Patents by Inventor David Coley

David Coley 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).

  • Control valve arrangements
    Patent number: 7832427
    Abstract: A valve arrangement includes a valve member, which rotates continuously in one sense. The generally cylindrical head of the valve member, within the housing, is formed to co-operate with various ports to create reciprocation in the actuator. It is preferred to provide some vibration of the valve member, to assist in overcoming the effects of friction.
    Type: Grant
    Filed: January 19, 2004
    Date of Patent: November 16, 2010
    Assignee: Aldridge Piling Equipment (Hire) Co. Ltd.
    Inventor: David Coley
  • Control valve arrangements
    Publication number: 20060118183
    Abstract: A valve arrangement includes a valve member, which rotates continuously in one sense. The generally cylindrical head of the valve member, within the housing, is formed to co-operate with various ports to create reciprocation in the actuator. It is preferred to provide some vibration of the valve member, to assist in overcoming the effects of friction.
    Type: Application
    Filed: January 19, 2004
    Publication date: June 8, 2006
    Inventor: David Coley
  • Actuator apparatus
    Patent number: 6786477
    Abstract: An actuator (10) for use in installing or extracting piles and the like has a common member (12) supported at (14) and having jaws (16) for gripping a pile. Within the block (12) a double-acting piston (18) is located alongside a space (20) for a control valve arrangement which provides hydraulic fluid, in various ways described, to create vibratory or impact forces from the piston (18). The piston and the valve arrangements are both removable and replaceable by alternatives, to modify the mode of operation of the actuator (10).
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: September 7, 2004
    Assignee: Aldridge Piling Equipment (Hire) Company Limited
    Inventor: David Coley