Patents by Inventor Richard H. Stone

Richard H. Stone 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: 4637627
    Abstract: A vehicle such as a 6.times.2 tractor having at least three axles is provided with a novel leaf spring suspension (1) for its middle axle. When the load, imposed on the chassis by a semi-trailer, exceeds a predetermined threshold, the free, rear, end of the leaf spring (1) engages the under-surface of the upper portion of a slipper bracket (4) attached to the chassis, and the middle axle takes a proportion of the load. With loads below the threshold, the free end drops through a vertical "air gap" and is held by a lower supporting arm on the slipper bracket, the middle axle being unloaded. The rear, driving, axle is thus more heavily loaded whenever the vehicle is part-laden, ensuring greater traction.
    Type: Grant
    Filed: February 16, 1984
    Date of Patent: January 20, 1987
    Assignee: Leyland Vehicles Limited
    Inventor: Richard H. Stone
  • Patent number: 4242152
    Abstract: A laser is used to cut slots into a film deposited on a substrate so that a clean kerf is produced without harming the substrate. The laser cut vaporizes the film material as the removal mechanism and some of the vaporized material will redeposit over the surface of the film adjacent to the kerf. When the redeposited material is illuminated and viewed obliquely a series of light fringes can be observed. The laser focus is adjusted until the fringe pattern is symmetrical about the kerf. The laser power is adjusted until the fringes extend to about three times the kerf width on both sides of the kerf. This provides a precision nonsubjective means for adjusting laser focus and power.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: December 30, 1980
    Assignee: National Semiconductor Corporation
    Inventor: Richard H. Stone