Patents by Inventor Kosta G. Karachristos

Kosta G. Karachristos 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).

  • Electronic push retraction exit device
    Patent number: 7883123
    Abstract: An electronic push retraction exit device includes a support rail, a push rail and a latch mechanism having a latch bolt operably connected to the push rail and movable between latched and unlatched positions. A control circuit in the exit device drives a linear actuator to retract and hold the push rail and the latch bolt in the unlatched position. The linear actuator preferably includes a stepping motor and is connected to the push rail through a lost motion connection allowing the exit device to be mechanically operated without moving the linear actuator. The control circuit preferably includes an electrical adjustment for the retraction distance of the latch bolt and an adjustable relatch timer. The exit device may be operated by a remote switch attached to a control connection, which may be permanently closed to simulate a prior art electrically operated exit device for compatibility with third party control systems.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: February 8, 2011
    Assignee: Sargent Manufacturing Company
    Inventors: Mark A. Condo, Darren C. Eller, Jon Hulse, Kosta G. Karachristos, Dale D. Martin, Brett E. Tannone
  • ELECTRONIC PUSH RETRACTION EXIT DEVICE
    Publication number: 20090127869
    Abstract: An electronic push retraction exit device includes a support rail, a push rail and a latch mechanism having a latch bolt operably connected to the push rail and movable between latched and unlatched positions. A control circuit in the exit device drives a linear actuator to retract and hold the push rail and the latch bolt in the unlatched position. The linear actuator preferably includes a stepping motor and is connected to the push rail through a lost motion connection allowing the exit device to be mechanically operated without moving the linear actuator. The control circuit preferably includes an electrical adjustment for the retraction distance of the latch bolt and an adjustable relatch timer. The exit device may be operated by a remote switch attached to a control connection, which may be permanently closed to simulate a prior art electrically operated exit device for compatibility with third party control systems.
    Type: Application
    Filed: January 28, 2009
    Publication date: May 21, 2009
    Applicant: SARGENT MANUFACTURING COMPANY
    Inventors: Mark A. Condo, Darren C. Eller, Jon Hulse, Kosta G. Karachristos, Dale D. Martin, Brett E. Tannone
  • Electronic push retraction exit device
    Patent number: 7484777
    Abstract: An electronic push retraction exit device includes a support rail, a push rail and a latch mechanism having a latch bolt operably connected to the push rail and movable between latched and unlatched positions. A control circuit in the exit device drives a linear actuator to retract and hold the push rail and the latch bolt in the unlatched position. The linear actuator preferably includes a stepping motor and is connected to the push rail through a lost motion connection allowing the exit device to be mechanically operated without moving the linear actuator. The control circuit preferably includes an electrical adjustment for the retraction distance of the latch bolt and an adjustable relatch timer. The exit device may be operated by a remote switch attached to a control connection, which may be permanently closed to simulate a prior art electrically operated exit device for compatibility with third party control systems.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: February 3, 2009
    Assignee: Sargent Manufacturing Company
    Inventors: Mark A. Condo, Darren C. Eller, Jon Hulse, Kosta G. Karachristos, Dale Martin, Brett E. Tannone
  • ELECTRONIC PUSH RETRACTION EXIT DEVICE
    Publication number: 20080012350
    Abstract: An electronic push retraction exit device includes a support rail, a push rail and a latch mechanism having a latch bolt operably connected to the push rail and movable between latched and unlatched positions. A control circuit in the exit device drives a linear actuator to retract and hold the push rail and the latch bolt in the unlatched position. The linear actuator preferably includes a stepping motor and is connected to the push rail through a lost motion connection allowing the exit device to be mechanically operated without moving the linear actuator. The control circuit preferably includes an electrical adjustment for the retraction distance of the latch bolt and an adjustable relatch timer. The exit device may be operated by a remote switch attached to a control connection, which may be permanently closed to simulate a prior art electrically operated exit device for compatibility with third party control systems.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 17, 2008
    Inventors: Mark A. Condo, Darren C. Eller, Jon Hulse, Kosta G. Karachristos, Dale D. Martin, Brett E. Tannone