Patents by Inventor Douglas J. Calvert

Douglas J. Calvert 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).

  • Gauge with illuminated dial and pointer
    Patent number: 6663251
    Abstract: A gauge with a light-transmitting dial plate having a front surface with indicia for a variable represented by the dial, at least one light source spaced rearwardly from the rear surface of the dial plate for illuminating the dial plate, and a light-transmitting pointer mounted for rotational movement about an axis normal to the dial plate. The pointer has a hub concentric with the axis, extending through the dial plate and projecting both forwardly and rearwardly from the plate, and an indicator projecting laterally from the hub across a portion of the front surface of the dial plate. The portion of the hub extending rearwardly of the dial plate is shaped to capture light directly from the light source so that light enters the hub and propagates forwardly through the hub, and then laterally from the hub into the indicator to illuminate the indicator.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: December 16, 2003
    Assignee: Auto Meter Products, Inc.
    Inventor: Douglas J. Calvert
  • GAUGE WITH ILLUMINATED DIAL AND POINTER
    Publication number: 20030202335
    Abstract: A gauge with a light-transmitting dial plate having a front surface with indicia for a variable represented by the dial, at least one light source spaced rearwardly from the rear surface of the dial plate for illuminating the dial plate, and a light-transmitting pointer mounted for rotational movement about an axis normal to the dial plate. The pointer has a hub concentric with the axis, extending through the dial plate and projecting both forwardly and rearwardly from the plate, and an indicator projecting laterally from the hub across a portion of the front surface of the dial plate. The portion of the hub extending rearwardly of the dial plate is shaped to capture light directly from the light source so that light enters the hub and propagates forwardly through the hub, and then laterally from the hub into the indicator to illuminate the indicator.
    Type: Application
    Filed: April 26, 2002
    Publication date: October 30, 2003
    Inventor: Douglas J. Calvert