Patents by Inventor Harbhajan S. Mahal

Harbhajan S. Mahal 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).

  • Regeneration system for a hydraulic intensifier unit
    Patent number: 4555220
    Abstract: A hydraulic intensifier for oil well fracturing and/or erosion drilling, having a pair of intensifier units including a pair of sequentially operated reciprocating ram assemblies powered by hydraulic cylinder motors which are operated to maintain a substantially uniform output fluid pressure from the intensifier unit. Each cylinder motor is supplied from a main source of hydraulic fluid under high pressure which operates on the working faces of the pistons of the cylinder motors. Hydraulic fluid is also supplied to the return face side of each piston in the hydraulic cylinder motor.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: November 26, 1985
    Assignee: Towler Hydraulics, Inc.
    Inventors: Richard W. Hall, Sven Sonnenberg, Harbhajan S. Mahal