Patents by Inventor David Frank Bailes

David Frank Bailes 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).

  • Hydraulic reservoir with a vortex for deaeration of the hydraulic oil
    Patent number: 10975892
    Abstract: A hydraulic reservoir (10), for use for example in a marine pleasure craft, comprises a vortex chamber (16), a hydraulic fluid return line (18) and a hydraulic fluid suction line (20) respective entering and exiting substantially tangentially to an internal wall surface of the vortex chamber. An upper chamber (26) is disposed above the vortex chamber (16) and in fluid communication with the vortex chamber. The upper chamber is capable of expansion and/or contraction in use in order to adjust continuously to the volume of the hydraulic fluid to be accommodated in the hydraulic reservoir. Also disclosed is a method of operating such a hydraulic reservoir, in which hydraulic fluid is directed into the vortex chamber (16) along the hydraulic fluid return line (18) and extracting hydraulic fluid from the vortex chamber along the hydraulic fluid suction line (20), to thereby generate a vortex flow in the vortex chamber. Dissolved air, if present, becomes entrained into bubbles which rise to the upper chamber (26).
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: April 13, 2021
    Assignee: LEWMAR LIMITED
    Inventor: David Frank Bailes
  • HYDRAULIC RESERVOIR WITH A VORTEX FOR DEAERATION OF THE HYDRAULIC OIL
    Publication number: 20190285092
    Abstract: A hydraulic reservoir (10), for use for example in a marine pleasure craft, comprises a vortex chamber (16), a hydraulic fluid return line (18) and a hydraulic fluid suction line (20) respective entering and exiting substantially tangentially to an internal wall surface of the vortex chamber. An upper chamber (26) is disposed above the vortex chamber (16) and in fluid communication with the vortex chamber. The upper chamber is capable of expansion and/or contraction in use in order to adjust continuously to the volume of the hydraulic fluid to be accommodated in the hydraulic reservoir. Also disclosed is a method of operating such a hydraulic reservoir, in which hydraulic fluid is directed into the vortex chamber (16) along the hydraulic fluid return line (18) and extracting hydraulic fluid from the vortex chamber along the hydraulic fluid suction line (20), to thereby generate a vortex flow in the vortex chamber. Dissolved air, if present, becomes entrained into bubbles which rise to the upper chamber (26).
    Type: Application
    Filed: November 8, 2017
    Publication date: September 19, 2019
    Inventor: David Frank Bailes