Patents by Inventor Lindsay Hill

Lindsay Hill 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: 8371769
    Abstract: A control and a method of control for a machine that applies a material to a subgrade at a work site and pulls a floating screed, having a screed plate, over the top surface of the material behind the machine is useful in paving with asphalt material. The floating screed is attached to the machine by a tow arm at a tow point on said tow arm. The vertical height of the tow point is controlled by an hydraulic cylinder on said machine in response to a valve control signal applied to an hydraulic valve by a valve control drive. The screed determines the thickness of the material on the subgrade and is manipulated by adjusting the height of the tow point. A first sensor is mounted on the floating screed for sensing three-dimensional position. A second sensor for senses the pitch of said screed. A processor circuit is responsive to the first and second sensors for determining the height of the trailing edge of the screed plate and the movement of the screed over the top surface of the material.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: February 12, 2013
    Assignee: Caterpillar Trimble Control Technologies LLC
    Inventors: Andrew James Worsley, Jason Grier Lindsay Hill
  • Publication number: 20110255918
    Abstract: A control and a method of control for a machine that applies a material to a subgrade at a work site and pulls a floating screed, having a screed plate, over the top surface of the material behind the machine is useful in paving with asphalt material. The floating screed is attached to the machine by a tow arm at a tow point on said tow arm. The vertical height of the tow point is controlled by an hydraulic cylinder on said machine in response to a valve control signal applied to an hydraulic valve by a valve control drive. The screed determines the thickness of the material on the subgrade and is manipulated by adjusting the height of the tow point. A first sensor is mounted on the floating screed for sensing three-dimensional position. A second sensor for senses the pitch of said screed. A processor circuit is responsive to the first and second sensors for determining the height of the trailing edge of the screed plate and the movement of the screed over the top surface of the material.
    Type: Application
    Filed: April 14, 2010
    Publication date: October 20, 2011
    Applicant: CATERPILLAR TRIMBLE CONTROL TECHNOLOGIES LLC
    Inventors: Andrew James Worsley, Jason Grier Lindsay Hill
  • Publication number: 20080216430
    Abstract: A wall cladding and wall cladding system each comprising a plurality of panels, wherein opposing ends of each panel are substantially aligned with corresponding opposing ends of adjacent panels to form respective edges of an array of panels. Each panel includes at least one first recess in its first major face adjacent a first major edge configured in use to resemble a recessed mortar joint.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Inventors: James Gleeson, Darren Southwell, Lindsay Hill