Patents by Inventor Ibrahim A. Abdelrahman

Ibrahim A. Abdelrahman 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).

  • SELF-ASSEMBLED HIERARCHICAL POROUS Pd@PdPt YOLK-SHELL NANOARCHITICTONICS AND HOLLOW PdPt NANOCAGES HYDROGEN SENSORS
    Publication number: 20230391612
    Abstract: Described herein are hierarchical porous Pd@PdPt yolk-shell nanoarchitectonics and hollow PdPt nanocages hydrogen sensors, methods of producing the hydrogen sensors, and methods of using the sensors to detect H2 under ambient conditions.
    Type: Application
    Filed: June 1, 2023
    Publication date: December 7, 2023
    Inventors: Kamel Abdelmoniem Mohamed EID, Belal Salah Mohammed HUSSIEN, Aboubakr Moustafa ABDULLAH, Ahmad Ibrahim Abdelrahman AYESH
  • Pumping element for hydraulic pump
    Patent number: 6974312
    Abstract: A pumping element for a hydraulic pump is provided. The pumping element includes a cylinder forming a compression chamber and having a discharge port. A piston having a pressure surface, a spill port, and a passageway connecting the pressure surface with the spill port is disposed in the cylinder for reciprocal movement between a first position and a second position. The pressure surface of the piston is adapted to increase the pressure of a fluid disposed in the compression chamber as the piston moves between the first position and the second position. The pressurized fluid flows through the discharge port of the cylinder. A metering sleeve is disposed around the piston and is configured to selectively cover the spill port as the piston reciprocates between the first and second positions. The metering sleeve has a groove that is adapted for fluid communication with the spill port as the piston reciprocates between the first and second positions.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: December 13, 2005
    Assignee: Caterpillar Inc.
    Inventors: Ibrahim A. Abdelrahman, Dennis H. Gibson
  • Pumping element for hydraulic pump
    Publication number: 20040115066
    Abstract: A pumping element for a hydraulic pump is provided. The pumping element includes a cylinder forming a compression chamber and having a discharge port. A piston having a pressure surface, a spill port, and a passageway connecting the pressure surface with the spill port is disposed in the cylinder for reciprocal movement between a first position and a second position. The pressure surface of the piston is adapted to increase the pressure of a fluid disposed in the compression chamber as the piston moves between the first position and the second position. The pressurized fluid flows through the discharge port of the cylinder. A metering sleeve is disposed around the piston and is configured to selectively cover the spill port as the piston reciprocates between the first and second positions. The metering sleeve has a groove that is adapted for fluid communication with the spill port as the piston reciprocates between the first and second positions.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Inventors: Ibrahim A. Abdelrahman, Dennis H. Gibson