Patents by Inventor Gamil M. Rizk

Gamil M. Rizk 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: 7195226
    Abstract: A valve includes a valve body, a flux tube, and a winding. The body defines first and second passageways, and a circular opening is defined in the second passageway providing fluid communication between the passageways. The flux tube has a closed end, an open end, and a hollow armature receiving section. The open end is in fluid communication with the first passageway. A spherical armature is disposed in the armature receiving section for reciprocating movement between a closed position sealing against the circular opening to prevent communication between the passageways and an open position spaced apart from the opening permitting communication between the passageways. The winding is disposed about the flux tube for electromagnetically positioning the armature. The flux tube forms a fluid tight pressure boundary between the winding and the passageways. A spring urges the armature toward one of the open position and the closed position.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: March 27, 2007
    Assignee: Kelsey-Hayes Company
    Inventors: Herbert L. Linkner, Jr., Gamil M. Rizk
  • Patent number: 7150507
    Abstract: A self-cleaning orifice includes a housing having a bore defined therein. The bore includes a first diameter inlet portion and a second diameter outlet portion, with a seating surface defined between the inlet and outlet portions. A movable body having a seating surface with a groove defined thereon is disposed within the outlet portion of the bore. The body is movable relative to the housing to a first position in which the seating surface of the body is seated against the seating surface of the housing and provides a restricted flow between the inlet portion and the outlet portion of the bore The body is also movable relative to the housing to a second position in which the seating surface of the body is spaced apart from the seating surface of the housing creating an unrestricted fluid flow path between the inlet portion and the outlet portion of the bore.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: December 19, 2006
    Assignee: Kelsey-Hayes Company
    Inventors: Gamil M. Rizk, Leon Leventhal
  • Patent number: 7093911
    Abstract: A hydraulic braking system including first and second braking circuits. The first and second braking circuits each include a wheel brake, a pressurized fluid source, and a hydraulic conduit connecting the wheel brake to the fluid source. Each of the hydraulic conduits includes a control valve that operates to selectively prevent fluid flow from the pressurized fluid source to the wheel brake. A connecting conduit connects the first and second braking circuits. A floating piston is disposed within the connecting conduit and is adapted to be displaced by the pressurized fluid provided by the pressurized fluid source in the first braking circuit when the control valve of the first braking circuit is closed. The displacement of the piston generates an additional volume of pressurized fluid in the hydraulic conduit of the second braking circuit that effectively augments the pressurized fluid provided by the second pressurized fluid source.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: August 22, 2006
    Assignee: Kelsey-Hayes Company
    Inventors: Patrick H. Hool, Gamil M. Rizk
  • Patent number: 5299859
    Abstract: The combination solenoid valve and shuttle valve (60, 160A-D, 260A-D) comprises a shuttle valve (50, 150) which is slidingly and sealingly received at or adjacent an end of the solenoid valve (40, 140). The shuttle valve (50, 150) includes a stepped interior opening (54, 154) which sealingly receives the end of the solenoid valve (40) or a valve part (140A), such that slidable movement of the shuttle valve (50) causes an insert (55, 55A, 155) within the interior opening (54, 154) to seat sealingly over either a solenoid insert seat (41C) or insert seat (141C) of the valve part (140A) in order to isolate pressure chambers (12A, 12B; 112A, 112B; 212A, 212B) of a master cylinder/hydraulic booster (12, 112, 212A, 212B) from a wheel brake (16, 116A-D, 216A-D).
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: April 5, 1994
    Assignee: Allied-Signal Inc.
    Inventors: Wendell D. Tackett, Larry G. Lohraff, Jay A. Hendershot, Gamil M. Rizk, Thomas A Grana, George E. Brown, Timothy J. Albert
  • Patent number: 5163474
    Abstract: The combination solenoid valve and integral shuttle shuttle valve (10) comprises a solenoid valve (40) having windings (41) which actuate a rod (43) that engages a ball valve (44). An end (61) of the solenoid valve (63) includes an end filter mount (80) having a filter (77) and engaged by a shuttle valve (50). Located sealingly and slidably within the end (61) of the solenoid valve (41) is the shuttle valve (50) which is biased away from the ball valve (44) by a spring (58). The shuttle valve (50) has at least one through opening (55, 55A) which is aligned with a movable orificed washer (90) located about an extension (54) of the shuttle valve (50).
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: November 17, 1992
    Assignee: Allied-Signal Inc.
    Inventor: Gamil M. Rizk
  • Patent number: 5127712
    Abstract: The ABS pump output pulsation dampening device (59) comprises a body (10) having disposed therein a pressure source (12) communicating with an inlet line (14) that transmits pressure to an outlet line (16) via an accumulator or storage chamber (20). The body (10) receives at an open end (13) a spring (38) operated accumulator (30) having an accumulator piston (36) received within said accumulator chamber (20). One end (50) of the accumulator piston (36) includes an interior opening (32) which receives slideably and with clearance a dampening piston (60) and a resilient member (62) which biases the dampening piston (60) into engagement with a seat (15) at the end of the inlet line (14). The dampening piston (60) includes an orifice (64) at an one end (63) adjacent the seat (15) and which communicates with a passage (65) extending through the dampening piston (60).
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: July 7, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Gamil M. Rizk, Jeffrey D. Patterson
  • Patent number: 4972873
    Abstract: The shuttle valve (10) has a valve member (30) which includes first (32) and second (36) diameter sections disposed within small diameter (22), reduced diameter (24), and enlarged diameter (26) bore sections of a stepped bore (14) located in a valve body (12). The small diameter bore section (22) communicates with a brake feedback line connection (20), the reduced diameter bore section (24) communicates with an outlet opening (40), and the enlarged diameter bore section (26) communicates with an inlet opening (50). The second diameter section (36) of the valve member (30) includes a transverse opening (44) which communicates with a longitudinal orifice opening (46) that leads to a chamber (48) located at an end of the valve member (30). Seals (60, 70) are disposed about the first and second diameter sections (32, 36), and the valve member (30) biased by a spring (80) toward an at-rest position.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: November 27, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Keith H. Fulmer, Gamil M. Rizk