    Inventor: Douglas S. Guy