Patents Assigned to Security Door Controls
  • Patent number: 10815692
    Abstract: An electric strike according to the present invention comprises a housing, and an actuator mounted to the housing to switch operation of said strike between open and locked modes. In changing the modes the actuator provides lateral motion and a blocking element is included that is also mounted to the housing and cooperates with the actuator. The actuator's lateral motion causes rotational movement in the blocking element to switch between said open and locked modes. Different embodiments of the present invention can operate as dual mode electric strikes wherein the actuator is movable between fail-safe and fail-secure positions, and can include switches and paddles to monitor the position or condition of certain mechanisms in or working with the strikes. In some embodiments the blocking element can be rotatably mounted to the housing at a plurality of rotation mounting points and can comprise a plurality of blocking surfaces.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: October 27, 2020
    Assignee: Security Door Controls
    Inventors: Arthur V. Geringer, David A. Geringer
  • Patent number: 10697202
    Abstract: An electronic cathode lock includes a base formed with an opening that is communicated with an accommodating chamber in the base. In the accommodating chamber, two retaining units are provided symmetrically at two sides of the opening, and two driving units are provided corresponding to the retaining units. The two driving units are configured to position the retaining units to overlap the opening, or make the retaining unit move away from the opening. Thereby, the electronic cathode lock limits a latch in the accommodating chamber or makes the latch get out of the accommodating chamber. Such electronic unlocking of the electronic cathode lock is configured to work with a mechanical lock, thereby electronizing the mechanical lock.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: June 30, 2020
    Assignee: Security Door Controls
    Inventors: David A. Geringer, Chen Chung Yu
  • Patent number: 10107015
    Abstract: An electric latch retraction device comprising a housing for receiving a plurality of internal components of the electric latch retraction device. An actuator mechanism is included in the housing, the actuator mechanism is adapted to impart linear movement on a latch, such that the latch is retracted towards the housing. A holding mechanism is also included in the housing, the holding mechanism holds the latch in a fully retracted position when the actuator is off. Other embodiments can comprise internal conversion mechanisms to convert the motor's linear motion to a different directional motion, with the different directional motion retracting the latch.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: October 23, 2018
    Assignee: SECURITY DOOR CONTROLS
    Inventors: Arthur V. Geringer, David A. Geringer
  • Patent number: 9797165
    Abstract: An electric latch retraction device comprising a housing for receiving a plurality of internal components of the electric latch retraction device. An actuator mechanism is included in the housing, the actuator mechanism is adapted to impart linear movement on a latch, such that the latch is retracted towards the housing. A holding mechanism is also included in the housing, the holding mechanism holds the latch in a fully retracted position.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: October 24, 2017
    Assignee: SECURITY DOOR CONTROLS
    Inventors: Arthur V. Geringer, David A. Geringer
  • Patent number: 7963574
    Abstract: An electric door lock interchangeable between fail safe and fail secure modes comprising a housing for receiving a plurality of internal components of the door lock. A window is included in the housing, the window allowing access to the internal components to change the operation of the lock between fail safe an fail secure modes.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: June 21, 2011
    Assignee: Security Door Controls
    Inventors: Arthur Geringer, David Geringer, Richard Geringer
  • Patent number: 7698918
    Abstract: One embodiment of an electric door lock according to the present invention is interchangeable between fail safe and fail secure modes and comprises a housing for receiving the internal components of the door lock. A latch bolt is mounted within the housing and is movable from partially extending from and retracted into the housing. A doorknob is mounted to the housing and is rotatable to retract the latch bolt. A solenoid assembly is also mounted within the housing and can be interchangeably arranged to cause the lock to operate a fail secure mode wherein the doorknob is prevented from retracting the latch bolt when the solenoid is not energized, or a fail safe mode wherein the doorknob is allowed to retract the latch bolt when the solenoid is not energized. The solenoid is nested in place within the housing in both modes.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: April 20, 2010
    Assignee: Security Door Controls
    Inventors: Arthur Geringer, David Geringer, Richard Geringer
  • Patent number: 7614669
    Abstract: One embodiment of an electric door lock according to the present invention is interchangeable between fail safe and fail secure modes and comprises a housing for receiving the internal components of the door lock. A latch bolt is mounted within the housing and is movable from partially extending from and retracted into the housing. A doorknob is mounted to the housing and is rotatable to retract the latch bolt. A solenoid assembly is also mounted within the housing and can be interchangeably arranged to cause the lock to operate a fail secure mode wherein the doorknob is prevented from retracting the latch bolt when the solenoid is not energized, or a fail safe mode wherein the doorknob is allowed to retract the latch bolt when the solenoid is not energized. The solenoid is nested in place within the housing in both modes.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: November 10, 2009
    Assignee: Security Door Controls
    Inventors: Arthur Geringer, David Geringer, Richard Geringer
  • Patent number: 7540542
    Abstract: An electric strike comprising a housing and a keeper pivotally mounted to said housing. A solenoid is arranged internal to the housing and movable between fail-safe and fail-secure positions. A two position mode control slot is included in the housing and a mode control screw is included in the mode control slot. The screw is capable of being tightened in each of the two positions in the control slot. The screw is changeable between the two of the positions without removal of the screw. The solenoid is in the fail-safe position when the screw is in one of the two positions and in the fail-secure position when the screw is in the other of the two positions.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: June 2, 2009
    Assignee: Security Door Controls
    Inventors: Arthur V. Geringer, David A. Geringer, Richard Geringer
  • Patent number: 7246827
    Abstract: An electric door lock interchangeable between fail safe and fail secure modes comprising a housing for receiving a plurality of internal components of the door lock. A window is included in the housing, the window allowing access to the internal components to change the operation of the lock between fail safe an fail secure modes.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: July 24, 2007
    Assignee: Security Door Controls
    Inventors: Arthur Geringer, David Geringer, Richard Geringer
  • Publication number: 20040189018
    Abstract: A push bar locking mechanism for locking and unlocking a door also comprising a push bar arranged integral to a bar frame such that the push bar can be moved relative to the bar frame. An elongated link is integral to the push bar and bar frame and is movable in response to the push bar movement relative to the bar frame. The movement of the elongated link causes a door locking mechanism to move between a locked and unlocked position. An electromagnetic locking mechanism is included that can be changed between an energized and de-energized state by an electrical signal, wherein the electrical locking mechanism generates a magnetic field when energized. An armature is also included in proximity to the electromagnetic locking mechanism and the elongated link. The armature prevents movement of the elongated link when the electromagnetic locking mechanism is energized.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 30, 2004
    Applicant: SECURITY DOOR CONTROLS
    Inventors: Arthur Geringer, David Geringer, Richard Geringer
  • Patent number: 6681607
    Abstract: A lock with sensor comprises a housing defining a chamber and a latch mechanism located within the chamber of the housing. The latch mechanism is movable relative to the housing between a retracted position wherein the latch mechanism is substantially within the housing and an extended position wherein the latch mechanism extends at least partially outside of the housing. A sensor mechanism is provided and has a fixed switch portion located within the chamber and a movable switch activator portion, the switch activator portion being mounted so as to move with the latch mechanism and thereby activate and deactivate the switch portion respectively.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: January 27, 2004
    Assignee: Security Door Controls, Inc.
    Inventor: Arthur Geringer