Patents by Inventor Ramzi A. Khalifa

Ramzi A. Khalifa 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: 4858409
    Abstract: The assembly of the present invention includes a support member having a panel support portion for supporting the ceiling panel along its length. The support member also includes a wall fixation portion for affixing the support member to a wall. The assembly also includes a retaining member for retaining one ceiling panel in the assembly, the retaining member having an attachment member engageable with the support member and a clamping portion extending from the attachment member for restraining the ceiling panel in the assembly when the pivot member is fully engaged with the support member. A closure member is disposable between adjacent ceiling panels and is engageable with the support member and the retaining member so as to close the assembly and lock the clamping portion of the retaining member against the ceiling panel.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: August 22, 1989
    Assignee: Industral Acoustics Company, Inc.
    Inventors: John M. Handley, Ramzi A. Khalifa
  • Patent number: 4061371
    Abstract: A self-locking device for locking a movable member to a stationary member including a rotatable latch member mounted on the stationary member and having a pair of ears located on opposite sides of its axis of rotation, the movable member having a pair of heels cooperations with the ears of the latch member in such a way that longitudinal movement of the movable member relative to the stationary member and toward the closed position causes one of the heels to engage one of the ears on the latch member thereby rotating the latch member until the other ear engages the other heel to latch the movable member in the closed position, the face on the other ear and the face on the other heel being angularly positioned with respect to the axis of rotation of the latch member such that movement of the other heel toward the open position will not impart any substantial rotary movement to the latch member to cause it to rotate to an unlatched position, thereby preventing movement of the movable member in the opening direc
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: December 6, 1977
    Assignee: Edson Tool & Manufacturing Company, Inc.
    Inventors: Joseph E. Prather, Ramzi A. Khalifa
  • Patent number: 4058334
    Abstract: An improved self-locking device for locking a movable structural member to a stationary structural member, or to another movable structural member, or for unlocking the same, comprising a rotatable self-locking cam and an actuating means therefor; the rotatable self-locking cam being rotatably mounted on a first structural member and having (1) an arcuate surface thereon, capable of preventing movement of a movable structural member in a first or opening direction, and (2) a cam surface thereon, capable of moving the movable structural member in the first or opening direction; and the actuating means being capable of rotating the self-locking cam in an angular direction whereby the cam surface contacts an ear on the movable structural member to forcibly move it in the first or opening direction, while the arcuate surface is being simultaneously moved out of the way of the movable structural member, due to the angular rotation of the self-locking cam, to permit the movement of the movable structural member in
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: November 15, 1977
    Assignee: Edson Tool and Manufacturing Company, Inc.
    Inventors: Joseph E. Prather, Ramzi A. Khalifa
  • Patent number: 4029348
    Abstract: An improved self-locking device for locking a movable structural member to a stationary structural member, or to another movable structural member, or for unlocking the same, comprising a rotatable self-locking cam and an actuating means therefor; the rotatable self-locking cam being rotatably mounted on a first structural member and having (1) an arcuate surface thereon, capable of preventing movement of a movable structural member in a first or opening direction, and (2) a cam surface thereon, capable of moving the movable structural member in the first or opening direction; and the actuating means being capable of rotating the self-locking cam in an angular direction whereby the cam surface contacts an ear on the movable structural member to forcibly move it in the first or opening direction, while the arcuate surface is being simultaneously moved out of the way of the movable structural member, due to the angular rotation of the self-locking cam, to permit the movement of the movable structural member in
    Type: Grant
    Filed: April 13, 1976
    Date of Patent: June 14, 1977
    Assignee: Edson Tool and Manufacturing Company, Inc.
    Inventors: Joseph E. Prather, Ramzi A. Khalifa